RE: [CAD_CAM_EDM_DRO] Stepper Motor Driver

I chose to use the LMD18245 based driver module from
www.embeddedtronics.com. Not only is it a microstep driver but I managed to
asemble them for less than $50 Canadian each. All the parts are available
from Digikey.

With the source code available I was even able to modify it slightly for my
needs.

John Dammeyer


Wireless CAN with the CANRF module now available.
http://www.autoartisans.com/products
Automation Artisans Inc.
Ph. 1 250 544 4950

> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Blue
> Sent: Saturday, October 01, 2005 11:41 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Stepper Motor Driver
>
>
> Hi,
>
> I was going to use this driver with 50oz motors of 1 amp using a power
> supply of about 20 volts. The machine would be quite small for
> drilling/routing circuit boards.
>
> Speed is not really an issue but I wouldn't want o wait all
> day for it to
> finish a job. I thiught it was a cheap alternative to proper drivers.
>
> Regards,
>
> Terry
>
>
> | Blue wrote:
> |
> | >Hi,
> | >
> | >I thinking of buying this kit in the link below. Could one of you
> | >electronics people look at the link and tell me if I need
> resistors in
> | >series with the motor connections and if so where and what
> sizes and
> | >wattage.
> | >
> | >http://www.electronic-kits-and-projects.com/kit-files/3000/3179.pdf
> | >
> | >
> | This drive will operate the resistance-limited motors found
> in floppy
> | drives,
> | etc. It is of no use on any motor above size 17, as it will self
> | destruct due
> | to the motor's inductance, which they made no provisions to
> handle. You
> | will also have to supply very large (100 Watt+) resistors
> to limit motor
> | current. The performance of this driver will be abominable
> at any speed
> | above zero. You will be lucky to get it up to 60 RPM
> before the motors
> | stall.
> |
> | Jon
>
>
>
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