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Spotted on the MAKE Flickr pool, this Arduino-controlled two-servo walker, demo'd at the recent Dorkbot Bristol. Looking at the images close up, you can see this is an insta-bot, made with just the two servos, some coat hanger, and zip ties.
Dorkbot Bristol, December 2008
Related:
Speaking of servomotors, Solarbotics has just released some sweet-looking tiny (22.8x9.5x19.8 mm, 0.90x0.37x0.78 in) "pico servos." Only $16 each.
The GWS PICO+ servo (GWSPIC+F/BB/F) has a ball-bearing supported output shaft, and a Futaba connector (great for connecting to microcontrollers!). It comes complete in a blister pack containing all mounting hardware and servo output arm options.
That thing is maybe smaller than it looks.
The wire is 1.2mm steel MIG wire, and the servos are these tiny (and cheap) things:
http://www.servoshop.co.uk/index.php?pid=STECENERG&area=Servo
Zip ties were not enough to hold the horizontal axis together, so I resorted to glue-gunning the arm of one servo onto the side of another.
But, it did walk, and it could even (just about) go round corners, or at least big curves. I wasn't sure it would even do that with only two servos. Maybe I'll try three next time.
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