How to Choose the Right Sensors for Your Drone Build
Choose the drone sensor by the job: position hold, ranging, telemetry, or Remote ID. The PMW3901 optical flow module holds position for $23.99. The VL53L1X laser sensor measures up to 400 cm for $11.99. The Holybro Remote ID module broadcasts flight data over WiFi and Bluetooth for $49.99.
Quick facts
| Fact | Value |
|---|---|
| PMW3901 mini | $23.99, optical flow, 3.3 to 3.6V |
| PMW3901 Pixhawk | $47.49, UART, JST-GH, TELEM ports |
| VL53L1X laser | $11.99, up to 400 cm |
| JC02-1 rangefinder | $84.85, 600 m, plus or minus 0.6 m |
| Remote ID module | $49.99, WiFi and Bluetooth, CAN and serial |
| MAVLink2 WiFi | $42.99, V1.0, antenna included |
| 3DR telemetry | $78.78, 915MHz, 500mW |
Which sensor holds a drone in position?
The PMW3901 optical flow module holds position for $23.99.
It watches the ground to hold a multi-rotor drone in place. It runs on 3.3 to 3.6V and suits small flight controllers.
The Pixhawk version costs $47.49 with a pre-soldered JST-GH connector. It plugs into TELEM ports over UART for PX4 or ArduPilot.
Which sensor measures distance below the drone?
The VL53L1X laser sensor measures up to 400 cm below the drone.
It is a time-of-flight laser ranging module on a breakout board. It suits Arduino and drone obstacle sensing projects.
The module costs $11.99. Pair it with optical flow for a steadier hold at low altitude.
Which sensor measures long range?
The JC02-1 laser rangefinder measures 600 to 1200 m by variant.
The 600 m version costs $84.85, the 800 m version costs $89.17, and the 1200 m version costs $101.65. It gives plus or minus 0.6 m accuracy with 0.1 m resolution.
It uses UART serial for ArduPilot, FPV drones, and DIY builds. Pick the range that matches the flight, not the longest one.
What does a Remote ID module do?
The Remote ID module broadcasts flight data over WiFi and Bluetooth for $49.99.
It is an FCC and CE certified radio with a case. It uses CAN and serial protocols with PX4 and ArduPilot.
It runs ArduRemoteID firmware. Check the FAA Remote ID rule before you fly, since the rule sets the broadcast requirement.
How do you get telemetry from the drone?
The MAVLink2 WiFi module links Mission Planner or QGroundControl for $42.99.
It ships with an antenna for Pixhawk and APM flight controllers. The V2.0 version costs $45.99, and the V3.0 version costs $48.99.
The 3DR 915MHz radio costs $78.78 for the 500mW set and $85.38 for the 100mW set. It carries MAVLink data over a long range.
How the options compare
| Sensor | Job | Key spec | Price |
|---|---|---|---|
| PMW3901 mini | Position hold | Optical flow, 3.3 to 3.6V | $23.99 |
| PMW3901 Pixhawk | Position hold | UART, JST-GH, TELEM ports | $47.49 |
| VL53L1X laser | Ranging below drone | Up to 400 cm | $11.99 |
| JC02-1, 600 m | Long-range ranging | Plus or minus 0.6 m, 0.1 m resolution | $84.85 |
| JC02-1, 1200 m | Long-range ranging | Plus or minus 0.6 m, 0.1 m resolution | $101.65 |
| Remote ID module | Flight data broadcast | WiFi and Bluetooth, CAN and serial | $49.99 |
| MAVLink2 WiFi | Telemetry link | V1.0, antenna included | $42.99 |
How do you pick the right drone sensor in five steps?
- Write down the job: position hold, ranging, telemetry, or Remote ID.
- Pick the PMW3901 module when the drone must hold position.
- Pick the VL53L1X laser when the drone needs ranging up to 400 cm.
- Pick the JC02-1 rangefinder when the job needs 600 m or more.
- Pick the Remote ID module and a telemetry radio for the flight link.
Parts that fit this guide
In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 10, 2026.
PMW3901 Optical Flow Module for Drone Position Hold ($23.99)
PMW3901 optical flow module at $23.99. It holds position on multi-rotor flight controllers and runs on 3.3 to 3.6V.
VL53L1X Laser Distance Sensor, 4m ($11.99)
VL53L1X laser sensor at $11.99. It is a time-of-flight module that measures up to 400 cm.
Genuine Liancheng JC02-1 Laser Rangefinder Module 600-1200m for FPV Drones and ArduPilot ($84.85)
JC02-1 laser rangefinder at $84.85 for the 600 m version. It measures 600 to 1200 m by variant with plus or minus 0.6 m accuracy.
Holybro Remote ID Module With Case – WiFi / Bluetooth, CAN / Serial, PX4 / ArduPilot ($49.99)
Remote ID module at $49.99. It broadcasts flight data over WiFi and Bluetooth with CAN and serial protocols.
MAVLink2 WiFi Telemetry Module for Pixhawk/APM ($42.99)
MAVLink2 WiFi telemetry module at $42.99 for V1.0. It links Mission Planner or QGroundControl wirelessly.
Shop the full range: GPS, Telemetry and Sensors at Quality RC Parts. See also: Related guide.
Frequently asked questions
Which optical flow sensor fits a Pixhawk flight controller?
The Pixhawk PMW3901 sensor at $47.49. It plugs into TELEM ports over UART with a JST-GH connector.
How far does the VL53L1X laser sensor measure?
Up to 400 cm. The module costs $11.99 and suits drone obstacle sensing projects.
What does a Remote ID module broadcast?
Flight data over WiFi and Bluetooth. The module costs $49.99 and uses CAN and serial protocols.
How do I get telemetry on my phone or laptop?
Use the MAVLink2 WiFi module at $42.99. It links Mission Planner or QGroundControl wirelessly.
Sources
Last updated: November 10, 2026.
