A4988 StepStick Compatible Stepper Module

Running my small CNC router at higher micro-stepping finally feels smooth, and the driver stays cool even after an hour of carving. The step response is noticeably more precise than the generic boards I used to buy.

Finally got my dual extruder working smoothly after swapping to these modules. The microstepping is so much quieter than my old drivers.

The pin layout matches the standard StepStick footprint perfectly, so it dropped straight into my existing carrier board without any rework. Current limiting is easy to dial in with the trim pot, and it runs cool enough that I don't worry about heatsinking on a quick CNC test.