GarabatoBOT (DoodleBOT)

thingiverse

GarabatoBOT, or DoodleBOT in English, is a compact robot that can create basic drawings on whiteboards. It features a straightforward design: two stepper motors with their driver PCBs, an Atmega328 microcontroller, and a Bluetooth module for wireless control. Two ropes connect the upper corners to pulleys, which gather the rope as the motors turn. The structure comprises five components: a main body, two arms, and two pulleys. Inside the grey bag is a 2s-1A battery, also used to balance the center of gravity. Watch the robot in action at http://youtu.be/J-kkD-Yr6cY?hd=1, and learn more on the blog at http://madebyfrutos.wordpress.com/2012/03/25/proyecto-de-mig-3/ (http://aerobotclubderobticadeaeronuticos.blogspot.com.es/) by Miguel Ángel de Frutos. To assemble, print the parts, mount the structure, add motors and electronics, obtain slim rope, and tie it to the whiteboard corners.