Can't calibrate accelerometer

Hi everyone

I'm currently trying to setup an APM 2.6 for my tricopter. I've flashed the firmware, but can't calibrate the accelerometer. I've checked and found the 3.3v regulator is working, but for some reason it's just not calibrating.

Can anyone hel

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Powering APM and Servo from one bec on tricopter?

I read that you should not connect your servo's positive and negative wires to the apm output. I have 5A BEC which I would like to power the apm from, but can I also connect the servo up to this? In terms of the 5A limit this shouldn't be a problem b

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