The world’s cheapest, simplest possible pen-plotter.Share on Twitter Follow @BrachioGraph
BrachioGraph - arm-writer - is an easy-to-build pen-plotter, driven by a library of simple Python applications.
BrachioGraph plots cheerful, low-fi drawings, and can produce robotic sketches using a variety of drawing implements.
A BrachioGraph can be built for about €15 in an hour or so, using a Raspberry Pi computer, hobby servo motors and household items. The BrachioGraph library is published on GitHub and includes simple Python code to drive the plotter and vectorise bit-map images.
From bitmap to plot via vectorisation#
The BrachioGraph community#
BrachioGraph benefits from contributions from the open-source community, and independently-created community resources. These include videos, brachio.me, a web version of the linedraw software used to vectorise images and 3D printed plotter components.
About the documentation#
This documentation uses the Diátaxis documentation structure