It’s a simple robot that drags a pen around to draw on paper ... The robot does a good job of plotting out a drawing on a small scale, with [Tim] using it to outline his name on paper.

The BrachiGraph project consists out of two parts, the hardware design for a servo-driven drawing arm (pen plotter) and software utilities (written in Python) that allow the drawing arm’s servos ...

Remember: the top of this second leg and arm will be hidden by the dinosaur’s body. The second leg and arm are only partly visible, as highlighted in this drawing 13. Carefully erase all of the pencil ...