Description

A watch winder for automatic wrist watches made of a PCB from my old line follower (PIC16F1847 MCU, L298N motor driver), a geared motor from an old printer, Orbit Peppermint gum case, Casio watch metal box and wooden pieces of my old bed.

This is a watch winder, which I made as a gift for my neighbor who is a collector of automatic wrist watches that need to wind up from time to time. It should be done by rotating the watches in a selected direction and speed in a nearly vertical position. As a PCB for this machine I used the one from my old line follower BEDA4, which will need a new board for its upgrade for the next year´s competitions and so the old one became useless. The PCB with PIC16F1847 and a bidirectional motor driver L298N provides control of speed and direction of the geared motor from an old printer. Reflective sensors QRD1114 were removed, Sharp GP2 distance sensor was replaced by a 10k potentiometer from an old radio and the program was changed. The PCB is powered from AC adaptor providing 6 VDC/500 mA. The current consumption in operation is approx. 250 mA (1.5 W).

A plastic cogwheel is screwed to the bottom of Orbit Peppermint gum case, into which a wristwatch is inserted and fixed by a plastic foam. The geared motor is screwed to the lid of the Casio watch metal box, which bottom is then screwed to the wooden frame from my old bed.

I have got an idea for a new watch winder in a “deluxe“ version for multiple watches, made from HP Photosmart 1215 printer paper feeding, adding there LCD, precise speed control by an optical encoder (part of the printer) and a joystick for setting the parameters. Looking forward to putting it here soon J.

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