Unlike some drivers that use a potentiometer (like the A4988), the Mx1616 often sets current via sense resistor values on the board or via a digital potentiometer in advanced versions. Check your specific module. Calculating Maximum Current The Mx1616 uses a reference voltage (VREF) internally. If your board provides a VREF pin:
Choose Mx1616 when you need a step up from A4988 in thermal performance but do not require the silent, high-resolution features of TMC drivers. 9. Application Case Study: CNC Pen Plotter Project: A 2-axis pen plotter (X and Y axis) Motors: NEMA 17, 1.5A, 1.8° step Driver choice: Two Mx1616 drivers running at 1/8 microstep, 18V supply. Mx1616 Motor Driver Datasheet
stepper.setMaxSpeed(1000); // steps/second stepper.setAcceleration(500); stepper.moveTo(6400); // 2 full rotations (if 200 steps/rev * 16 microsteps) Unlike some drivers that use a potentiometer (like