The M542T driver used in this project is disassembled from the same 3D printer. Few words about this The good part was that I knew I could control the stepper motor with this driver. The bad part is that it was necessary to make adjustments to control the motor to reach the desired result. Theoretically, I would have to connect the stepper motor to the driver, the driver to the Arduino, and then control the stepper motor without any problems. Things work differently than my expectations. The fact that I use a Bluetooth connection make a change in the driver’s behavior for normal operation. The M542T driver is a cheap hardware resource (~ 1EUR / piece) and can control stepper motors powered by a voltage between 8V to 35V. Until I explain the settings from the driver, I will start with the beginning – with the power supply. Working with A4988 To work, the M542T needs a 5V voltage source. All the project is powered by a 12V – 3A power adapter and an adjustable LTC3...