Did I lose my APM (ArduCopter crash recovery )
Hi,
I started off with an ArduCopter , it took me a while but after I linked the three PID to three RC channels I finally got it stable in the air.
My PID where 3.20 , 0.32 , 1.11.
I'm using 9ch Radio, CF2822 motors, 20A ESC towardpro, 1047 propellers, 2200 3s and 1 CM square tubes all from HK. Length was ~ 60 CM .
After using it for at least three to four times, the airframe collapsed in midair (It was one faulty motor) , and it fell from around 10 meters high.
Besides the crashed frame, I discovered that the little white box besides the mini usb (I think it is the relay?) got 4 pins disconnected from the main board and I re-soldered them very carefully.
After crash recovery, I created a new airframe with the same components but was 50CM long.
I'm trying now for days , was no luck to get the right PID, it seems they are much grater than the previous ones (even 4.5 for P seems to be not enough).
When I loaded the APM ADC test , I discovered that both X-Gyro and Y-Gyro produces always the same values?!!
Did I lose my APM ?
Replies to This Discussion
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Permalink Reply by Kamil Rezac on -
Check if there is no short between gyro output lines... Also check the power for the gyro. Then I'd try to resolder the gyro (i.e. mask the ramaining of the board with aluminum foil and use hot air).
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ModeratorPermalink Reply by Chris Anderson on -
Kamil is right--sounds like the crash broke one gyro solder connection. A hot air gun treatment might fix it....
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Permalink Reply by Fouad on
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Thanks for your support.
I only have basic soldering skills, I tired my best to locate any another loose component but did not find any.
I checked VDD (pin 9,19 ) and they have good 3.1 volt , also the ground pins are connected.
I do not have an Oscilloscope to measure the xout and yout.(I think I need one ?)
The switch down=low is set to be 1,2,3,4 = low,high,low,low is this correct?
Is there any current use of the relay? after all this is the only component that I discovered to be disconnected ?
Tracing the board , I see that gyro output are going into the ADC, then suggesting to have an external SF IDG 500 that is hocked into two spare analogue pins as a workaround is not possible?
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ModeratorPermalink Reply by Sebastian Gralla on -
relay is not used in current code... (I use it, but it doesn't matter)
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