So, I've finished putting together the code for my coil winding jig. I've added  the code for the optical counter and threw in a reset switch, that resets the turns count.

The display is your run of the mill  16x2 LCD.

The Arduino code and also the other files for this build are in my GitHub repository. Also, for a full write-up, you can check out my blog page for this project.

Here's a short demo video of the winder. Enjoy!