tag:blogger.com,1999:blog-66374258232801685702011-04-21T18:15:38.594-07:00Allan C. Eckerhttp://www.blogger.com/profile/07903953903205162951noreply@blogger.comBlogger21100tag:blogger.com,1999:blog-6637425823280168570.post-13835509672123780972009-02-27T19:41:00.000-08:002009-02-27T19:51:06.336-08:00<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://3.bp.blogspot.com/_3TCLUwmhoUU/SaizK2uFBAI/AAAAAAAAAAM/lqWmXBc0OAQ/s1600-h/junkrap000.png"><img style="margin: 0pt 10px 10px 0pt; float: left; cursor: pointer; width: 320px; height: 240px;" src="http://3.bp.blogspot.com/_3TCLUwmhoUU/SaizK2uFBAI/AAAAAAAAAAM/lqWmXBc0OAQ/s320/junkrap000.png" alt="" id="BLOGGER_PHOTO_ID_5307689159924974594" border="0" /></a><br />There's very little there at this point, but here's the basics:<br /><br />JunkRap is meant to be a low-cost scavenged prototyper built out of wood and printer parts. By getting one axis from the sheet feed, it's theoretically possible that a full 3-axis printer can be cobbled together from only two printers. The first one was torn apart ages ago, and left sitting in a box in my storage space until this week when I finally bolted the sheet feed motor and encoder onto some hobby wood and pronounced it "the x-axis setup". Now obviously I need another set of rollers or two before this can so much as push a plank back and forth (my definition of x-axis completion) but I already have the breakout pins for the encoder soldered up. I'm pretty sure I got pulses out of the encoder before, so I think I can do that again. The driver board is a tiny setup I made a while back to get an ATMega8 minimally controlling two motors. Now of course, there's a good chance that same board will end up driving the JunkRap well into its early stages as an xy pen plotter...<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/6637425823280168570-1383550967212378097?l=junkrap.blogspot.com' alt='' /></div>Allan C. Eckerhttp://www.blogger.com/profile/07903953903205162951noreply@blogger.com0tag:blogger.com,1999:blog-6637425823280168570.post-85774686946700785222009-02-27T19:39:00.000-08:002009-02-27T19:40:25.321-08:00This is at the moment just a placeholder. More posts are possible but unlikely.<br /><br />Proceed to <a href="http://www.youtube.com/user/MaskedRetriever">YouTube</a><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/6637425823280168570-8577468694670078522?l=junkrap.blogspot.com' alt='' /></div>Allan C. Eckerhttp://www.blogger.com/profile/07903953903205162951noreply@blogger.com0