Learn Robotics Programming

Size

The choice of this depends on the chassis, specifically the size of the motors you have. In simple terms, the larger your chassis, the larger a controller you will need. The power handling capacity of a motor controller is specified in amps. For a robot like the The Robot Kit I'm Using image, around 1 to 1.5 amps per channel is good. The consequence of too low a rating can be disaster, resulting in a robot that barely moves, while the components cook themselves or violently go bang. Too large a controller has consequences for space, weight, and cost:

An L298n with a Heatsink

The level of integration can also contribute to size. A tiny ...