I have bought 2x APM2.6, 2x PM and 2x GPS with compass from DIYDrones store.
Tried to initially set up one set today. I have attached a PPM receiver on Ch5, cutting and resoldering the PPM jumper on the board. This was done correctly.
I used the PM fpr powering, fed with 9V from a regulated supply. Voltage looks OK. 5.024 volts after the diode.
First thing, the APM would not see the PPM signal, although it appeared nicely on a scope from the PPM jumper.
Later I noticed the GPS was hot and did not light up. The 8 pin IC (flash storage?) near the GPS connectors was hot too. After cycling power, this behaviour stopped again.
Now after lashing newest firmware, MP says Bad gyro health. I do have gyro readings in "Status tab" though. At random times, the whole IMU just stops working.
When working, I have 2.8 volts on the pad at the tail of the "Front" arrow. When it stops working, I get weak slow pulses there.
What's the deal here, I need to return it to the US?