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This is a bot I built a few years ago when I wanted to start learning robotics. More images here. Its based on the Atmel Mega644P MCU and has an dual H-Bridge driving two geared motors with Quadrature Encoders on them. I first wrote (ok found other examples on the web and then made them better) interrupt drivers to update two sined long integers holding the movements (forwards and back) at 564 ticks per 1 revolution of the motors (Faulhaber). It also has an MicroSD card for recording the ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/roverx