Newbie with alternating ON Off DC Gearmotor circuit help.

[ronv]

There are several different ways to do it. The microprocessor is nice because there is very little additional hardware required but you have to buy or build "stuff" to program it and learn to program it.

Hardware will take several IC's and lots of wires (maybe 50) all of which need to be in the right place.

It will be a simple project for many here but maybe not for a beginner.

If you want to try it let me know and we can start with the motor driver (the ic to make the motors turn in both directions) since you can use it for either implementation.

 

[ronv]

The Orbita (one of the other winder videos) would be an easier implementation because it could be done with the limit switches instead of 30 minute timers.

 

[mbarazeen]

see the attached, if you have flexibility in choosing the time like 20min operation after 2hr & 40min like that, you can mechanically set limit switches as in the shown pic. its very simple

 

[shortbus=]

Why not use a offset pin on the gear motor to move the watch holder back and forth? That way it would imitate the natural arm movements. No one moves there arm one way for 30minutes then the other way for 30 minutes every 4 hours.

The watch holder would have a pivot at it's bottom and a pivot at the top connected to the offset pin(crank) on the gear motor. Then the only thing that would need controlled would be the time that the motor would run. The back and forth movement of the watch holder would be more like the motions of a person going through their daily movements.