Re: [ATM] motor drive question

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

Maybe. Look over this to get a better idea:

http://www.herbach.com/Merchant2/merchant.mv?Screen=SFNT&Store_Code=HAR

Look up:
Quantity in Basket: none 
Code: TM93KIT2421 
Price: $24.50

I purchased one about five years ago (it was cheaper then, ask if it is driven by a 555). IIRC, I just changed one resistor to get 1 rpm. You can get the parts a radio shack, but here they are in a bag and they should have a stepper that will work for you...

Tom Polk
________________________________________
From: eric torraca [mailto:eric.torraca@gmail.com] 
Sent: Tuesday, July 25, 2006 2:05 PM
To: Polk, Tom
Cc: Jarvis Krumbein; atm@atmlist.net
Subject: Re: [ATM] motor drive question

Is that the sort of thing I might find at a radio shack?
 
Eric

 
On 7/25/06, Polk, Tom <TPolk@decatur-al.gov> wrote: 
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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