One-Ton Linear Servo

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RC hobby servomotors were just made for hacking. What’s not obvious is how much you can hack them — with a few tricks, you can use a servo to control almost anything. Hobby servos consist of a DC gear motor, a potentiometer (usually 5K), and a control circuit. The output... Read more »

Super-Simple Audio Cellbot

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Celljoust! What is a cellbot? A cellbot is a small robot using a smartphone as the brain. They can be autonomous or remotely controlled over the Internet. There are many different types of cellbots, but they typically share the following features: Small; around 6 in. square, less then 1 lb.... Read more »

Belvedere – A Butler Robot

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Belvedere is a robot I designed and built to serve appetizers at parties and entertain with jokes and dancing. He has the ability to navigate the first floor of our house while avoiding obstacles. Belvedere’s first job assignment was entertaining guests at our son’s first birthday! His main body sits... Read more »