This upgrade  will transform the the board from 6 DC motors controller in to a 3 stepper motor controller. I used an ATmega 1284p  microcontroller to create a board which  will replace the two ATmega328-PU and control those 3 H-Bridge L298N and being  able to control the stepper motors with one IC “ATmega1284P”.

The ATmega1284P will have to do the job of 3 EasyDriver like ” ROB-12779 ”

Schematic board:

Output view from PCB creator:

Pdf 3D model:

Upgrade stepper motor ATmega1284P 3D model.pdf

Assembled:

Video tested working board:

Upgrade board 3 stepper motor controller