Xbee Telemetry kit 2.4 GHz + APM 2

I am using an APM2 together with the "Xbee Telemetry kit 2.4 GHz" and I am not able to establish a connection via APM Planner 1.1.85 (ArduPlane setting). I always get the error "No Heatbeat Packets Received" and in the command window:


INFO ArdupilotMega.MAVLink - Open port with COM30 57600
INFO ArdupilotMega.MAVLink - 186 Start connect loop
INFO ArdupilotMega.MAVLink - MAVLINK: S wait time out btr 0 len 0
INFO ArdupilotMega.MAVLink - MAVLink readpacket read error: System.Exception: Ti
   bei ArdupilotMega.MAVLink.readPacket() in C:\Users\hog\Documents\Visual Studi
o 2010\Projects\ArdupilotMega\ArdupilotMega\MAVLink.cs:Zeile 2063.
bps 0 loss 0 left 0 mem 36,4306640625
INFO ArdupilotMega.MAVLink - Mavlink Bad Packet (crc fail) len 0 crc 65535 pkno


I have tested both Xbees successfully with X-CTU. I can read out both modem configurations successfully and also the loop back test works. The baud rate is set to 57600.

Any suggestions why the connection does not work?

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –


  • I recently had the same issue and had to flip the TX and RX wires from my Xbee breakout board (Sparkfun Xbee explorer regulated) I am using the small harness that came with my APM2 to connect the breakout board to the APM2.

    I simply pulled the two pins from the connector and swapped them.


This reply was deleted.


Shivchand Jaysaval liked Shivchand Jaysaval's profile
Aug 25