We recommend using the M4 steel mounting screw to mount IG42 motors.
This is a prebuilt version of TP-251-003, our programmable triangular omni wheel vectoring robot. It can vector in any direction and is great for indoor robotics. An Arduino Mega and encoders allow for this to be an autonomous robot.
After building many custom WiFi HD2 robots, we have combined the most common requests and come up with this standard WiFi HD2 robot.