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Good day!

I am making an open source 3d printer as my minor project for college but I am stuck as my motors are not functioning properly, either they are just vibrating at their place or not working at all.

I am using Nema 17 motors(https://www.oyostepper.com/category-6-b0-Nema-17-Stepper-Motor.html) with A4998 stepper driver and Aurdino Mega 2560. I googled how to know the correct Tx and Rx terminals, as I thought it was problem, but now my motor is not functioning at all when i run it individually with the Arduino, power supply and stepper driver. Can you please tell me how I should get my motors to run?

Any feedback will be highly appreciated.

Do you have a schematic for the circuit and an arduino sketch for the software?

Have you looked at somegthing like this https://www.makerguides.com/a4988-stepper-motor-driver-arduino-tutorial/