Arduino Nano - Pickup Winder

UPDATE: Added a Winding Guide attachment because I noticed it's very easy to track the wire off the bobbin. Simply add it into the bolting pattern for the Bobbin holder on either side of the bobbin and you'll never have to worry about having to start over when the wire jumps off the spool!

For years, I've wanted to try winding my own guitar pickups. After seeing the prices on even the most basic commercial winders, I decided it was time to make my own.

This particular winder uses an Arduino Nano, 25mm 1000 RPM gearmotor, A3144 hall effect sensor, 1602 I2C display, L298N motor driver, 12V 2A power supply, aluminum set screw hub, SPDT switches, potentiometers, a few 10K resistors, M3 button head screws, a magnet, and of course, 3D printed parts. 

Here are links to everything that isn't printed.

1602 12C Display
12V 1000 RPM Gearmotor
Potentiometer Kit w/ Knobs
On/Off/On SPDT Switches
12V 2A Supply w/ Barrel Jacks
L298N Motor Driver Boards
A3144 Hall Effect Sensors
Arduino Nano
M3 Screws/Nuts Kit
Set Screw Coupling - 4mm Shaft
20x5x2mm Neodymium Magnets
1/4W Resistor Kit (need 3 10Kohm resistors)

Here is the circuit diagram for wiring everything together.
All parts can be printed without supports, they'll just need to be laid flat in your slicer with the mating rods facing up and the bobbin holder with the hex holes facing up. 

Housing assembly is done with 12mm M3s. The sensor riser and sensor are glued in place with CA glue. On the Bobbin Holder, the magnet is glued in using CA glue, M3 nuts pressed into place in the hexagonal cutouts, and the shaft coupler screwed directly into the plastic with 5mm M3s. Barrel Jack can be clamped in place with M3s or glued down to the baseplate (I opted for gluing)

Bobbins are mounted to the holder using 20mm M3s. Arduino Nano can be left free hanging or zip-tied to the baseplate using the in-built tiedown points.

Code was used from this Instructable. BIG props to Tiny Boat Productions for the inspiration for this project and the excellent code. THANK YOU!
https://www.instructables.com/Pickup-Winder-V2/