Understand flight control.
Choose sensors with purpose.

Baumer

OADM 20I6480/S14F (10144601)

Very precise local distance, preferably on a test rig or in controlled lighting

High geometric precision around 50 cm, but little ambient-light headroom for sunlight.

Assessment at 50 cm sensor distance: 50 cm is nominally a very good fit; the linearity deviation of up to ±2 mm alone does not establish outdoor flight accuracy. This variant provides no specified distance value above 600 mm.

IntegrationHigh

Regulated 24 V supply, precise analogue input and a custom measurement bridge; scale the output window to the working range and detect out-of-range readings.

Operating range / quantity

100–600 mm

Error / dispersion

Linearity error ±0.05–2 mm; resolution 15–670 µm. This does not establish an identical total absolute error.

Interface

4–20 mA and 0–10 V; PNP alarm; M12, 8-pin

Baumer

UNDK 30U6103/S14 (10125521)

Rectangular ultrasound with analogue output

Alternative form factor for a fixed bench setup; account for its long warm-up period.

Assessment at 50 cm sensor distance: 450–550 mm is within the manufacturer range. The 0.5 mm repeatability is not a total error bound; 2% temperature drift calculates to 10 mm at 500 mm. Account for warm-up and older conflicting datasheet revisions.

IntegrationHigh

Requires regulated 24 V, a 0–10 V to 3.3 V measurement adapter/ADC and a rangefinder bridge. Measure scaling, warm-up drift and actual response on the assembly.

Operating range / quantity

100–1000 mm; 100 mm blind zone in manufacturer documentation

Error / dispersion

Repeatability ≤0.5 mm, resolution <0.3 mm; temperature drift ≤2% of target distance. Equivalent overall accuracy is not verified.

Interface

0–10 V / 10–0 V, M12; teach-in

DFRobot

A01NYUB (SEN0313)

Enclosed ultrasonic sensor with longer range

Affordable longer-range comparison; account for the horn and nearby edges in the test setup.

Assessment at 50 cm sensor distance: 450–550 mm is within nominal range, with the lower target limit only 170 mm beyond the blind zone. The advertised 7.5 m requires the horn; ±10 mm remains a sensor specification under manufacturer conditions.

IntegrationMedium

Use 3.3 V operation or verified level conversion and a UART bridge; pass data age and invalid-echo status to the flight controller. Calibrate the sensor-to-nozzle offset.

Operating range / quantity

280–7500 mm for a flat target with the horn fitted; 280 mm blind zone

Error / dispersion

Manufacturer: ±10 mm; 1 mm resolution specified separately

Interface

UART, 9600 baud

DFRobot

A02YYUW (SEN0311)

Low-cost enclosed near-range test

Affordable candidate for dry and wet glass experiments; account for its broad beam.

Assessment at 50 cm sensor distance: 450–550 mm is well beyond the 30 mm blind zone. The specified ±10 mm leaves theoretical margin under manufacturer conditions, but does not prove ±5 cm nozzle control during spray flight.

IntegrationMedium

Use a 3.3 V supply or suitable signal-level conversion; read UART data through a verified rangefinder driver or custom bridge. No native MAVLink/CAN output.

Operating range / quantity

30–4500 mm; 30 mm blind zone

Error / dispersion

Manufacturer: ±10 mm; 1 mm resolution is a separate specification

Interface

UART, 9600 baud

DFRobot

Gravity URM09 I²C (SEN0304)

Fast low-cost laboratory ultrasound

Very inexpensive dry bench platform for measurement timing and software; added covers may alter acoustics.

Assessment at 50 cm sensor distance: 450–550 mm is within range. The advertised 1% and 10 mm output steps do not establish absolute ±5 mm accuracy at 500 mm; treat this as a laboratory candidate.

IntegrationMedium

Keep I²C wires short and match pull-ups to the flight controller’s 3.3 V logic; verify a driver for the exact firmware version or build a bridge. Do not confuse it with the SEN0307 analogue variant.

Operating range / quantity

20–5000 mm; selectable 1.5/3/5 m ranges

Error / dispersion

Manufacturer lists 1% accuracy and 10 mm resolution; the shop does not explain the percentage reference

Interface

I²C / Gravity, SKU SEN0304; not the analogue version

DFRobot

URM14

Close distance / glass test

Initial test-rig candidate for local distance, particularly on glass.

Assessment at 50 cm sensor distance: 450–550 mm lies within the nominal range. First resolve conflicting manufacturer specifications (shop ±0.3%, wiki ±0.1%) and test rotor airflow, spray water and angled glass on a rig.

IntegrationMedium

Allow for an RS485 transceiver or bridge, Modbus decoding and a rangefinder data path checked against the specific firmware version.

Operating range / quantity

0.10–1.50 m

Error / dispersion

Shop: ±0.3% measurement error; wiki instead states ±0.1%. Clarification required.

Interface

RS485 / Modbus RTU

Leuze electronic

ODSL 30/D232.01-30M-S12 (50147335)

Precision reference; weight unfavourable for small drones

Well documented measurement reference; calculate payload and size before flight use.

Assessment at 50 cm sensor distance: 450–550 mm lies within range. Static ±2/±5 mm looks promising; high weight, referencing, motion lag and glass backscatter may nevertheless rule out drone use.

IntegrationHigh

24 V DC/DC supply, RS232 level converter and protocol adapter to the flight controller; RS232 is not TTL UART.

Operating range / quantity

0.20–30 m at 6–90% diffuse reflectance; up to 65 m at 90%

Error / dispersion

±2 mm at 90% or ±5 mm at 6% diffuse reflectance; observe referencing requirements. Resolution 1 mm; repeatability 2 mm (3σ).

Interface

RS232; two push-pull switching outputs; M12, 8-pin

LightWare

LW20/HA

Outdoor optical cross-check

Enclosed optical test candidate; US$30 more than the SF20/HA.

Assessment at 50 cm sensor distance: 50 cm is within range; the HA accuracy below 1 cm applies at 20–30 °C. Temperature dependence, glass and sensor geometry can substantially reduce headroom.

IntegrationLow

Use UART/I²C with a verified autopilot driver; measurement direction, mounting and sensor validity must match the controller.

Operating range / quantity

0.20–100 m

Error / dispersion

<1 cm at 20–30 °C; <2 cm at 15–20 / 30–35 °C; <5 cm at 0–15 / 35–50 °C; <10 cm at −20–0 / 50–60 °C.

Interface

UART / I²C

LightWare

SF20/HA

Precise optical cross-check

Lightweight optical cross-check sensor for suitable, non-transparent surfaces.

Assessment at 50 cm sensor distance: 50 cm can be measured. Below 1 cm is only specified at 20–30 °C; at 0–15 °C it is already below 5 cm. Test glass, spray water and dynamic flight errors separately.

IntegrationLow

UART/I²C and manufacturer autopilot guidance simplify the data path. Protection, mounting orientation and parameter settings remain project specific.

Operating range / quantity

0.20–100 m

Error / dispersion

<1 cm at 20–30 °C; <2 cm at 15–20 / 30–35 °C; <5 cm at 0–15 / 35–50 °C; <10 cm at −20–0 / 50–60 °C.

Interface

USB / UART / I²C

MaxBotix

MB1242 I2CXL-MaxSonar-EZ4

Compact I²C ultrasound for large targets

Software/laboratory comparison for larger flat targets; water protection requires separate development.

Assessment at 50 cm sensor distance: 450–550 mm is above the 200 mm minimum distance. A 1 cm output step does not establish ±1 cm accuracy; measure temperature and target-size effects on the bench.

IntegrationMedium

Use I²C pull-ups compatible with 3.3 V, short wiring and an appropriate firmware driver/bridge. The sensor may NACK while measuring; handle measurement age correctly.

Operating range / quantity

200–7650 mm; reports the nearest detectable target

Error / dispersion

1 cm resolution; no verified general absolute error bound. Target size can bias the result.

Interface

I²C; configurable address

MaxBotix

MB7066-100 XL-MaxSonar-WRL1

Weather-resistant 10 m ultrasonic comparison

Affordable outdoor comparison with ample range; account for absent temperature compensation and its signal format.

Assessment at 50 cm sensor distance: 450–550 mm is outside the MB7066-100 minimum distance of 200 mm. The family datasheet does not establish general ±1 cm absolute accuracy; do not transfer another MaxBotix model’s 500 mm limit to this SKU.

IntegrationMedium

Order the exact full-horn -100 configuration. A UART input needs appropriate inversion and 3.3 V level conversion; pulse-width or ADC input is an alternative. Verify temperature correction and the rangefinder bridge.

Operating range / quantity

200–10,680 mm in the full-horn housing; target-dependent

Error / dispersion

1 cm serial increments, 2 cm analogue steps; no verified absolute error bound for flight

Interface

Pulse width, analogue voltage, inverted RS232 data format at 0–Vcc levels

MaxBotix

MB7389-100 HRXL-MaxSonar-WRMT

Affordable supplementary sensor; limited suitability for 45–55 cm

Simple, low-power supplementary measurement; preferably use a sensor distance above 50 cm.

Assessment at 50 cm sensor distance: The 450–550 mm target band goes below the manufacturer recommendation of 500 mm for highest reliability. Therefore not a first choice as the sole control sensor; consider moving the sensor so its measurement path always remains >500 mm.

IntegrationMedium

Filtered 5 V supply, suitable TTL levels and firmware bridge; do not connect a 5 V output to a 3.3 V input without checking compatibility. Calibrate sensor origin relative to nozzle.

Operating range / quantity

300–5000 mm; below 300 mm typically outputs 300 mm

Error / dispersion

Typically ±1% or better according to series datasheet; serial resolution 1 mm, analogue resolution 5 mm. Housing and near field affect errors.

Interface

TTL serial 9600 baud, pulse width and analogue voltage

Pepperl+Fuchs

UC1000-18GS-IUEP-IO-V15 (304928-100003)

Compact M18 ultrasound with IO-Link diagnostics

Compact candidate with digital diagnostics and a shorter documented response.

Assessment at 50 cm sensor distance: 450–550 mm is within nominal range. ±1% of 1 m means ±10 mm characteristic deviation; also account for the separate temperature influence. The datasheet specifies two minutes of warm-up with enhanced compensation.

IntegrationHigh

Use a 24 V DC/DC converter and IO-Link master with a companion bridge, or a safely scaled ADC. Do not equate a 3 ms IO-Link cycle with the acoustic response delay.

Operating range / quantity

70–1000 mm; adjustable evaluation range 90–1000 mm

Error / dispersion

Characteristic deviation ≤±1% of full scale; repeatability ≤±0.1% of full scale; temperature influence ≤±0.75% of full scale after warm-up

Interface

IO-Link 1.1 COM2, 4–20 mA/0–10 V, push-pull, synchronization; 5-pin M12

Pepperl+Fuchs

UC2000-30GM-IUEP-IO-V15-Y (70137787)

Test direct close-range distance, including transparent surfaces

Lightweight industrial ultrasonic sensor with sufficient close range; interesting URM14 alternative.

Assessment at 50 cm sensor distance: 450–550 mm is well outside the blind zone. At 2 m full scale, 0.2% calculates to 4 mm, but 1.5% temperature influence is 30 mm; this is not a universal ±4 mm total accuracy.

IntegrationHigh

Regulated 24 V plus IO-Link master or current/voltage ADC and a custom rangefinder bridge; output cycle is not equivalent to measurement response.

Operating range / quantity

90–2000 mm; adjustable evaluation range from 120 mm

Error / dispersion

Characteristic deviation ≤0.2% of full scale; repeatability ≤0.1% of full scale; temperature influence up to 1.5% of full scale. Resolution ≥0.35 mm.

Interface

IO-Link 1.0, 4–20 mA or 0–10 V, synchronisation; M12, 5-pin

Pololu / STMicroelectronics

VL53L1X Carrier · Pololu 3415

Affordable 50 cm laboratory test with adjustable field of view

Affordable rig for matt surfaces and shading; not a ready-to-use outdoor sensor.

Assessment at 50 cm sensor distance: 50 cm is generally within range; typical ±20–25 mm mathematically leaves some headroom. A laboratory candidate only: allowance for offset, angle, latency, flight motion and outdoor conditions remains unproven.

IntegrationHigh

Develop custom firmware, timing budget, offset/crosstalk calibration and cover window; do not assume a ready-made flight-controller driver.

Operating range / quantity

0.04–4 m in favourable dark conditions; Short mode typically up to 1.3 m with higher ambient-light immunity.

Error / dispersion

ST datasheet: typically ±20 mm in darkness and ±25 mm in the defined ambient-light tests; depends on mode, timing budget and target.

Interface

I²C; XSHUT and interrupt

Pololu / STMicroelectronics

VL53L4CD Carrier · Pololu 3692

Short-range laboratory test at 50 cm

Very affordable close-range experiment on dry, matt reference surfaces; test outdoor capability first.

Assessment at 50 cm sensor distance: At 50 cm on a white target, calculated typical error is ±15 mm indoors and about ±40 mm outdoors overcast. Grey 17% targets at 50 cm already exceed the typical range at 90% valid readings. Nozzle control within ±5 cm remains unproven.

IntegrationHigh

Design a custom enclosure, temperature/offset calibration, measurement-status handling and timing budget; not a ready-made drone distance controller.

Operating range / quantity

1 mm–1.2 m under favourable conditions; valid range can fall below 50 cm in overcast outdoor light with a dark target.

Error / dispersion

ST at 33 ms and >200 mm: indoors typically ±3% (white) / ±4% (grey); outdoors overcast typically ±8%. At least 90% of readings within the stated limits.

Interface

I²C; XSHUT and interrupt

SICK

DT35-B15251 (1057652)

Direct facade distance; lightweight industrial laser

Interesting rig candidate for 50 cm on diffusely reflecting surfaces.

Assessment at 50 cm sensor distance: 450–550 mm lies within range. Typically ±10 mm does not guarantee ±5 cm nozzle guidance: incidence angle, mounting offset, flight motion and latency add further errors.

IntegrationHigh

Regulated 24 V supply plus analogue ADC or IO-Link master and rangefinder bridge; not a direct TTL UART device.

Operating range / quantity

0.05–12 m at 90% remission and Speed=Slow; up to 3.1 m at 6%

Error / dispersion

Typically ±10 mm; resolution 0.1 mm. Repeatability is separate and depends on speed.

Interface

IO-Link 1.1, 4–20 mA or 0–10 V; M12, 5-pin

SICK

UM18-218126111 (6048404)

Lightweight M18 industrial sensor for 50 cm

A useful lightweight industrial comparison with URM14 and pico+100/I.

Assessment at 50 cm sensor distance: 450–550 mm is within operating range. ±1% calculates to ±5 mm at 500 mm under manufacturer conditions; this does not prove dynamic ±5 cm performance in wind and spray.

IntegrationHigh

Provide regulated 24 V, a current receiver/ADC with a 3.3 V-safe output, and a rangefinder bridge. Measure filtering, timestamps and multiplex rate for the complete control loop.

Operating range / quantity

120–1000 mm operating range; 1300 mm limiting range

Error / dispersion

±1% of current measured distance, ±0.15% repeatability; resolution ≥0.069 mm

Interface

4–20 mA, 5-pin M12; synchronization/multiplexing

SICK

UM30-213113 (6036918)

Direct distance measurement with a clear error reference

Industrial alternative with documented measurement accuracy; relatively expensive.

Assessment at 50 cm sensor distance: At 500 mm, ±1% calculates to ±5 mm under manufacturer conditions. 450–550 mm lies within the operating range; dynamic nozzle guidance within ±5 cm requires separate verification.

IntegrationHigh

Allow for regulated 24 V and an analogue ADC with MAVLink/rangefinder bridge; account for filters and timestamps in flight testing.

Operating range / quantity

200–1300 mm operating range; limiting range 2000 mm

Error / dispersion

±1% of the current measured value; repeatability ±0.15%; resolution ≥0.18 mm

Interface

4–20 mA or 0–10 V, synchronisation/multiplexing; M12, 5-pin

ifm electronic

O1D100 / O1DLF3KG/IO-LINK

Direct distance with documented light/colour errors

Well documented industrial comparison for diffuse facades, with higher weight.

Assessment at 50 cm sensor distance: 50 cm falls within the error specifications for 200–1000 mm. ±15–26.5 mm leaves static allowance relative to the ±50 mm goal; total flight error and measurement dropouts are not established by this.

IntegrationHigh

24 V DC/DC, 4–20 mA input or IO-Link master and bridge required; transfer readings to the flight controller with timestamps and validity checks.

Operating range / quantity

0.20–10 m on white reference target; black up to 4 m

Error / dispersion

At 0.2–1 m/50 Hz: ±15 mm white or ±18 mm grey below 40 klx; ±26.5 mm at 40–100 klx. This is not repeatability.

Interface

IO-Link 1.1, 4–20 mA/0–10 V, PNP; M12

microsonic

lpc+100/CFI (36310)

Lightweight IO-Link ultrasound with analogue option

Compact industrial comparison with a digital distance value rather than only a switching signal.

Assessment at 50 cm sensor distance: 450–550 mm falls within operating range and above the 120 mm blind zone. Temperature-compensated accuracy does not establish performance in rotor airflow and spray.

IntegrationHigh

Use regulated 24 V plus an IO-Link master and companion bridge, or a 4–20 mA ADC. Decode process-data scaling and error states according to the IODD; never connect 24 V directly to the Cube.

Operating range / quantity

120–1000 mm operating range; 1300 mm limiting range

Error / dispersion

±1% with internal temperature compensation; ±0.15% repeatability

Interface

IO-Link COM2 distance data, 4–20 mA, push-pull; synchronization/multiplexing; 5-pin M12

microsonic

mic+130/IU/TC (22 320)

Precise ultrasonic comparison on a facade test rig

Useful industrial candidate with range allowance below and above 50 cm.

Assessment at 50 cm sensor distance: 450–550 mm lies within the operating range and outside the 200 mm blind zone. Distinguish ±1% from resolution and repeatability; no proof of ±5 cm in flight with the nozzle running.

IntegrationHigh

Regulated 24 V rail, current/voltage input and bridge to the flight controller; synchronise multiple sensors rather than transmitting without coordination.

Operating range / quantity

200–1300 mm operating range; limiting range 2000 mm

Error / dispersion

±1% with internal temperature compensation; repeatability ±0.15%; resolution 0.18–0.57 mm depending on analogue window

Interface

4–20 mA/0–10 V; synchronisation/multiplexing; M12, 5-pin

microsonic

pico+100/I

Lightweight direct close-range distance; glass test-rig candidate

Especially interesting weight comparison with URM14; select the exact straight-head variant.

Assessment at 50 cm sensor distance: 450–550 mm lies well within the operating range. ±1% remains a sensor specification under measurement conditions; verify the entire nozzle distance band with motion, spray water and signal dropouts.

IntegrationHigh

24 V DC/DC and 4–20 mA receiver/ADC plus rangefinder bridge required. Retailer short description incorrectly mentions an angled head; manufacturer distinguishes the separate /WK/I variant.

Operating range / quantity

120–1000 mm operating range; limiting range 1300 mm

Error / dispersion

±1% with temperature compensation; repeatability ±0.15%; resolution 0.069–0.38 mm depending on analogue window

Interface

4–20 mA; teach-in/synchronisation through Com input; M12, 5-pin

microsonic

zws-70/CI/QS

Very lightweight industrial ultrasound for 50 cm

A useful lightweight bench candidate when a 24 V analogue interface is already available.

Assessment at 50 cm sensor distance: 450–550 mm is well beyond the 120 mm blind zone and within operating range. The ±1% sensor specification and 0.20 mm resolution do not establish guaranteed flight accuracy.

IntegrationHigh

Provide a 24 V DC/DC converter, 4–20 mA receiver and 3.3 V-safe ADC/rangefinder bridge; deliberately schedule external synchronization for multiple heads.

Operating range / quantity

120–700 mm operating range; 1000 mm limiting range

Error / dispersion

±1% with internal temperature compensation; ±0.15% repeatability, 0.20 mm resolution

Interface

4–20 mA, 4-pin M8; external synchronization

Benewake

TF-Luna · 8 m (DFRobot SEN0340)

Affordable single-point distance for the test rig

Very affordable comparison sensor for diffuse facade surfaces; mount with protection.

Assessment at 50 cm sensor distance: 50 cm lies within range, but ±6 cm at 50 cm does not meet ±5 cm nozzle distance. Sensor offset, tilt, latency and flight motion add further errors.

IntegrationMedium

Check firmware mode, supply, measurement status and mounting offset; protective housing required.

Operating range / quantity

0.20–8 m at 90% reflectance; only up to 2.5 m at 10% reflectance (indoors).

Error / dispersion

±6 cm at 0.2–3 m; ±2% at 3–8 m. 1 cm resolution is not an accuracy specification.

Interface

UART, I²C, I/O; 3.3 V logic

Benewake

TF02-Pro · UART/I²C (DFRobot SEN0238)

Enclosed budget distance and ground-height sensor

Affordable comparison for height measurement and local distance on well-reflecting surfaces.

Assessment at 50 cm sensor distance: 50 cm is within nominal range, but ±5 cm already consumes the entire target budget. A mounting offset increasing sensor distance does not change this near-range limitation.

IntegrationMedium

Check suitable UART/I²C driver, reading age, outlier handling and sensor-to-nozzle transformation.

Operating range / quantity

0.10–40 m at 90% reflectance; 0.10–13.5 m at 10%, including 100 klux.

Error / dispersion

±5 cm at 0.1–5 m; ±1% at 5–40 m; reference: white surface, 25 °C.

Interface

UART, I²C, I/O; 3.3 V logic

Benewake

TF02-i · RS-485 (DFRobot SEN0504)

Direct distance with more robust fieldbus cabling

Candidate for longer, interference-prone wiring between sensor head and measurement computer.

Assessment at 50 cm sensor distance: At 50 cm, nominal error is already ±5 cm. Offset, angle, latency and flight motion require additional allowance; no assurance of 50 cm ±5 cm.

IntegrationHigh

RS-485 is not automatically DroneCAN. Check adapter, termination and exact protocol.

Operating range / quantity

0.10–40 m at 90% reflectance; up to 13.5 m at 10%, including 100 klux.

Error / dispersion

Manufacturer A03: ±5 cm at 0.1–5 m; ±1% at 5–25 m. No accuracy promise for 25–40 m in that document.

Interface

Offered SEN0504 version: RS-485; CAN is a separately orderable version.

Benewake

TF03-100 Standard UART/CAN

Directional distance measurement / supplementary ground or wall measurement

Robust single-point sensor for longer distances; datasheet accuracy does not fit a stand-alone ±5 cm close-range requirement.

Assessment at 50 cm sensor distance: At 50 cm, ±10 cm applies according to A01 datasheet. Insufficient for the ±5 cm total goal without an additional, more precise measurement channel.

IntegrationMedium

Confirm hardware revision and interface in writing; evaluate signal strength, dropouts and filter delay.

Operating range / quantity

0.1–100 m at 90% reflectance; 40 m at 10%; at 100 klux 80 m and 30 m respectively according to A01

Error / dispersion

±10 cm below 10 m; ±1% from 10 m; 1 cm resolution is not accuracy

Interface

Standard UART/CAN; RS232/RS485 are other hardware variants

Benewake

TFS20-L · 20 m OEM module (DFRobot SEN0672)

Extremely lightweight distance module for custom integration

Interesting for low weight and multiple measurement directions when electronics and weather protection are developed in-house.

Assessment at 50 cm sensor distance: 50 cm lies within range; ±6 cm absolute accuracy exceeds the total goal. 2 cm repeatability does not replace absolute error and does not establish flight-control performance.

IntegrationHigh

Design housing, cable strain relief, supply headroom and protocol integration.

Operating range / quantity

0.20–20 m at 90% reflectance in darkness; 15 m at 100 klux. Dark target: 12 m indoors / 9 m at 100 klux.

Error / dispersion

±6 cm at 0.2–6 m; ±1% from 6 m. Repeatability 2 cm (1σ) is separate.

Interface

UART or I²C; 3.3 V logic

Benewake

TFmini Plus

Learning / approximate distance

Affordable for driver development and initial distance experiments.

Assessment at 50 cm sensor distance: 50 cm lies within range, but ±5 cm sensor error consumes the entire permissible nozzle deviation. No allowance remains when used as the sole control sensor for this goal.

IntegrationLow

Check support, interface and parameters of the specific ArduPilot/PX4 firmware; connecting the sensor alone does not create distance control.

Operating range / quantity

0.10–12 m; dark targets up to 4 m

Error / dispersion

±5 cm at 0.1–5 m; ±1% at 5–12 m according to A07 datasheet.

Interface

UART / I²C, depending on variant

Garmin

LIDAR-Lite v4 LED · 010-02022-00

Lightweight close-range distance with documented repeatability

Rig candidate for a lightweight 50 cm channel; separate absolute calibration required.

Assessment at 50 cm sensor distance: 50 cm lies within range and ±1 cm repeatability sounds promising. Absolute accuracy, sunlight, wet glass, offset and latency still lack complete verification for ±5 cm.

IntegrationMedium

Prefer testing wired I²C; evaluate status: an invalid return may be output as 1 cm.

Operating range / quantity

0.05–10 m; reference point according to retailer: rear of the device.

Error / dispersion

Repeatability in High Accuracy mode indoors on a 90% target: ±1 cm up to 2 m, ±2 cm up to 4 m, ±5 cm up to 10 m (1σ). No general absolute-error guarantee.

Interface

I²C or ANT; SPI only through a custom application

LightWare

LW20/C · 100 m (standard, not HA)

Sealed distance and height channel

Compact weather-protected alternative for a second measurement channel; lower close-range accuracy than LW20/HA.

Assessment at 50 cm sensor distance: At 50 cm, ±5 cm at low rate consumes the entire target budget; high rate is specified at ±10 cm. Not verified for ±5 cm total nozzle standoff.

IntegrationMedium

Test a fixed channel first; use a servo only with separate angle/time calibration. IP67 does not establish chemical/high-pressure resistance.

Operating range / quantity

0.20–100 m; 70% albedo in sunlight, 0.9 × 0.9 m target.

Error / dispersion

±5 cm below 500 readings/s; ±10 cm above 500/s. Do not apply HA accuracy.

Interface

UART, I²C, servo driver; 3.3 V TTL, 5 V tolerant

LightWare

SF000/B · 50 m

Lightweight single-point distance and height channel

Very light additional distance channel with a narrow beam; protect the rear during integration.

Assessment at 50 cm sensor distance: 50 cm can be measured, but ±5 cm sensor error leaves no allowance. Calibrate nozzle mounting offset and time delay on the complete system.

IntegrationMedium

Custom sealing and heat dissipation; check UART/I²C or a separate DroneCAN adapter.

Operating range / quantity

0.20–50 m; 70% albedo in sunlight, 0.9 × 0.9 m target.

Error / dispersion

±5 cm according to product guide 7.3; 1 cm resolution.

Interface

UART and I²C, 3.3 V TTL and 5 V tolerant

Ainstein

US-D1 Radar Altimeter

Ground distance / AGL height; no facade odometry

Candidate for redundant ground height during takeoff/landing; not recommended for frontal glass-distance protection.

Assessment at 50 cm sensor distance: 50 cm is the lower measurement limit. The 450–550 mm target band intersects the blind zone; precision is also 6 cm below 1 m. Classify as an altimeter, not a precise facade-control sensor.

IntegrationMedium

Point downward; evaluate SNR and invalid values, check installation and firmware variant.

Operating range / quantity

0.5–50 m; blind zone below 0.5 m

Error / dispersion

Manufacturer precision 6 cm below 1 m, 4 cm above 1 m; no demonstrated control accuracy

Interface

UART or CAN, observe ordered variant

LightWare

SF30/D · 200 m

Long-range height and obstacle channel

Supplementary height channel or narrow beam for longer distances; oversized for close-range precision.

Assessment at 50 cm sensor distance: 50 cm lies within range; ±5 cm at low or ±10 cm at high rate is insufficient as overall verification of 50 cm ±5 cm. Primarily classify as a height/backup channel.

IntegrationMedium

Check supported UAV-controller mode; slow filters increase delay, and 20 kHz is not a promised control-loop rate.

Operating range / quantity

0.20–200 m; 70% albedo in sunlight, 10 km visibility, 0.9 × 0.9 m target.

Error / dispersion

±5 cm below 500 readings/s; ±10 cm above 500 readings/s. The boundary at exactly 500/s is unclear in the guide.

Interface

UART, I²C; USB for configuration

Hokuyo

UST-20LX

Fast Ethernet contour scan for local maps and localisation.

Lightweight industrial scanner for robust contour data; direct sunlight and wet optics remain limitations.

Mapping pipeline: 270° contour in one plane. SLAM and motion create larger 2D maps; 3D requires measured motion/orientation. Not a complete flight system.

IntegrationMedium

Ethernet computer, 10–30 V supply, mounting/time calibration and external SLAM/pose processing.

Operating range / quantity

0.06–20 m on white Kent paper; up to 8 m at 10% reflectivity; 60 m is only the maximum detection distance

Error / dispersion

±40 mm; repeatability σ<30 mm under manufacturer test conditions

Interface

Ethernet 100BASE-TX; synchronisation output

LDROBOT

STL-27L – Waveshare Kit 24782

Budget option for lightweight 360° contour scans and mapping prototypes.

Very light for dry bench/flight prototypes; wet cleaning conditions require a suitable solution.

Mapping pipeline: Planar distance scan. Continuous 2D maps require SLAM and motion; 3D additionally requires known scan-plane orientation/motion. Not a complete navigation system.

IntegrationMedium

Add UART driver, computer/logger, power supply and calibrated time/pose reference; the ESP8266 adapter is not a SLAM computer.

Operating range / quantity

0.03–25 m at about 80% reflectivity

Error / dispersion

Mean error: ±15 mm up to 2 m; ±20 mm at 2–8 m; ±30 mm beyond

Interface

UART 921,600 bit/s; kit with ESP8266 adapter and USB TTL

LightWare

SF45/B (50 m)

Horizontal surroundings and sector measurements for obstacle distance

Lightweight 2D surroundings sensing to supplement local frontal distance.

Mapping pipeline: Planar scan: a continuous 2D map requires motion and poses/SLAM; a spatial map additionally requires known scan-plane motion and orientation.

IntegrationMedium

Configure scan sector, masks for aircraft components and filter latency; size supply for startup.

Operating range / quantity

0.2–50 m; maximum range specified with a 70% reflective target

Error / dispersion

±5 cm below 500 readings/s; ±10 cm above 500 readings/s according to product guide Rev. 3.1

Interface

UART, I²C; USB for setup/configuration

SICK

TiM571-2050101 (1075091)

Weather-protected 270° distance scanner for contour maps and localisation.

Robust industrial candidate for local contours; weigh mass and 15 Hz rate against lighter alternatives.

Mapping pipeline: Provides a planar 270° scan. Contour maps result from registration using SLAM/poses. Spatial maps require motion and known scan-plane orientation.

IntegrationMedium

Add Ethernet computer and processing; USB service port does not replace the measurement data path. SLAM requires poses/IMU.

Operating range / quantity

0.05–25 m; 8 m at 10% remission

Error / dispersion

Systematic ±60 mm; statistical <20 mm typical (90% target)

Interface

Ethernet TCP/IP; Micro-USB for service/parameter configuration; PNP synchronisation output

SLAMTEC

RPLIDAR A3 (A3M1)

Established 360° scanner for 2D SLAM and geometric development experiments.

Useful for dry, controlled mapping experiments; less suitable for wet facade work.

Mapping pipeline: Planar contour map after registering multiple scans with estimated poses. Spatial reconstruction requires controlled scan-plane motion and registration with IMU/poses.

IntegrationMedium

Computer, SLAM software, clean time/pose reference and mechanical protection are additionally required.

Operating range / quantity

From 0.2 m; up to 25 m on white targets in Enhanced mode, 20 m in Outdoor mode

Error / dispersion

Manufacturer: 1% up to 3 m; 2% at 3–5 m; 2.5% at 5–25 m

Interface

TTL UART (3.3 V levels), 256,000 bit/s

SLAMTEC

RPLIDAR S2 (S2M1-R2)

Affordable 360° scanning for local contour maps and SLAM prototypes.

Affordable entry into local 2D mapping; incomplete on its own for free-flying 3D navigation.

Mapping pipeline: Produces planar distance contours. A continuous map requires motion and estimated poses/SLAM; a 3D map additionally requires motion with a precise orientation reference. No factory-provided autonomous navigation.

IntegrationMedium

Add companion computer, SDK/ROS, timing reference, mounting calibration and SLAM with pose/IMU data.

Operating range / quantity

0.05–30 m at 90%; up to 10 m at 10% reflectivity

Error / dispersion

±30 mm; range resolution 13 mm

Interface

TTL UART, 1 Mbit/s; S2E Ethernet is a different variant

SLAMTEC

RPLIDAR S3

Lighter 360° ToF scanner for local mapping and obstacle contours.

Interesting for small SLAM prototypes with a tight weight budget; solve three-dimensional coverage separately.

Mapping pipeline: Provides planar 360° points. A larger 2D map requires motion and SLAM/poses; 3D additionally needs known motion and orientation. Not complete flight navigation.

IntegrationMedium

5 V supply with startup headroom, computer, driver, timing reference and pose/IMU fusion required.

Operating range / quantity

0.05–40 m at 70%; 15 m at 10%; 5 m at 2% reflectivity

Error / dispersion

±30 mm; 10 mm resolution

Interface

TTL-UART, 1 Mbit/s

YDLIDAR / EAI

TG30

More robust 360° ToF scanning for 2D contours and SLAM.

2D SLAM and contour experiments with an enclosed scanner; check version/weight before procurement.

Mapping pipeline: Individual planar scans form a registered map only with motion and poses. 3D reconstruction requires additional known scan-plane motion and orientation.

IntegrationMedium

Add YDLIDAR SDK/ROS, companion computer and SLAM/IMU/pose fusion; confirm exact supplied revision.

Operating range / quantity

0.05–30 m; account for target reflectivity and lighting

Error / dispersion

±60 mm up to 5 m; ±40 mm at 5–20 m; ±100 mm at 20–30 m (80% test target)

Interface

UART 512,000 bit/s; Exp-Tech package includes USB adapter

Hesai

JT128

Lightweight, dense near-surroundings sensing with a large solid angle.

Interesting lightweight sensor for all-round vision and facade sensing; measure actual coverage on the aircraft frame.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationMedium

Always use the supplied unit’s firetime and angle corrections. Manual requires channel-specific motion compensation in mobile and precision-critical applications.

Operating range / quantity

0–60 m instrumented range; 40 m at 10% reflectance across all channels.

Error / dispersion

Typically ±3 cm accuracy; 2 cm precision (standard deviation) in current J01 manual. Do not equate with complete flight-control error.

Interface

100BASE-TX Ethernet; GNSS/PTP, IMU; official Hesai SDK and ROS/ROS2 driver support JT128.

Hesai

JT16

Lightweight all-round sensing as an affordable test sensor.

Weight and power consumption are attractive for compact drones. Mounting angle must account for the upward-facing vertical fan.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationMedium

Observe serial interface, firmware baud rate and angle-correction file; do not assume connection box and cables are included in the base price.

Operating range / quantity

0.15–100 m instrumented measurement range; 30 m at 10% reflectance across all channels, 50% detection probability and 0–100 klx.

Error / dispersion

Typically ±3 cm accuracy; 3 cm precision (1σ). These separate specifications are not overall SLAM or nozzle-control accuracy.

Interface

Native RS485 at 3,000,000 baud; certain firmware 3,125,000 baud. Ethernet via suitable connection box; official Hesai SDK and ROS driver list JT16.

Hesai

XT16

Industrial comparison

16-channel sensor with 360° × 30°; for mapping and geometry.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationHigh

Ethernet/SDK/ROS integration on companion computer, calibration and a custom odometry/mapping pipeline required.

Operating range / quantity

0.05–120 m

Error / dispersion

Typically ±1 cm accuracy; 0.5 cm spread (1σ), observe test conditions.

Interface

Ethernet / manufacturer SDK / ROS

Hesai

XT32

Denser 3D geometry

32 channels, 360° × 31°; finer vertical sampling than XT16.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationHigh

As for XT16, with greater point-data volume; size processing, bandwidth, synchronisation and calibration.

Operating range / quantity

0.05–120 m

Error / dispersion

Typically ±1 cm accuracy; 0.5 cm spread (1σ), observe test conditions.

Interface

Ethernet / manufacturer SDK / ROS

Hesai

XT32M2X (XT32M family)

Precise 3D geometry, SLAM and surveying.

Worth testing for geometric measurements on drones with sufficient payload capacity. A 50 cm sensor-to-surface distance is at the minimum limit; a nozzle offset changes the required sensor distance.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationMedium

Implement time synchronisation, motion compensation, sensor pose and separate close-range protection. Do not apply general XT zero-blind-zone advertising to this specific model.

Operating range / quantity

0.5–300 m measurement range; 80 m at 10% reflectance across all channels (100 klx, >90% detection probability).

Error / dispersion

±1 cm accuracy; 0.5 cm typical precision (1σ), standard value 1 cm. Typical test: 0.5–50 m, 50% reflectance, 30 °C; do not transfer to glass/spray mist.

Interface

100BASE-TX Ethernet; GNSS/PTP; official Hesai SDK and ROS/ROS2 driver support XT32M2X.

Livox

Avia

Directional 3D point clouds for SLAM and custom aerial mapping integration.

Light enough for custom 3D SLAM prototypes; directional field of view requires suitable mounting and additional coverage.

Mapping pipeline: Produces actual spatial points. Continuous maps require LiDAR/IMU SLAM and poses; georeferenced survey results additionally need GNSS/INS and calibrated processing. Not a complete payload.

IntegrationHigh

Add computer, time synchronisation, LiDAR/IMU calibration and SLAM; for surveying, add GNSS/INS, trajectory and processing software.

Operating range / quantity

At 100 klux: 190 m at 10%, 320 m at 80%; 450 m at 80% only at 0 klux

Error / dispersion

Distance precision 2 cm (1σ at 20 m on an 80% target), not global map accuracy

Interface

100 Mbit Ethernet; PTPv2/PPS/GPS time; internal BMI088 IMU

Livox

MID-360

Existing systems / mapping

Reference for existing systems; predecessor to MID-360S.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationHigh

Companion computer, SDK/driver, time synchronisation, IMU/sensor extrinsics and a custom LIO/SLAM pipeline required.

Operating range / quantity

0.10–70 m, target dependent

Error / dispersion

≤3 cm spread (1σ) at 0.2 m; ≤2 cm at 10 m.

Interface

Ethernet / Livox SDK2 / ROS

Livox

MID-360S

Surroundings / SLAM

Affordable candidate for 3D mapping and local motion estimation.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationHigh

Integrate a current model-specific driver, companion computer, synchronisation and LIO/SLAM processing; flight controller receives derived measurements/pose.

Operating range / quantity

0.10–100 m; 40 m at 10% reflectance

Error / dispersion

≤4 cm spread (1σ) at 0.2 m; ≤2 cm at 10 m.

Interface

Ethernet / SDK2 / ROS 2

Ouster

OS0-128 Rev8

Premium / industrial comparison

128 channels, 360° × 90°, broad 3D field of view and industrial housing.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationHigh

Gigabit Ethernet, adequate power supply and companion processing; check revision, scan mode, synchronisation and calibration.

Operating range / quantity

35 m at 10% and 75 m at 80% reflectance (100 klx, >90% detection probability); 500 m is the encodable range. Minimum distance 0.5 m default, optional 0.3/0.0 m.

Error / dispersion

Typically ±1.25 cm on diffuse targets and ±2.5 cm on retroreflectors; precision 0.25–1.5 cm (1σ). These figures apply beyond 1 m at 1024 × 10 Hz. 1 mm distance resolution is not an accuracy guarantee.

Interface

UDP over Gigabit Ethernet; HTTPS API, synchronous IMU, PTP/gPTP/PPS; manufacturer SDK plus ROS and ROS2.

Ouster

OS1 Max Rev8 (64 / 128 / 256 channels)

Long-range 3D sensing and large-scale facade geometry.

More suited to larger payload platforms and surveying before cleaning. Long range alone does not improve 50 cm nozzle standoff.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationMedium

Allow for companion computer, thermally suitable mount, time synchronisation and calibrated sensor-to-nozzle transformation. Integrate point cloud into flight and distance estimation.

Operating range / quantity

200 m at 10% and 350 m at 80% reflectance (100 klx, >90% detection probability); 500 m maximum encodable range. Minimum range 0.5 m default; optional 0.3/0.0 m.

Error / dispersion

Typically ±1.25 cm on diffuse targets and ±2.5 cm on retroreflectors; precision 0.25–1.5 cm (1σ). These figures apply beyond 1 m at 1024 × 10 Hz. 1 mm distance resolution is not an accuracy guarantee.

Interface

UDP over Gigabit Ethernet; HTTPS API, synchronous IMU, PTP/gPTP/PPS; manufacturer SDK plus ROS and ROS2.

Ouster

OS1 Rev8 (32 / 64 / 128 channels)

Medium range for facade models and obstacle detection.

Plausible as a 3D sensor on a drone with sufficient payload capacity. The test specification beyond 1 m does not establish ±5 cm nozzle control at 50 cm.

Mapping pipeline: Spatial point clouds become a map through registration, time-aligned IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control cleaning flight.

IntegrationMedium

Allow for companion computer, thermally suitable mount, time synchronisation and calibrated sensor-to-nozzle transformation. Integrate point cloud into flight and distance estimation.

Operating range / quantity

90 m at 10% and 170 m at 80% reflectance (100 klx, >90% detection probability); 500 m maximum encodable range. Minimum range 0.5 m default; optional 0.3 or 0.0 m.

Error / dispersion

Typically ±1.25 cm on diffuse targets and ±2.5 cm on retroreflectors; precision 0.25–1.5 cm (1σ). These figures apply beyond 1 m at 1024 × 10 Hz. 1 mm distance resolution is not an accuracy guarantee.

Interface

UDP over Gigabit Ethernet; HTTPS API, synchronous IMU, PTP/gPTP/PPS; manufacturer SDK plus ROS and ROS2.

Ouster

OSDome Rev8 (32 / 64 / 128 channels)

Hemispherical near-field sensing and obstacle context.

Interesting for broad near-field sensing if propellers, frame and hose do not obstruct the field of view.

Mapping pipeline: Spatial point clouds become a map through registration, correctly timed IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control a cleaning flight.

IntegrationMedium

Allow for a companion computer, thermally suitable mount, time synchronization and calibrated sensor/nozzle transformation. Integrate the point cloud into flight and distance estimation.

Operating range / quantity

20 m at 10% and 45 m at 80% reflectivity (100 klx, >90% detection probability). Datasheet: 500 m encodable; minimum range 0.5 m standard, optionally 0.3/0.0 m.

Error / dispersion

Typically ±1.25 cm on diffuse targets / ±2.5 cm on retroreflectors; precision 0.5–5 cm (1σ), beyond 1 m at 1024 × 10 Hz. 1 mm resolution is not accuracy.

Interface

UDP over Gigabit Ethernet; HTTPS API, synchronous IMU, PTP/gPTP/PPS; manufacturer SDK plus ROS and ROS 2.

RoboSense

Airy · 96 Beam

Broad environmental perception

Lightweight 3D comparison candidate with a 360° × 90° field of view.

Mapping pipeline: Spatial point clouds become a map through registration, correctly timed IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control a cleaning flight.

IntegrationHigh

ROS driver, scan mode, synchronization, calibration and companion processing must match the flight and map coordinate frames.

Operating range / quantity

0.10–60 m; 30 m at 10% reflectivity

Error / dispersion

Typically 1.5 cm dispersion (1σ), using a specified diffuse reflector.

Interface

Ethernet / UDP / ROS

RoboSense

Fairy 48-Beam – Device Only

Lightweight sensor for dense 3D façade points and UAV mapping.

Low weight and a structured point cloud are promising for UAV trials. Resolve missing near-range and variant data before selection.

Mapping pipeline: Spatial point clouds become a map through registration, correctly timed IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control a cleaning flight.

IntegrationMedium

Select the correct TX/T1 connection, firmware, IMU calibration and driver version. First establish the offered unit’s supply, protection rating and minimum distance.

Operating range / quantity

Up to 150 m manufacturer maximum; the reviewed product page does not separately establish minimum detection distance. 0.5 m is the lower limit of a published precision test, not necessarily the blind zone.

Error / dispersion

Manufacturer states 0.5 cm (1σ): classify as precision, not guaranteed ±0.5 cm absolute error. Family page: 0.5–70 m, 50% reflectivity, 30 °C, channels 25–72; confirm applicability to the supplied 48-channel variant.

Interface

RoboSense SDK with ROS/ROS 2 support lists RS-LiDAR-FAIRY; TX/T1 accessory variants in the shop, so specify the connection standard.

RoboSense

Helios 32 (H32F70)

Three-dimensional surround view with strong downward coverage for mapping/SLAM.

Strong 3D surround mapping on a sufficiently capable platform; about 1 kg of sensor plus wiring is substantial for a small drone.

Mapping pipeline: Produces spatial surround point clouds. Mapping needs a trajectory/poses, IMU, synchronization and a SLAM computer; georeferencing also needs GNSS/INS. Not a complete flight-navigation package.

IntegrationHigh

Add RoboSense drivers, a computer, Ethernet connection, synchronized IMU/poses and LiDAR SLAM; specify the connection kit.

Operating range / quantity

Up to 150 m; 110 m at 10% NIST reflectivity; blind zone ≤0.2 m

Error / dispersion

Typical range precision 1 cm on a 50% NIST target, dependent on channel/environment

Interface

100BASE-T1; UDP; PPS/$GPRMC, PTP/gPTP

RoboSense

RS-Bpearl (offered 0.92 kg configuration)

Established comparison sensor for hemispherical near-field perception.

Technically testable as a broad near-field sensor, but almost 1 kg sensor weight is unattractive for small drones.

Mapping pipeline: Spatial point clouds become a map through registration, correctly timed IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control a cleaning flight.

IntegrationMedium

Tie this price listing to its 0.92 kg specification; confirm exact revision, datasheet and package contents before ordering.

Operating range / quantity

For this documented configuration: 0.1–30 m at 10% reflectivity; manufacturer specifies a near blind zone ≤10 cm.

Error / dispersion

Associated manufacturer manual: typically ±3 cm on a 50% NIST target; do not transfer another Bpearl revision’s 1 cm precision.

Interface

100 Mbit Ethernet/UDP; manufacturer SDK with ROS and ROS 2 supports RS-Bpearl.

Seyond

Robin E1X (192-line configuration)

Low-power forward sensor for more distant façades and obstacles.

Unsuitable for direct measurement at a 50 cm sensor-to-surface distance because minimum range is 1 m. For a set-back sensor, calculate the actual sensor distance from the nozzle geometry.

Mapping pipeline: Spatial point clouds become a map through registration, correctly timed IMU/pose data and SLAM. Georeferencing additionally requires suitable GNSS/INS data and calibration; the sensor alone does not control a cleaning flight.

IntegrationHigh

Check Automotive Ethernet connection, supply and the exact line/scan variant. Provide a separate suitable near-range sensor.

Operating range / quantity

1–250 m according to the current manufacturer page and 192-line brochure; 200 m at 10% reflectivity. Older 96-line documents specify up to 300 m.

Error / dispersion

±5 cm ranging accuracy; 3 cm precision (1σ). Angular sampling of 0.1° × 0.1° is a different quantity.

Interface

Automotive Ethernet 1000BASE-T1, compatible with 100BASE-T1; UDP/TCP; PTP/gPTP/NTP. Official Seyond driver supports Robin E1X plus ROS and ROS 2.

RIEGL

VUX-1UAV²² — scanner only

Dense georeferenced corridor/terrain point clouds for professional surveying.

For separate surveying flights on a large platform; usually too heavy for compact façade-cleaning drones.

Mapping pipeline: The line scanner produces a georeferenced 3D map only through flight motion and precise GNSS/IMU poses. Do not confuse a bare scanner with a complete VUX-SYS payload; not a cleaning-navigation system.

IntegrationHigh

Allow for a capable platform, GNSS/INS, boresight calibration, trajectory processing and RIEGL analysis software.

Operating range / quantity

PRR-dependent: at 50 kHz up to 755 m @20% / 1,415 m @80%; at 1,200 kHz 160 / 320 m; minimum distance 1.5–3 m

Error / dispersion

10 mm measurement accuracy; 5 mm precision (1σ at 150 m)

Interface

Gigabit LAN, USB 2.0, GNSS RS232/PPS; 1 TB SSD

RIEGL

miniVUX-3UAV — scanner only

Professional line scanner for georeferenced terrain/object point clouds.

Survey sensor for a separate mapping mission; payload mass and a 2 m minimum range fit close-range cleaning poorly.

Mapping pipeline: A moving line scanner combined with a GNSS/IMU trajectory produces a georeferenced 3D point cloud. Distinguish the bare scanner from an integrated miniVUX-SYS/RiLOC payload; no autonomous cleaning navigation.

IntegrationHigh

Add GNSS/INS, such as the optional RiLOC solution, a mount, boresight calibration, trajectory/RIEGL software and a data workflow.

Operating range / quantity

From 2 m; up to 170 m at ≥20% / 330 m at ≥80% reflectivity (mode-dependent)

Error / dispersion

15 mm measurement accuracy; 10 mm precision under RIEGL test conditions

Interface

2× Gigabit LAN; Wi-Fi; GNSS RS232/PPS; SD storage

YellowScan

Mapper+

Matched LiDAR/GNSS/IMU system for georeferenced 3D maps.

More complete survey payload for separate mapping missions; serves a substantially different purpose from real-time glass distance and cleaning navigation.

Mapping pipeline: Integrated LiDAR/GNSS/IMU payload for a georeferenced 3D point cloud after trajectory and point-cloud processing. Includes more than a bare sensor, but does not replace autonomous cleaning or collision control.

IntegrationHigh

Requires a suitable drone mount, GNSS correction/trajectory workflow and map processing; clarify CloudStation/LiveStation options separately.

Operating range / quantity

Recommended maximum flight altitude 100 m AGL; laser range up to 230 m

Error / dispersion

System accuracy 4 cm; system precision 3.5 cm according to manufacturer

Interface

Integrated Livox Avia + Applanix APX-15 UAV; Skyport/Gremsy or external power connection, USB data workflow

ARK Electronics

ARK Flow (ARK-FLOW; standard, not MR/LR)

Relative ground motion to reduce drift; ToF height

Very lightweight supplementary measurement against ground-relative drift in suitable scenes.

IntegrationMedium

Mount downwards, fuse flow and ToF, and define quality thresholds and spray protection.

Operating range / quantity

Flow from 0.08 m, optically without a fixed far-focus limit; integrated ToF, typically up to 30 m, limits the metric height reference

Error / dispersion

No general module accuracy for velocity or distance stated in the reviewed product overview

Interface

DroneCAN, two 4-pin JST-GH; PAW3902, AFBR-S50LV85D and IMU

Bitcraze

Lighthouse positioning deck (114991751)

GNSS-free laboratory flight using optical base stations

Useful for repeatable indoor development; manufacturer does not intend sunlit facade use.

IntegrationHigh

Calibrate station geometry; develop a custom receiver/pose bridge for Cube/PX4. It is not a conventional rangefinder.

Operating range / quantity

Tracked volume limited by visibility and stations; manufacturer reports a 5 × 5 m test area

Error / dispersion

In a 5 × 5 m test: relative precision <1 mm, absolute accuracy <10 cm; these differ

Interface

UART / Crazyflie deck; observe maximum 3 V external signals

Bitcraze

Loco positioning deck (114990655)

Small local test volume for GNSS-free navigation

Affordable learning and bench-testing option, primarily developed for indoor Crazyflie use.

IntegrationHigh

Install at least four, preferably eight Loco Nodes; bridging to another flight controller requires custom development.

Operating range / quantity

10 m tested in datasheet; no guaranteed outdoor coverage

Error / dispersion

±10 cm UWB range per DWM1000 specification; position error depends on anchors

Interface

Crazyflie deck interface; no ready-made Cube/PX4 sensor

CubePilot

Here4 Multiband RTK GNSS (HX4-06248)

Global outdoor position; supplementary navigation

Lightweight GNSS for missions and a global reference; local distance sensors remain necessary.

IntegrationMedium

Handle correction delivery and fix loss; check hardware/firmware versions, especially for moving baseline.

Operating range / quantity

Satellite position; no wall-distance measurement interval

Error / dispersion

RTK 0.01 m + 1 ppm CEP according to CubePilot; only with suitable reception and correction conditions

Interface

DroneCAN / CAN FD, NEO-F9P L1/L5; UART pins present

Holybro

DroneCAN H-RTK F9P Helical (SKU 12037)

Global position and outdoor flight navigation; no direct wall distance

Global navigation and a return point complement local façade sensors.

IntegrationMedium

Check correction delivery, antenna position, CAN termination and behaviour during RTK float/fix loss.

Operating range / quantity

Satellite navigation; no near-distance measurement range

Error / dispersion

Manufacturer: 1.5 m with 3D fix; 0.01 m RTK under suitable conditions; no façade-clearance guarantee

Interface

DroneCAN 1 Mbit/s; UART2 for moving-baseline applications; USB for base operation

Holybro

H-Flow Optical Flow / Distance (SKU 19006)

Relative horizontal velocity over the ground plus height measurement

Supplementary drift measurement during GNSS outages while textured ground remains visible.

IntegrationMedium

Configure orientation, lever arm, flow scaling, quality and EKF fusion; perform calibration over suitable ground.

Operating range / quantity

Flow: stated 0.08–30 m; ToF typically up to 30 m, depending on target and environment

Error / dispersion

No general velocity or distance accuracy stated in the reviewed module overview

Interface

DroneCAN, 4-pin Pixhawk JST-GH; integrated ICM-42688-P IMU

Luxonis

OAK-D Pro USB – IMX378

Combines depth images, RGB documentation and local object detection.

Useful when object detection or image analysis is required alongside spatial perception. Deliberately select a near-range profile for 50 cm.

IntegrationMedium

Run DepthAI and ROS 2 on a companion; match model conversion, camera/depth profiles and power supply. Deliberately choose fixed-focus/global-shutter RGB options for vibration.

Operating range / quantity

Ideal approximately 0.8–12 m; minimum depth approximately 0.8 m at 800P, 0.4 m at 400P or in extended disparity mode, 0.2 m at 400P plus extended mode.

Error / dispersion

Manufacturer median unit at 800P/75 mm baseline: <2% absolute depth error below 4 m, <4% at 4–7 m. Not a guaranteed maximum error for every unit.

Interface

USB-C, DepthAI/RVC2, integrated BNO086 IMU; official depthai-ros driver.

Luxonis

OAK-D Pro W USB – IMX378

Broad spatial perception and near-range coverage with fewer cameras.

Useful for broad collision/environment perception and a nominal 50 cm near range; lower angular pixel density than standard OAK-D Pro.

IntegrationMedium

Connect USB to a companion and use DepthAI/ROS 2; account for wide-angle calibration, RGB-depth overlap and edge masks. Send only validated derived data to the flight controller.

Operating range / quantity

Ideal 0.4–6 m; minimum depth approximately 0.37 m at 800P or 0.2 m with an extended profile. Advertised 12 m is maximum effective range at the image centre, not precision working range.

Error / dispersion

Manufacturer median unit at 800P: <2% absolute depth error below 3.5 m, <4% at 3.5–6.5 m; worse towards the image edges.

Interface

USB-C 3.2 Gen 1, RVC2/DepthAI, BNO086 IMU and depthai-ros.

Marvelmind

Starter Set Industrial Super-MP-3D

Local 3D position from fixed ultrasonic beacons

A GNSS-free experiment using local infrastructure; it does not measure wall distance.

IntegrationHigh

Secure beacons, verify the local map, mount the mobile beacon with vibration control and fuse position with IMU; validate a version-specific ExternalNav bridge.

Operating range / quantity

Recommended acoustic path up to 30 m depending on frequency and environment

Error / dispersion

Super-MP family: typical ±2 cm in suitable conditions; unproven in rotor wash/spray

Interface

RS485 / UART / USB; Super-Modem also Wi-Fi UDP

ModalAI

VOXL 2 Board Only (MDK-M0154-1-00)

Onboard computing platform for visual local navigation

Suitable platform for VIO with fixed marker references; board price is not a complete positioning sensor.

IntegrationHigh

Add a compatible tracking camera; align intrinsics/extrinsics, timestamps and firmware versions; handle quality degradation and reset jumps.

Operating range / quantity

No intrinsic ranging interval; depends on separately selected camera and scene

Error / dispersion

VIO accumulates drift; no guaranteed absolute centimetre accuracy

Interface

MIPI cameras; PX4/ArduPilot integration, MAVLink / ROS via VOXL SDK

Nooploop

LinkTrack P-B (LTP-B)

Local radio coordinate system without GNSS

A local position aid with several surveyed anchors; a dedicated nozzle range sensor is still required.

IntegrationHigh

Calibrate anchors at different elevations; fuse timestamped tag measurements with IMU data and supply External Navigation.

Operating range / quantity

Selection guide V1.3: recommended P-B radio distance 300 m; facade performance unproven

Error / dispersion

LinkTrack: typical 10 cm in 1D/2D, 30 cm in 3D; system figures, no ±5 cm guarantee

Interface

UART / USB; ROS protocol integration

OptiTrack

PrimeX 13

Reference measurement and local flight position using multiple external cameras

Strong reference for a controlled test volume; substantial setup for a complete outdoor facade.

IntegrationHigh

Calibrate multiple cameras and a rigid marker body; transform coordinates/timebase and monitor pose quality and link failures.

Operating range / quantity

Capture volume depends on camera count, lenses, marker size and installation

Error / dispersion

System/calibration-dependent; one camera alone does not provide advertised system accuracy

Interface

Ethernet; Motive / NatNet, custom MAVLink pose bridge

Orbbec

Femto Bolt

Alternative depth method for laboratory work, indoor mapping and material tests.

Useful as an iToF comparison sensor and in protected indoor spaces; poorly suited as an exposed outdoor façade sensor on the cleaning head.

IntegrationMedium

Connect USB to a companion, use Orbbec SDK/OrbbecSDK_ROS2, and select a suitable depth mode and adequate power. Depth processing requires a host; not an autonomous flight-controller sensor.

Operating range / quantity

WFOV: 0.25–2.21 m unbinned or 0.25–2.88 m binned. NFOV: 0.5–3.86 m unbinned or up to 5.46 m with 2×2 binning; maxima are not all simultaneous.

Error / dispersion

Manufacturer: typical systematic error <11 mm +0.1% of distance, random standard deviation ≤17 mm under specified conditions. No guarantee for wet glass façades.

Interface

USB 3.2 Gen 1 Type-C; 12 V DC or USB-C power, 8-pin synchronization, Orbbec SDK and ROS 2 wrapper.

Orbbec

Gemini 335L

Lightweight USB option for façade RGB-D and point clouds with extended near range.

An interesting trial option around 50 cm and for RGB-D mapping; nominal near range does not prove the ±5 cm requirement.

IntegrationMedium

Connect USB to a companion, use OrbbecSDK_ROS2 and a calibrated camera pose; evaluate point-cloud/depth quality before feeding the autopilot interface.

Operating range / quantity

Ideal 0.25–6 m; nominal operating range 0.17–20 m+ depends on profile and scene, not guaranteed façade range.

Error / dispersion

Manufacturer calibration metric: ≤0.8% at 2 m (1280×800, 90×90% ROI), ≤1.6% at 4 m (80×80% ROI). Not maximum error for every surface.

Interface

USB 3.0/2.0 Type-C, UVC, Orbbec SDK v2; 8-pin synchronization and 6-DoF IMU.

RealSense

Depth Camera D455

Affordable USB entry point for spatial perception and RGB-D mapping.

Useful for initial RGB-D/point-cloud experiments with a companion computer; 50 cm is already below the stated minimum depth at full resolution.

IntegrationMedium

Connect USB to a Linux companion, use the SDK and realsense-ros; configure drone extrinsics, timestamps and quality filtering. No direct Pixhawk distance-sensor interface.

Operating range / quantity

Ideal 0.6–6 m; minimum depth about 0.52 m at maximum resolution.

Error / dispersion

Manufacturer: <2% at 4 m. This does not establish accuracy at 0.5 m.

Interface

USB-C 3.1 Gen 1; RealSense SDK/librealsense and ROS 2 wrapper.

RealSense

Depth Camera D457 GMSL/FAKRA

Mechanically locked camera connection for an integrated Jetson system.

Suitable for a planned Jetson/GMSL integration; at full resolution it has the same near-range conflict around 50 cm as D455.

IntegrationHigh

Choose a GMSL deserializer with drivers matching the JetPack/kernel version, then run librealsense/ROS 2 on the companion. MAVLink output requires custom processing and integration.

Operating range / quantity

Ideal 0.6–6 m; minimum depth about 0.52 m at maximum resolution.

Error / dispersion

Manufacturer: <2% at 4 m under reference conditions; no wet-glass guarantee.

Interface

GMSL over FAKRA; Maxim deserializer required at the host; not a simple USB camera replacement.

RealSense

Depth Camera D555 PoE

Image/depth acquisition over Gigabit Ethernet and PoE.

Interesting for an Ethernet topology; significantly heavier than USB stereo. A suitable reduced-depth profile is required for 50 cm.

IntegrationHigh

Configure PoE converter/PSE, Gigabit port and MTU/DDS network; verify ROS 2/SDK/firmware compatibility for the exact release. Not a direct autopilot rangefinder.

Operating range / quantity

Ideal 0.6–6 m; minimum depth about 0.52 m at maximum resolution, 0.26 m in VGA mode.

Error / dispersion

No independent current D555 accuracy metric verified in the reviewed datasheet; do not transfer D455 values wholesale.

Interface

Gigabit Ethernet/RJ45, PoE and DDS in RealSense SDK; USB-C for power/synchronization and production/debug use.

Stereolabs

ZED X Mini — 2.2 mm wide angle

RGB stereo, visual odometry and mapping on Jetson.

Useful for mapping, VIO and close 3D on textured surfaces; requires a more powerful companion system.

IntegrationHigh

Match compatible Jetson/carrier, ZED Link, drivers, ZED SDK and ROS 2. No direct USB operation or Pixhawk interface.

Operating range / quantity

2.2 mm variant: ideal 0.1–4 m; maximum hardware range 0.1–8 m. Do not transfer values from the 4 mm/narrow variant.

Error / dispersion

Manufacturer: <1.6% at 2 m, <3% at 4 m for the 2.2 mm variant; no guaranteed error at 50 cm on glass.

Interface

GMSL2 through FAKRA-Z, ZED Link capture card/ZED Box and a supported NVIDIA Jetson; ZED SDK/ROS 2.

Texas Instruments

IWR6843AOPEVM (development board)

Radar research: point cloud and custom distance/velocity estimation

Technology experiment for a future custom radar system; substantial development effort.

IntegrationHigh

Develop chirps, DSP, tracking, outlier handling and a message adapter; check the board revision.

Operating range / quantity

No fixed rangefinder measurement interval; depends on chirp profile, target and algorithm

Error / dispersion

No general distance accuracy guaranteed for the complete board; must be developed and measured for the application

Interface

USB for point clouds; expansion connectors, optional MMWAVEICBOOST / DCA1000

ifm

PT5400 (0–400 bar)

Pressure monitoring at the pump or in an appropriately pressure-rated cleaning line

Useful for pressure-drop and pump monitoring; does not measure wall distance.

IntegrationMedium

Provide a current-loop receiver/ADC or I/O gateway; detect pressure spikes and line failure. No direct PX4/Cube plug-in connection.

Operating range / quantity

0–400 bar gauge pressure; static pressure rating 1,000 bar, minimum burst pressure 1,700 bar. These limits do not extend the measuring range.

Error / dispersion

Characteristic deviation <±0.5% of span, i.e. <±2 bar at 400 bar full scale; allow separately for temperature effects. ±0.05% describes repeatability only.

Interface

4–20 mA, M12; G1/4 male process thread

ifm

SM6000 (feed line, maximum 16 bar)

Monitoring conductive feed water at the ground station before the high-pressure pump

Useful for consumption logging and insufficient feed-water detection when conductivity is sufficient.

IntegrationMedium

IO-Link master or suitable pulse/current receiver at the ground controller; check water conductivity, 3×DN/1×DN inlet/outlet runs and a completely filled pipe.

Operating range / quantity

0.1–25 l/min; maximum 16 bar. Suitable low-pressure feed line only, never a 100–250-bar cleaning line.

Error / dispersion

±(0.8% of reading + 0.5% of range end value), manufacturer specification; does not prove nozzle flow if a downstream leak exists

Interface

IO-Link, switching/analogue/pulse outputs; G1/2 male DN15 process connection

SparkFun

SEN-21669 10 kg load cell + SEN-13879 HX711

Low-cost hose-tension or reaction-force experiment, starting on a fixed test rig

Very inexpensive prototype for characterising hose tension; wet airborne use requires mechanical and electrical development.

IntegrationMedium

Calibrate with known forces, limit side loading, design positive retention and an overload stop, and protect electronics from water. Start with data logging only.

Operating range / quantity

Rated load 10 kg, approximately 98 N at standard gravity; only in the intended mechanical loading direction

Error / dispersion

Manufacturer states 0.05% FS for the load cell; this does not automatically describe an installed, vibrating hose-tension measurement.

Interface

Four-wire strain-gauge bridge to HX711; clock/data to a microcontroller, no native CAN/PX4

Gill Instruments

WindUltra 1416-PK-210-01

Local wind and gust monitoring at an unobstructed ground station or on a validated aircraft boom

Useful for weather assessment and logging; recommend initial installation at the ground station.

IntegrationHigh

1416-PK-210-01 includes head and M12 connector; add suitable pole/mounting/cable. Record timestamps and status; investigate motion, attitude and airflow errors for airborne installation.

Operating range / quantity

0–75 m/s; direction 0–360°. Sensor range is not an approved wind limit for the cleaning aircraft.

Error / dispersion

0–20 m/s: <2% RMSE or 0.1 m/s, whichever is greater; direction <1° RMSE. Above 20 m/s: <3% / <2°. RMSE is not a maximum-error guarantee.

Interface

RS485/RS422, Modbus RTU, NMEA and SDI-12; USB for configuration

Acconeer

XE125 with XM125 / A121 (evaluation board)

Research setup for radar distance/presence detection as an additional sensing principle

Inexpensive radar experiment for a fixed rig; not yet wet-environment airborne distance protection.

IntegrationHigh

Develop profiles and target selection; flag dropouts/multiple targets, then build a timestamped companion interface. Include outdoor housing and radome in validation.

Operating range / quantity

Manufacturer states up to 20 m, depending on target, profile and installation; qualify minimum distance and a valid 50 cm working window for the application

Error / dispersion

No general facade-distance accuracy guaranteed for the complete XE125 system. Sensor technology alone does not establish ±5 cm flight regulation.

Interface

USB-UART and header I²C/UART; firmware/software bridge required