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How to control Nema 17 with M542T Stepper Motor Driver

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 LTC3780 DC buck/boost converter that lowers the voltage from 12V to 6V. The output of the LTC3780 is 6V because I need to power the servo motors of the robotic arm. The same 6V output I connected to Pololu’s S7V7F5 voltage regulator with 5V output. So, in the voltage regulator go 6V and pull out 5V – exactly what I need to power the A4988 driver.
I use the same voltage regulator to power the stepper motor driver, the Bluetooth communication module, and other components that require a power source of 5V.
Schema: A4988 control NEMA 17

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