SADbot (The Seasonally Affected Drawing Robot) is a solar powered, interactive drawing machine for the Eyebeam window gallery in New York City. It uses two 18.5'' x 13'' solar panels to power two stepper motors which allow the control of a pen in two dimensions.

SADbot also takes input from people walking outside, by using a set of sensors which can tell how much light they're getting (photocells) and putting them up against the inside of the window, SADbot knows if someone is covering up one of the sensors, and can change its drawing behavior accordingly.

The window gallery doesn't get any direct sunlight, so we set up an array of mirrors on the roof of Eyebeam to direct sunlight to a fixed mirror hanging off the roof to reflect light down to the solar cells in the gallery window. The solars cells, in turn, power the motors to run the drawing machine.

Some of the components and techniques we're using will go into Dustyn's book, Making Things Move, and everything will be documented and made open to the public. We are using open source platforms as much as we can (Arduino, Processing, Sparkfun's EasyDriver motor boards), so anyone that wants to can make their own SADbot.

Support SADbot on Kickstarter until June 30th:  SADbot was in Eyebeam's gallery from June 10th - July 24th 2010.

SADbot on flickr: here, here, and here (or just search for the tag: sadbot)

Full project documentation in this Instructable and in project 10-3 of the book.

Project Created: 
May 2010