Pololu Dual Serial Motor Controller
The pololu dual serial controller is a great component to controll more than 1 motor. It uses a single seraial cable from a microcontroller to control the motors. I am still trying to figure out how to crack the serial code for it. This is the connection for 2 motors:
It's hard for me as this is the first time programming for me.
You can see the programming rule by downloading the attachment and scrolling down to configuring and useing the motor controller.