i have Orion based Board and i built Tank with Robot arm that has 2 DC motor for movement and has 2 additional motor one for gripper and one for moving arm up and down. Now if i want to attach one of those 2 DOF pan and Tilt With MG995 Servos where i would like to attach small camera. So how would i connect these servos to the board? Based on schematic of the board i think i already used all slots that drive the motors. Is there a way i can get another motor driver and attach it to existing orion board or do i need to combine another Orion board?