I need somemore help!
alright, I'm on to stepper motors, I have a uni-polar 6 wired stepper motor,
I understand I need to run my stamp pin through a transistor in order to
increase the current, but I'm not sure of the setup, like I don't know what
wires to connect to on my motor, I know that the 2 reds are common and the
colours of the different stages, but I don't the know where I connect the
collector of the transistor, that kinda stuff!
so any info would be great!
Thanks alot Brad
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I understand I need to run my stamp pin through a transistor in order to
increase the current, but I'm not sure of the setup, like I don't know what
wires to connect to on my motor, I know that the 2 reds are common and the
colours of the different stages, but I don't the know where I connect the
collector of the transistor, that kinda stuff!
so any info would be great!
Thanks alot Brad
_________________________________________________________________
Unlimited Internet access for only $21.95/month.· Try MSN!
http://resourcecenter.msn.com/access/plans/2monthsfree.asp
Comments
For interfacing outputs, the ULN2803 IC makes it simple. I don't know how
big your stepper is, but this IC will drive small steppers, and you can
always parallel it's outputs for additional current gain. I use them now
whenever I am interfacing an output from my basic stamp projects to protect
the stamp.
I don't know much about stepper motors, so I can't help you there, but I
will be following this thread to see what I can learn about them.
Here is a link to a data sheet on the ULN2803
http://www.onsemi.com/pub/Collateral/ULN2803-D.PDF
Regards,
Dwain.
Original Message
From: "Brad Hughson" <willkirby69@h...>
To: <basicstamps@yahoogroups.com>
Sent: Friday, October 18, 2002 10:16 AM
Subject: [noparse][[/noparse]basicstamps] I need somemore help!
>
>
> alright, I'm on to stepper motors, I have a uni-polar 6 wired stepper
motor,
> I understand I need to run my stamp pin through a transistor in order to
> increase the current, but I'm not sure of the setup, like I don't know
what
> wires to connect to on my motor, I know that the 2 reds are common and the
> colours of the different stages, but I don't the know where I connect the
> collector of the transistor, that kinda stuff!
>
> so any info would be great!
>
> Thanks alot Brad
>
>
>
>
>
>
> _________________________________________________________________
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>
See the Parallax Stamp1 Application Note 6: A Stepper Motor Controller.
It uses a ULN2003, which has 7 Darlington transistor drivers, but you
can also use the ULN2803, with 8 drivers, as Dwain suggested. In my
application, I added an extra relay to switch the motor current ON/OFF,
using a stamp pin and one of the unused ULN drivers to drive the relay.
Dennis
Original Message
From: Dwain J. Hill [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=MeLTdwPFWasfV06wBjZqzB8eB7E8hluCBAUvX5YDEwGswqGW5xykwlfrVgsZ7RjzENXao4kzXm2wv29klg]asdfghjk@b...[/url
Sent: Thursday, October 17, 2002 5:43 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] I need somemore help!
Brad,
For interfacing outputs, the ULN2803 IC makes it simple. I don't know
how big your stepper is, but this IC will drive small steppers, and you
can always parallel it's outputs for additional current gain. I use them
now whenever I am interfacing an output from my basic stamp projects to
protect the stamp.
I don't know much about stepper motors, so I can't help you there, but I
will be following this thread to see what I can learn about them.
Here is a link to a data sheet on the ULN2803
http://www.onsemi.com/pub/Collateral/ULN2803-D.PDF
Regards,
Dwain.
Original Message
From: "Brad Hughson" <willkirby69@h...>
To: <basicstamps@yahoogroups.com>
Sent: Friday, October 18, 2002 10:16 AM
Subject: [noparse][[/noparse]basicstamps] I need somemore help!
>
>
> alright, I'm on to stepper motors, I have a uni-polar 6 wired stepper
motor,
> I understand I need to run my stamp pin through a transistor in order
> to increase the current, but I'm not sure of the setup, like I don't
> know
what
> wires to connect to on my motor, I know that the 2 reds are common and
> the colours of the different stages, but I don't the know where I
> connect the collector of the transistor, that kinda stuff!
>
> so any info would be great!
>
> Thanks alot Brad
>
>
>
>
>
>
> _________________________________________________________________
> Unlimited Internet access for only $21.95/month. Try MSN!
> http://resourcecenter.msn.com/access/plans/2monthsfree.asp
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject
> and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject
and Body of the message will be ignored.
Your use of Yahoo! Groups is subject to
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