majorna Posted January 24, 2014 Posted January 24, 2014 I recently stumbled upon this genius contraption, which uses a combination of normal chain sections and treads to program a simple hand-cranked plotter: It reminded me of Sariel's mechanically programmable drummer, featured on this forum less than a month ago. It occurs to me that one might use a combination of tiles and "cheese wedge" pieces to similar effect. Can we come up with other solutions for mechanically programming our Lego creations? Quote
Sariel Posted January 24, 2014 Posted January 24, 2014 That sure looks way more precise than my drummer. Quote
roamingstop Posted January 24, 2014 Posted January 24, 2014 I remember a solution like this in one of the very early technic ideas books, with 1x4 gear racks mounted onto a technic treads... Quote
majorna Posted January 24, 2014 Author Posted January 24, 2014 (edited) Here's the plotter from the 8888 Idea Book: As you can see, not nearly as evolved, though repeating the program by placing the rack gears on the treads is clever. I messed around with this arrangement a while back, and the rack gears stayed put on those single studs about as well as you'd expect. I posted my own modest experiment with rack gear programming a couple months ago in another thread, but here it is again, using one of the pull-back motors for power. Edited January 24, 2014 by majorna Quote
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