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Well I've started work on a new robot, with size in mind. It's setup is somewhat similar to the "start here" bot, but it's actually got a chassis and something to cover up the electronics. Hopefully the only wires we'll see on this bot is the wires from the Sharp sensor. (This info is now out of date: I can now reveal the chassis is transparent, so we can look at the guts!) I haven't actually got the parts yet, but I've designed it and made a Cad: Yes, the Sharp sensor DOESN'T look ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/mini-machine