This project was created to accomplish three tasks:

• Be a demonstration of creating a user-defined I2C controlled device.
• Make a project example using the I2C-IO board.
• Used as a basis for a web controlled stepper motor for a valve control project.

This stepper motor is "fire and forget" meaning that once the setup is done and the motor commanded to move, the I2C-IO takes care of the stepping signal sequence (and number of steps), independent of the  controller - which can move onto other tasks (such as controlling another I2C stepper motor) and poll when the stepping cycle is complete.

The stepping cycle can be commanded to stop mid-cycle if necessary.

Arduino code for the I2C-IO controller is located here:

https://github.com/mdlougheed/I2C-IO-Stepper

See the related I2C-IO project page located here:

https://hackaday.io/project/174984-i2c-io