Can't arm motors

ArduCopter Copter 3.2
1

I am using ardupilot 3.2.1 on a quadcopter (X config) and it has been working fine until I had a crash recently, there are no visible signs of damage to the ardupilot and the quad only required a motor shaft and 2 new props but I can’t get the motors to arm now.
I have tried a full reset by installing a different firmware then reinstall original firmware (as the terminal window just constantly produced gibberish) and been through all the settings but still not getting any motors.
I did notice in the messages tab in flight data that there are lots of lines in red, mostly saying [MAV 001:1] PreArm: Bad Velocity and there were also some saying [MAV 001:1] PreArm: High GPS HDOP or [MAV 001:1] PreArm: GPS glitch but I haven’t found anything useful in searches for explanations of these. APMplanner2 was showing that the APM had a 3D GPS fix at the time.
Any help would be very welcome.

2

@MikeGB,
Please provide tlog and/or dataflash logs to help troubleshoot your issue.
Regards,
TCIII GM

3

I’ve got a bit stuck on that one, did a search for where to find the logs and got to this page:
copter.ardupilot.com/wiki/common … n-planner/
but I don’t have the ‘dataflash logs’ button on my version of APMplanner as is shown on the web page and I can’t find a menu option for it.

4

Further to previous, I found the data folders on my PC, the dataflashlogs folder is empty but there are 4 files totalling 5 MB in the tlogs folder, there is also a logs.txt file in the data folder, which of them do I attach, our internet connection isn’t very good so it could take quite a long time if all of them are required.

5

@MikeGB,
Try using MP. The dataflash log download button is right below the HUD.
Regards,
TCIII GM

6

Afraid I don’t know what ‘MP’ is.
Don’t see the buttons, I have attached a screen shot of what I get.

7

MP is “Mission Planner” and you are running APM Planner. Can you download mission planner? That will allow you to get the logs.

8

Thanks for that.
It is showing 13 logs all dated 01/01/1970 00:00:00 so I downloaded 13 and it put 5 files on my PC, I have just attached the .log file, please let me know if more are needed.

9

It seems to be fixed, I ran the setup wizard in mission planner and the motors armed after.
Does it do something differently to APM planner during setup, as I had been through that a few times.