Cant arm my Quad with multiwii 2.1 verson.

[Voguna]

I can arm my quad with multiwii flight controller. I have tested every esc to each motor, and when i plug the esc wire in the reciever and just try to start up one motor at the time, i arm the motors and it work. So i dont know where to look now. I have the 2.1 verson of the code, and calibrated it with acc and compass in GUI config tool. Is there any values in the code i should change? I use TURNIGY 25 amps ESCs.

[Voguna]

i had trim on throttle so i solved the question. BUT, they 4 motors are out of sync. Any ideas?

[waltr]

Study this tutorial for setting up for MW:
http://witespyquad.gostorego.com/videos.html

[scrat]

Upgrade to version 2.3. 2.1 is too old.