900Mhz 3DR + APM 2.5 problem to connect

Hi I have APM 2.5, and 3DR Radio 900Mhz yesterday I installed all for the first time, I made some flights (Arduplane), and Telemetry works excellent, today I updated my mission planner on one computer, and my 3DR Radio don't connect anymore, I tested in another computer with the old mission Planner, and have the same problem,
The radio Link works, two solid green Lights, and I can configure and get the settings, but when I try to connect I recive the error "No Heatbeat Packets recived" and no red lights.


Captura de pantalla 2012-11-14 a la(s) 19.56.32.png

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  • I have the same problem after updating mission planner I can no longer get connection and get the same No Heartbeat packets received.
    Radios are communicating with each other and can configure setting the same as you.

    Have tried for a week to get it to connect no luck...
    Let me know if you get yours to connect and what you did ,I am out of ideas???
  • Did you unplug the 3dr radio at any point after you updated the mission planner? I had the same symptoms as you described. I checked the wiring from the apm to the 3dr radio and the TX and RX lines were reversed. After correcting this they worked great.


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Aug 31
nick rymer left a comment on ArduCopter User Group
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