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.
http://imageshack.us/a/img20/4991/capturadepantalla201211vw.png
Replies
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.
-Chris