<html><head><style type="text/css">body {word-wrap: break-word; background-color:#ffffff;}</style></head><body><div style="font-family: sans-serif; font-size: 16px">If you want it to 'snap' shut, maybe you want a cam or something out of round. The part that sticks out pushes down. then when the cam rotates far enough, it snaps shut.<br><br><br><font face="sans-serif"><span style="font-size: 14px"><i><font color="#333333">Connected by DROID on Verizon Wireless</font></i></span></font></div><br><br>-----Original message-----<br><blockquote style="; border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><div style="font-family: sans-serif; font-size: 14px"><b>From: </b>Mark Komarinski <mkomarinski@wayga.org><b><br>To: </b>hardwarehacking@blu.org<b><br>Sent: </b>Tue, May 1, 2012 21:20:07 GMT+00:00<b><br>Subject: </b>Re: [HH] Opening a skull (on topic, honest!)<br><br></div>On 5/1/12 4:53 PM, Tom Metro wrote:<br>> Mark Komarinski wrote:<br>>> The tension that's required to open it is too much for the<br>>> servo that I have. I was thinking a linear actuator...<br>> A solenoid is the obvious thing that comes to mind:<br>> <a href="http://www.halted.com/commerce/catalog/product.jsp?product_id=13355&czuid=1335905228724">http://www.halted.com/commerce/catalog/product.jsp?product_id=13355&czuid=1335905228724</a><br>> <a href="http://www.allelectronics.com/make-a-store/item/SOL-102/MINIATURE-12VDC-PUSH-TYPE-SOLENOID/1.html">http://www.allelectronics.com/make-a-store/item/SOL-102/MINIATURE-12VDC-PUSH-TYPE-SOLENOID/1.html</a><br>><br>> Of course with a solenoid you're pretty much stuck with a fast acting,<br>> full travel motion. If you want to some day animate the mouth to sync to<br>> speech or something, then it wouldn't be the right choice.<br>><br>><br>Ah, a friend gave me one that is in two pieces (the inner shaft can be <br>removed from the solenoid). The range of movement was rather small but <br>after thinking about it may be enough to get the jaw to open. I'll <br>fiddle with it a bit more and maybe find a larger servo (thanks Drew).<br><br>Expect more stupid questions.<br><br>-Mark<br>_______________________________________________<br>Hardwarehacking mailing list<br>Hardwarehacking@blu.org<br><a href="http://lists.blu.org/mailman/listinfo/hardwarehacking">http://lists.blu.org/mailman/listinfo/hardwarehacking</a><br></blockquote></body></html>