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DNA Dan's discussion about secret drive

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DNA Dan:
The implementation of the manual rotation circuit using PWM can be found in my project announcement thread here: http://forum.arcadecontrols.com/index.php?topic=110471.0

DaOld Man:
Looks good!
Your work area is almost as crowded as mine LOL.

DNA Dan:
Whoo hoo! I can confirm that the circuit for the PWM/Secret Motor Drive works! I finally got my stuff from solarbotic (which took 8 days and cost me $10 on a $30 minimum order) and it works flawlessly. I tried both the 5V and 12V molex sources on a power supply from a computer. The PWM board will drive the motor from full speed to a complete stop. It's a fairly sensitive adjustment, but I was impressed with the quality of the potentiometer. It's pretty slick. I have to say though, using the GM3 motor on the 5V plug doesn't really require the PWM. Especially if it's turning a 24" disk like my mechanics is setup. I'm a little at a loss for the size, I don't know how well it will hold up. The specs say it's meant to be operated at 6V without detriment to the motor, but I just don't think that's enough juice for my needs. Running it at 12V with the PWM throttling it seems much better, but I don't know if this will burn up the motor or not over time more quickly.

Anyway, I am super stoked that this worked out! I am waiting on some flange mounted bearings before proceeding on the mechanics side of things. I can however start on the motor arm.

BTW, I am only about 8 hours from Calgary and $10 for such a light package and 8 full business days is simply ridiculous. I would recommend http://www.pololu.com/ or some other source for this setup.

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