No content found

One-Ton Linear Servo


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


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


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 »

Pole-Mounted Aerial Photography Rig


Sometimes nothing is as important as perspective. My goal in photography is often to find a view no one else has found, to be able to see things from unusual and insightful vantage points. The most practical way to obtain the elusive aerial perspective is by attaching a camera to... Read more »