The Allegro A4988 is one of many popular stepper driver chips with a STEP/DIR interface. Pololu popularized the tiny breakouts used for like every CNC and 3D printer. We wanted to make a slightly more expansive design. We have mounting holes, terminal blocks for power and stepper wires, and three LEDs that will indicate the direction and when a step is activated. What other stepper chips should we make breakouts for?
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