Turntable For My Curing Device

I use a nail-curing-device for my resin-printed parts.
The resin that is mend for casting needs some extra intense uv-curing but must not get to hot at the same time. A turntable and a fan should be a good idea.

https://youtu.be/O4ifQMotPWM

I replaced the original bottom with my turntable - you can pull it in and out like a drawer.


I used parts I had laying around:

- a bearing (608z - 8/22mm)
- an arduino
- a stepper driver
- a stepper motor retrieved from an old DVD-drive
- a fan (12V, 40 mm), optional
- some wire
- double sided tape to mount the foil on top of the turntable
- some aluminium foil
- a cable tie
- some screws

I used an arduino uno and a motor-shield. The shield is not needed but made things a bit easier.
The sketch is really simple based on the AccelStepper-library and the ConstandSpeed example. I tried several speeds and slowed things down then to reduce noise.

Important: Set V-ref with the potentiometer on the step-driver to a low as