BrachioGraph - the cheapest, simplest possible pen-plotter¶

BrachioGraph - arm-writer - is an easy-to-build pen-plotter, driven by a library of simple Python applications.

The hardware¶ The plotter is made of: two sticks

a pen or pencil

a clothes-peg

3 servo motors

a Raspberry Pi, to drive the servos and run the custom code

glue Total cost: ~€14