Lidar lite PWM setup. unknown sensor error on qgc

Im trying to integrate lidar lite V3 ll40ls with pixhawk 5 using PWM interface. the pixhawk doesnt seem to recognize the sensor. and displays it as ‘unknown sensor’ in the summary. ive set SENS_EN_LL40LS to 1 but I can’t seem to find DISTANCE_SENSOR as a mavlink message.

Hi Ashhad,

Have you followed the wiring guide on the operation manual (for PWM you need to add a 1kOhm resistor on the yellow wire). I personally use the I2C communication with my PX4 controller.


hi Sean thanks for the reply. that is exactly what was wrong with it. you are a lifesaver