Re: [ATM] motor drive question

["Polk, Tom" <TPolk@decatur-al.gov>]

Hello,

I would recommend finding a "kit" stepper motor driver circuit based on
the 555 timer. You can do a web search to find the formulas to modify
the 555 circuit to drive the stepper at 1 rpm. A unipolar stepper can be
found at many surplus dealers. This is what worked for me.

Tom Polk

-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On Behalf
Of eric torraca
Sent: Tuesday, July 25, 2006 1:11 PM
To: Jarvis Krumbein
Cc: atm@atmlist.net
Subject: Re: [ATM] motor drive question

Jarvis,

That's what I suspected. I timed it out roughly last night and it came
out
to 1rmp per 12 minutes. I wasn't sure if I could get an appropriate gear
to
step it up. How difficult are 1rmp motors to come by? Does anyone know
of
any common sources?

Eric

>SNIP<
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