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stepper motor


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Bizum



Joined: 10 Jul 2002
Posts: 22


Post13 Mar 2003 19:40   

lpt stepper motor


Hi there
I've a stepper motor from HDD drive.HDD model Seagate ST351 A/X, motor that spins the plate. It has 11 pinouts. Can someone tell me which pin is what:) There are some numbers on it: 73i57-870 ("i" or "1"), and REV E/EC5140. I don't know is it unipolar or bipolar, does it have tachometer or something...
Another question:) is it possible to connect this motor to LPT port? I don't want to use any other electric parts(resistors, transistors etc.), and in what sequence i should change output bits to spis it. Please don't give me URL because my technical english is not very good and i have some problems with understending things Wink Please write an answer in simplest language.
Sorry for my english. If someone can speak/write polish, it will be great:)
THX, BIG THX in advance.
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Post13 Mar 2003 19:40   

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hobbymat



Joined: 16 Feb 2003
Posts: 35


Post13 Mar 2003 22:48   


I'd say that it's rather a BLCD, i.e. brushless dc motor.

If you want to play with simple stepper motor things connected to LPT port, try an old floppy drive (preferably a 5.25" one). See
hxxp://www.hut.fi/Misc/Electronics/circuits/diskstepper.html
for an example. The drive uses a stepper to move the head, and the stepper can be moved stepwise if you connect the correct i/o pins to the LPT port.


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