<div dir="ltr">I guess if I plug to 120 I can use steppers. There's no time for parts order for halloween though. :)<div><br></div><div>I have soom of those steppers. They need four pins each I think. So I guess that's just 16 pins for four spiders...</div><div><br></div><div>I'll have a look and see if I can figure out those drivers quickly..</div></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr"><br><div><div><br></div><div><div>--</div><div>Darcy Whyte</div><div><br></div><div>Art+ <a href="http://inventorartist.com/" target="_blank">inventorArtist.com</a> | Aviation <a href="http://rubber-power.com/" target="_blank">rubber-power.com</a></div><div>Contact: <a href="mailto:darcy@inventorArtist.com" target="_blank">darcy@inventorArtist.com</a> | 613-563-3634 by appointment (no text)</div></div></div><div><br></div></div></div>
<br><div class="gmail_quote">On Sun, Oct 12, 2014 at 4:25 PM, Adrian Jones <span dir="ltr"><<a href="mailto:adrian@woodsgood.ca" target="_blank">adrian@woodsgood.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Darcy,<br>
A simple LED/photo resistor set-up, interrupted by one end of the toothed<br>
cable, may be sufficient for setting an start point so that you know where<br>
the spiders start. Then count the number of steps necessary for the stepper<br>
motor to move the spider to the end point et voila. I used this simple<br>
set-up for the pair of escalators I built for my partner's artwork<br>
installation and it works well.<br>
A geared stepper motor works really well when you want really slow<br>
movement... See<br>
<a href="http://www.ebay.ca/itm/221347325924?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m" target="_blank">http://www.ebay.ca/itm/221347325924?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m</a><br>
1497.l2649 Cheap and easy.<br>
<br>
<br>
Many thanks,<br>
<br>
.... Adrian<br>
<br>
<br>
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