Sean,
If your on a budget then go with one of the Allegro chipset based controllers
(Hobbycnc etc..)
Try to get motors that are rated at 2.5-3 amps (about the max that an Allegro
chip can drive) and are rated around 3-5 volts.
Also, make sure you run the highest voltage the controller can handle (usually
around 36-42volts with an Allegro base controller).
These means hunting down a good 30VAC 10 amp transformer.
Don't waste your time or money with anything that is not a constant current,
pwm type controller.
There are schematics for Allegro based controllers to be found on the web if
you want to roll your own.
If you don't mind spending a bit more then go with the Geckos. You won't
regret it.
From: [EMAIL PROTECTED]
To: emc-users@lists.sourceforge.net
Sent: Friday, February 29, 2008 10:59 PM
Subject: [Emc-users] home-mad CNC machine project.
I was wondering if anyone has ever tried a do-it-yourself CNC project like
this.
http://www.instructables.com/id/Easy-to-build-CNC-Mill-Stepper-Motor-and-Driver-ci/
and this
http://www.instructables.com/id/Easy-to-Build-Desk-Top-3-Axis-CNC-Milling-Machine/
. If so, any pointers or words of knowledge before I dive in?
Also, I'm still looking for some stepper motors to use if anyone has a good
source.. I'm a college student, so I'm obviously broke and starving. So,
inexpensive would be good. Thanks guys.
Sean
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