PreArm: check proximity sensor

Yes, I’ve change, thanks a lot.
I have the radar screen, but only for RNGFND1 as altitude laser sensor…

Change for mission planner and FW copter 4. Thanks

I have no proximity sonar working…
radar show only the altitude laser sensor. RNGFND1. However it show the 3 directions (forward, right, left) of proximity sonars.
RNGFND2, 3, 4 measurement seems doesn’t existe for pixhawk

I’ve checked the I2C address and range mesurement on arduino, all is ok.

Don’t understand

RNGFND2_TYPE, RNGFND3_TYPE, RNGFND4_TYPE parameters need to be correctly set for them to work, and please reboot after changing them.

I do not understand your question. I do not understand your problam. Can you explain it better?

I have 3 sonars sensors and 1 laser altitude sensor.
All 4 are tested on arduino.
I2c address are checked.
Setup in MP seems right.

But

Proximity radar show only the altitude rangefinder (rngfnd1)
The 3 sonars (front, left, right) aren’t detected as they don’t resend any distance or arming alert when I put a book in front of each one.