The LED drawing machine that you see here is a 2-axis device that does wonders when coupled with time-lapse photography. In Chris McDonald’s (the inventor) own words, “Gertrude uses two stepper motors to move an LED in a very high resolution x/y plane. The movement of the LED is photographed using exposures usually between 30 and 90 seconds. Gertrude can either be programmed to “print” a design automatically or controlled live via a joystick.” Sounds deep, dude.

Tags: speaker, tests, Ogg Vorbis, gizmos