Hi there! I'm quite new here, so here's what I've done so far. I successfully uploaded firmware initially and configured my 3DR quad fully. I had a few successful flights which were great and then upon changing lipos today, the quad stopped working. The symptom was the ESCs beeping at regular intervals. I brought it home to diagnose and cannot get Mission Planner to connect to it through USB (which it has always done successfully before). I've tried lowering the baud rate to 57600, even though the highest rate worked fine before, but with no success. I'm going to paste my terminal output to see if anyone can help troubleshoot... Thanks in advance! I have tried re-uploading firmware to APM, with no noticable change in behavior... HELP!
Thanks! -joe
Begin Terminal Log:
INFO ArdupilotMega.MAVLink - Open port with COM4 57600
INFO ArdupilotMega.MAVLink - 537 Start connect loop
VsBCHsh88vhH)!wNxINFO ArdupilotMega.MAVLink - MAVLINK: S wait time out btr 0 len
0
INFO ArdupilotMega.MAVLink - MAVLink readpacket read error: System.Exception: Ti
meout
at ArdupilotMega.MAVLink.readPacket() in C:\Users\hog\Documents\Visual Studio
2010\Projects\ArdupilotMega\ArdupilotMega\MAVLink.cs:line 2036
bps 0 loss 0 left 0 mem 36.677734375
INFO ArdupilotMega.MAVLink - Mavlink Bad Packet (crc fail) len 0 crc 65535 pkno
-1
,n(Xp*
H
Pbps 0 loss 0 left 1 mem 36.6630859375
INFO ArdupilotMega.MAVLink - Mavlink Bad Packet (crc fail) len 32 crc 60180 pkno
177
INFO ArdupilotMega.MAVLink - 663 Start connect loop
(8x@INFO ArdupilotMega.MAVLink - MAVLINK: L wait time out btr 7 len 30
bps 32 loss 0 left 0 mem 36.7333984375
INFO ArdupilotMega.MAVLink - Mavlink Bad Packet (Len Fail) len 32 pkno 160
c` @xINFO ArdupilotMega.MAVLink - MAVLINK: L wait time out btr 7 len 22
bps 32 loss 0 left 0 mem 36.7568359375
INFO ArdupilotMega.MAVLink - Mavlink Bad Packet (crc fail) len 24 crc 41226 pkno
16
INFO ArdupilotMega.MAVLink - 507 Start connect loop
P (INFO ArdupilotMega.MAVLink - MAVLINK: L wait time out btr 9 len 38
bps 24 loss 0 left 0 mem 36.6787109375
INFO ArdupilotMega.MAVLink - Mavlink Bad Packet (Len Fail) len 40 pkno 40
INFO ArdupilotMega.MAVLink - MAVLINK: L wait time out btr 7 len 38
bps 40 loss 0 left 0 mem 36.65625
INFO ArdupilotMega.MAVLink - Mavlink Bad Packet (crc fail) len 40 crc 10870 pkno
168
INFO ArdupilotMega.MAVLink - 508 Start connect loop
Replies
OK, after re-reading the entire troubleshooting section, rebooting my computer and re-uploading the firmware, I'm back up and running. Any clue as to why just changing a lipo put the APM in a funky state? Thanks, and I'll try not to panic so hard next time; I just thought I might have hosed it... ;)
Cheers,
-joe