I have a question, I want to make a chess robot with NXT Mindstorm for my undergraduate thesis. As we know that NXT brick only has 3 motors port. In this project, I need 4 motors port, because I'm still a student and doesn't have much money to buy multiplexer, how can I plug the other one motor to NXT brick (3 motors are in use) ? Is it able to use the sensorport (input) for motorport (output) ?
Thanks for your attention.