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Matek Optical Flow and Lidar Sensor 3901-L0X

$43.95

The Matek optical flow and Lidar sensor a great replacement in INAV for GPS and works well with most builds. 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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Description

Matek Optical Flow and Lidar Sensor 3901-L0X

The Matek optical flow and Lidar sensor a great replacement in INAV for GPS and works well with most builds. 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.

Matek RGB LED BOARD 5050/12V

Specifications

  • Optical Flow: PMW3901
  • Lidar: VL53L0X
  • Interface UART
  • Protocol: 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 (F051 version),  2g
  • Size: 36*13mm (L051 version)  2g

ArduPilot Settings

Thread   https://discuss.ardupilot.org/t/msp-protocol-support/57944

ArduPilot latest firmware has supported MSP protocol since Sep.02

  • SERIALn_PROTOCOL = 32,  “n” is the serial number of UART in ArduPilot hwdef, not the FC UART number.  On some flight controllers, serial1 is not equal to UART1, Pls checkout the FC manual to get the corresponding serial number for each UART.
  • SERIAL_BAUD = 115
  • RNGFND_TYPE = 32
  • FLOW_TYPE = 7

MSP V2 Protocol

Communication between 3901-L0X module and Flight controller via UART MSP V2 protocol supported by INAV and ArduPilot.

There is no detailed datasheet of MSP V2 protocol.

Pls refer to the code in INAV and ArduPilot Github

Includes

  • 1x Module 3901-L0X

Tips

  • Make sure Optical Flow lens to ground >2cm for opflow initialization while FC starting up.
  • The maximum range of VL53L0X is 2m,   Altitude holds 0~2m @ throttle 0~100% if VL53L0X is enabled.
  • Any unused UART of FC supports it
  • Sonar connection (Trig & Echo) has not been implemented
  • If your flight controller doesn’t have a barometer detected, you won’t be able to select “NAV ALTHOLD” in the modes tab.

Additional information

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