HOMEMateksysMatek 3901-L0X Optical Flow Lidar Sensor FPV Drone Barometer Module for Indoor Hovering Position Hold No GPS Upgrade
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NewMatek 3901-L0X Optical Flow Lidar Sensor FPV Drone Barometer Module for Indoor Hovering Position Hold No GPS Upgrade
About Matek 3901-L0X Optical Flow Lidar Sensor:
This sensor works the same way as an optical mouse, helping your iNAV quad maintain position without GPS! This module also integrates a laser time-of-flight range sensor.
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Top highlights
Dual-Sensor Positioning: Combines an optical flow camera and a precision Lidar ranging sensor for flawless indoor and low-altitude holding.
Ultra-Lightweight 2g Design: Packs micro-engineering into a sub-2g footprint, adding negligible payload to toothpick or cinewhoop builds.
Solder-Friendly UART/MSP: Features universal UART connectivity using standard MSP protocol for effortless setup on modern flight controllers.
No-GPS Environment Stability: Delivers centimeter-level horizontal and vertical lock in indoor or dense urban canyons where GPS signals fail.
Wide Surface Adaptability: Advanced flow algorithm tracks multi-textured surfaces reliably, maintaining locked-in hover from 8cm up to 2m.
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Description
FAQ
Specifications
● Optical Flow: PMW3901
● Lidar: VL53L0X
● Interface UART
● Protocol: INAV MSP
● Working Range: 8cm~200cm
● Field of view: 42 degree(PMW3901), 27 degree(VL53L0X)
● Minimum Illumination >60Lux
● Input voltage: 4.5~5.5V
● Power Consumption: 40mA
● Size: 36*12mm, 2g
Tips
● Be sure Optical Flow lens to ground >2cm for opflow initialization while FC starting up.
● Maximum range of VL53L0X is 2m, Altitude hold 0~2m @ throttle 0~100% if VL53L0X is enabled.
● Any unused UART of FC supports it
● Sonar connection (Trig & Echo) has not been implemented
● Setting up Optic Flow in INAV PDF by digitalentity
Includes
● 1x Matek 3901 L0X Optical Flow & Lidar Sensor
Recommendations
FAQFeel free to ask us any questions
ASK A QUESTION
Q: Do I need a GPS module installed on my drone for this sensor to work?
A: No, this module operates completely independently of GPS. It is specifically designed to provide high-precision horizontal and vertical position locking in non-GPS environments, such as indoor gyms, residential rooms, abandoned warehouses, or dense urban spaces.
Q: What is the maximum effective working altitude for the Matek 3901-L0X?
A: The precision onboard laser Lidar ranging sensor and optical flow tracking array provide optimal, locked-in positioning performance from a minimum height of 8cm up to a maximum altitude of 2 meters (200cm) above the ground.
Q: Which flight controller firmware natively supports this optical flow module?
A: This hardware utilizes the standard MSP (MultiWii Serial Protocol). It is natively supported by modern firmware options including INAV (highly recommended for position hold features) and recent versions of Betaflight for surface-optics tracking and telemetry logging.
Q: Can this sensor track properly over completely flat or reflective surfaces?
A: The optical flow lens requires visible surface texture to track movement effectively. It works flawlessly on wood, carpet, concrete, and grass. However, its tracking accuracy may degrade over completely monochrome surfaces (like solid matte black sheets) or highly reflective surfaces (like mirrors or deep water).
Q: How should the module be mounted on my FPV drone frame for optimal tracking?
A: The module must be mounted facing straight down toward the ground, with a completely unobstructed clear view for both the optical flow camera lens and the Lidar sensor ports. Ensure it is isolated from high structural vibrations and kept clear of blowing prop-wash air currents whenever possible.
