kenny_-_:
I can use like 8 tiny's or something and then let them calculate for the arduino, how would you suggest to communicate then? Or do you think I should use something else?
I forget what the term is called, but there are IC's out there, designed for quadrature interface, that will count pulses for 4 motors per IC, then you can feed the information from each of those IC's to the arduino over I2C on a request-get method.