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I like to work on multiple robots at one time (it gives me time to plan features/programming for the other robots.) This little bot is a quick build on a single CD with a minimum of everything! I ran out of double sided foam tape so nursing tape works (just not as well). The bot is autonomous and drive by a Uno32 in Arduino C/C++ "sketch" mode (one of my current favorite ways of programming bots.) I didn't have a lot of room for a H-Bridge (L293) chip so each motor is being driven off 2 2N3904 transistors ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/baby-bot-1