Posted in Arduino Hacks Tagged A4988, arduino, dispenser, ir sensor, label, NEMA-17, stepper motor, sticker Tiptoe Through The Tulip Mania February 3, 2020 by Kristina Panos 4 Comments ...

I understood that the 3.3v on that pin should have provided a logic high, but it just didn’t. The arduino just always saw a floating pin, whether I grounded separately, together, or both to chassis.