LattePanda V1 Arduino pinouts

I need to know all of the pinouts on the LattePanda V1, especially the Arduino header pinouts. I can't find this info in any online documentation.

Also there is a 10-pin header next to the WiFi antenna connector and a 6-pin header next to the power connector. Neither of there are unidentified in any documentation.

Pinouts for these headers would be great also. Also, is there a connection on the board to connect an external power switch?

I am trying to connect one stepper motor and about 10 servos via a 16-servo control board via PWM

Thanks