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Unread 01-03-2011, 21:51
theprgramerdude theprgramerdude is offline
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AKA: Alex
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Re: Best Lift Design for Logomotion?

Quote:
Originally Posted by Jstack14 View Post
Sipmle and sweet! I like it. Do you have pictures or a video?
Sadly, no. However, Duluth is a week two event, so hopefully I can post it by then.

The attached drawing should provide a rough explanation. (Not to scale)

The winch consists of two window motors hooked up to a drum. The main bar going up is made of ~1/8" thick ~1" wide aluminum bar, and the PVC pipe varies around 1" in diameter, and the thickness is pretty beefy, although I doubt it weighs more than 10 pounds max, which is maybe twice that of the bar. A potentiometer allows us set a PID loop to set the arm angle to the correct height every time in under two seconds, although it goes from a full drop to maximum height in about half a second. And yes, we can hit all three levels.
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