Automatic watch winder for 2 automatic watches and powered by geared motor, servo or raspberry pi zero.
Parts list and tips:
- Low noise motor (Option1) and driving geared motor (Option 2)with 10rpm max.
- Power switch On/off
- Steel pins size to suit gear axle
- Bearing (either printed out or steel bearing)
- 8 driving gear.stl
- 2 Nos. 40x8 -final.stl
OR Geared Motor (1020555 3K1655)Option:
- 1 No. 40x8-final.stl
Programmable timer and an USB power supplier
Raspberry Pi Zero with a modified relay controller
IC 555 delay timer switch
Watch cups were fixed with bearing on the back panel and rotated and guarded by front panel. To ensure prefect contact, watch cups shall be heated with hot water or hair dryer and then pull fit into panel and turned for 10+ rounds until smooth to run. Finally, some grease may add on it for easy of turning. For the watches, it was fixed into cups with oval shaped spongy material (cut from heat pipe insulation materials).
Noise may be generated during the operation, please review the specifications of the driving motor for its operation voltage. If it is possible, please use a low noise geared motor as in crystal display stand. IC, LM317 may be used to step down the voltage in order to slow down the driving motor such that noise can be reduced. In my case, 5V USB adopter of mobile phone was used as power with a LM317 to convert voltage to 3.9V with 475 ohm and 1k ohm resistors. It is programmed to run 3 times every day via 7 x 24 hrs. digital timer plug.
Optional functions such as AIY with raspberry pi and powered by USB for mobile docking or charging stand.
If you do not want to print or make one, you may buy a watch winder in below link from me in a more reasonable price.
Last update on 19 Aug 2018:
Please ensure the motor can be mounted into the T-frame. Otherwise, you must design your frame to fit it into the gear system. The gear was support by the axles (i.e. stainless steel pins for the watch or steel rods). For the long run, my motor was powered by an USB adopter and a power switch on the case. An external 7x24 stock timer was plugged on the socket and the USB adopter was controlled by it. I have 3 rotation settings on each day and only rotating the watch in one direction.