at first, sorry about my english.
My hardware : APM2.6; 3DR Gps with compass; 3DR Radio and 2 MB1240 sonar.
My problem : If I enable the sonar, the sonar fires the data imediatly and continously to the telemetrie port. It is no possible to connect again to the MissionPlaner with 3DR Radio. I must disconnect the 3DR Radio, connect to USB (with USB I can connect the MP), dissable the sonar and change back to 3DR Radio. Then I can connect with 3DR Radio again. (without sonar).
Thats my first ArduRover project and I use the Version 2.43.
Thanks for your help
It is the sonar 2 connectet on APM Port A1. With one sonar on A0 it works.