Quad Watch Winder

This watch winder is inspired by this thing: https://www.thingiverse.com/thing:2021221
Thank you Simone Dassi!
I adopted the shape of watch holder and plug. I modelled all parts in Fusion 360 from scratch.

ATMEGA is programmed like "Arduino on breadboard" as seen here:
https://www.arduino.cc/en/Tutorial/ArduinoToBreadboard - the minimal version without external clock, running on 8 MHz.

I put everything on a piece of prototype PCB. I desoldered all the pins from motor drivers and soldered leads directly on them. Do not forget to close the jumper pads on the driver.
I also removed all the resistors from driver pcbs - to shut off the LEDs. Could have removed the LEDs but resistors seemed to be easier option.

All pcbs are mounted in the winder with double sided mounting tape. USB connector is glued in with superglue and everything is then covered with midplate. USB PCB needs to be trimmed in order to fit in. I filed it down from both sides carefully. Base is glued together wi