That's a great idea but surely there must already be an easy design out there using inexpensive parts.<div><br></div><div><br clear="all"><br><br>
<br><br><div class="gmail_quote">On Tue, Jul 12, 2011 at 12:25 PM, Michael <span dir="ltr"><<a href="mailto:krazatchu@hotmail.com">krazatchu@hotmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<u></u>
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You could design your own driver, I will donate/supply the
controller ic and passives ....<br>
<br>
I have a bunch of these parts taking up space that I may never get
around to using..<br>
It would be great to see them put to a good cause... They are AMIS
30512...<br>
I also have a variety of power stages: MC33932, L293DD, L298P,
ULN2803 that could be used with a mcu to make a programmable stepper
controller...<br>
<br>
If someone is willing to design one for the purpose of donating it,
I'm all in on supplying the parts ...<br>
I'll even toss in an extra set of parts for whoever designs it, to
make one for themselves...<br>
Disclaimer: As long as the parts used are parts I have in stock, I
have a good bit of kit on hand, mostly smd...<br>
<br>
Michael<br>
<a href="http://NoMiDesign.net/" target="_blank">http://NoMiDesign.net/</a>
<br>
<a href="http://krazatchu.ca/" target="_blank">http://krazatchu.ca/</a>
<br><div><div></div><div class="h5">
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<br>
On 7/12/2011 11:58 AM, Darcy Whyte wrote:
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<div><span style="font-family:verdana,arial,sans-serif;font-size:13px">
<p>
I think an <a title="Random
Drawbot!" href="http://mambohead.com/2011/07/random-drawbot/" style="color:rgb(54, 93, 160);font-weight:bold;text-decoration:none" target="_blank">arduino
drawbot</a> is a total blast. I want to make more
of them and am looking at the different ways of
controlling steppers with the arduino.</p>
<p><strong>Stepper Drivers</strong></p>
<p>
<a href="http://danthompsonsblog.blogspot.com/2010/05/easydriver-42-tutorial.html" style="color:rgb(54, 93, 160);font-weight:bold;text-decoration:none" target="_blank">Easydriver</a> is
one mechanism. They are about 15.00 each at
Robotshop. So that comes out to 30.00 which isn’t
too terrible. You can even run <a href="http://youtu.be/migN744l640" style="color:rgb(54, 93, 160);font-weight:bold;text-decoration:none" target="_blank">three</a> of these if you
want to do <a href="http://youtu.be/bBsjsoVXBNA" style="color:rgb(54, 93, 160);font-weight:bold;text-decoration:none" target="_blank">cnc</a>. That comes out to
75.00 to run a three axis CNC including the Arduino.
Not too bad for a small hobby project. But for
drawbot that’s a bit steep.</p>
<p>The Adafruit <a href="http://www.robotshop.com/ca/adafruit-motor-shield-kit-arduino.html" style="color:rgb(54, 93, 160);font-weight:bold;text-decoration:none" target="_blank">motor
shield</a> is a better deal for a drawbot. It’s
only 20.00 and it can run two servos and either two
steppers or four DC motors. Way more bang for the
buck.</p>
<p>What are good ways to get the price down even
further?</p>
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