NEMA 17 Driver Tuning Dial Stand
This is a bench stand for setting the current and checking microstepping on an A4988, DRV8825 or TMC driver. A NEMA 17 bolts shaft-up under a 64 x 64 mm dial plate with a 31 mm M3 pattern, a 22.4 mm pilot hole and 36 engraved ticks, one every 10°. A snap-off pointer with a 5.2 mm bore fits the 5 mm shaft, so you can see missed steps instead of guessing. The two 52 mm walls clear motor bodies up to 48 mm long, and the open ends leave room for the motor cable.
electronics nema17 stepper-driver test-fixture