Discussions

Hi all,

i have a problem with my new APM/IMU, i ordered it fully assembled and tested. First my quad ran well during pre-flight tests, hand tests were ok (pitch/aile/yaw). When i hooked it up with mission planner or first time, all seemed to be ok, except i never got connection with MAVlink, with terminal all tests went ok and i did first-time setup with firmware-tab. After that my APM seemed to work only occasionally. Sometimes it connected to planner and sometimes not. I tried to upload new firmware, but uploading fails near end and i get error about serial connection. Now after many tries i managed to push firmware through.

Symptoms now are:

- quad starts ok when "cold" (has been without power for more than 10 min)

- after motors are armed, i can use throttle, but after 15-20 secs the motors spool down and start beeping

  continuously (about 1 sec interval) and nothing happens, no responding to anything.

- if i now reboot (with power off) APM, it wont go through normal startup sequece (beeps/lights), but instantly starts that slow beeping of motors and no A/B/C lights on IMU.

- in this state APM wont connect to planner, even in CLI mode

- after 10-15 min this all can be done again...

here's video of what's happening.: https://www.youtube.com/watch?v=ppwdK8DLs18

One thing that's also weird: with my APM the motors arm with throttle stick down and LEFT (mode 2)