[Bart] built a couple dozen Pololu compatible relay drivers. If you have a Reprap, you’re probably familiar with the Pololu stepper motor driver. These tiny pieces of kit provide stepper motor control ...

TMC2209 is a stepper motor driver chip from German firm Trinamic that I suspect folk interested in the insides of 3D printers will be hearing a lot more about in the near future. In many printers, the ...