Automatic coil winder

A short little demo video of my automated magnetic coil winder, which I called Coil-O-Matic 3000 (totally arbitrary).

I have an upcoming project that will require a bunch of magnetic coils, so I figured I would start by creating a coil winder and make that a project. This reuses a number of parts from an old 3D printer, motors, shafts, lead screw, pulleys...and the rest is all 3D printed and mounted on 2020 rails.

This is controlled by an Arduino Nano, TMC2209 drivers for 2 stepper motors, a custom PCB, a Noritake VFD module that I already had from a previous project, with some custom made characters and graphics, and a bunch of code!

The main motor is belt driven, and the wire guide/slider is direct driven on a lead screw. It doesn't use limit switches, the motors are sync'ed by code/calculations. It's not perfect but close enough and the coils work great.

Video hardware used, for those who are interested: Sony FX30, Voigtlander Nokton 40mm 1.2, Sony 90mm macro, Aputure/Amaran LED lights.

After this video was produced, I ended up modifying it to use a 3D printer nozzle to guide the wire better in the front. It can wind bifilar coils by just doubling up the wire (mounting 2 bobbins) and accounting for it when setting the wire gauge on the controller.

And one bonus timelapse with some of the parts I designed and used in this machine.