Problem:

Tricopter is spinning immediately after take off.

Reason:

Servo at the tail of the tricopter is turning the opposite direction that the control board wants.

Solution:

Reverse the direction that the control board is turning the servo by:

• Go to mixer editor
• Go to Ch4 (the number in the upper right corner
• Make sure that at the bottom say “Servo”
• Change rudder from 100 to -100