Offer it to an exploratory / museum type place perhaps? I was also thinking along these lines but having a "ballistic pendulum" whe= re ball bearings fall down from a height, hit a steel plate, then bounce up= to a collector and get recirculated. It might fit into stairwell or someth= ing I suppose :) Or maybe a really impractical ballistic analogue of the old mercury delay l= ine memories with a stream of ball bearings in flight... should be able to = manage eight bits or so at least, if I had a warehouse to ping them across = then maybe more, depends how fast they can be reliably launched I guess (so= lenoid, gauss gun, pneumatics?) lots to daydream about :) Cheers, Robin. -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of= IVP Sent: 05 December 2013 01:59 To: Microcontroller discussion list - Public. Subject: Re: [OT]:: Design and make a marble lift - NOW! > Check out marble machines on YouTube Great aren't they. So on my To Do list, I collected a few videos and hope t= o make something over the summer. Also in the works is a clock based on a b= agatelle (possibly pinball) game, using steel bearings Kinda like this, one of his whimsical non-clock projects http://woodgears.ca/reader/walters/marble_machine.html Trouble is, once it's made where to put it ? They aren't especially quiet, = not an artwork for the bedroom Joe -- http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/chang= e your membership options at http://mailman.mit.edu/mailman/listinfo/piclis= t --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .