atmegaStepperDriver

Open source stepper driver powered by Atmega chip

Quick Description

This project was design to be used in my Modul3D project. Now It has its own project.
The idea to have simple, cheap, open source stepper driver for stepper motor

Features and design

• Powered by Atmega chip (at the moment Atmega328)
• H-Bridge design
• Flyback Voltage protection
• Standart stepper driver communication
• I2C communcation interface
• Fan controll

Current Development

Firmware

• Todo...

Hardware

Power

• Power supply for the chip
• Sepreate connection for power for the motor
• Pins for power

Main system

• H-bridge configuration
• Connect the pins to the transistor of H-bridge
• Calculate transistor resistor values

Communication

• Pins for communication
• I2C pins
• Address Changer
• Step mode (maybe in next version or firmware based)

Protection

• Add capacitor before transitor for smooth curves, but don't test it
• Flyback protection (with ziner diode)
• Power supply smoothing and return diode
• Fully test protection system

Misc.

• Change diode foot print