WATCH WINDER_old

This is a watch winder made with an arduino and with a cheap motor stepper.
(28BYJ-48 ULN2003 5V )
Since the watch doesn't need to rotate at high speed i increased the torque making some gears, so one motor lets the rotation of 2 watches.
The object is designed to use less pla possible( with a maximum budget of 10 euros you can make a personalized watch winder instead of paying 80 euro).
(I have a light watch and i made the calculation of baricentre with it... if you have got an heavy watch, just put some nuts inside the carter to increase the weigh.
if you have problems with the arduino sketch I can try to help you.
Thanks
I accept any suggestion to improve the design :)

Stepper motor and driver

https://www.banggood.com/custlink/vvvG7dVSoR

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