Ultrasonic (sonar) sensor not recognized


Just finished installing GY-US042v2 ultrasonic sensor to Pixhawk 2.4.8 I2C bus and configured Mission Planner as suggested, i.e. RNGFND_TYPE = “2”.
Sensor is not recognized…


Are you using ArduCopter 4.1.0-rc1 ? That sensor is very new, it requires the latest FW.

I’m using ArduCopter 4.0.7.

Actually, it seems to be working (showing sensor data) but I can’t choose anything in the Range Finder selection box (it is disabled, or grayed-out)