BrachioGraph, an easy-to-build pen-plotter, driven by Python
BrachioGraph, an easy-to-build pen-plotter, driven by Python launched on November 13, 2019 with 63 votes, #663 of 3,203 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 6 years on.
In plain words
BrachioGraph is a pen-plotter that users can build themselves and control using Python code. Launched in 2019, it allows developers and makers to create physical drawings by writing software. The project combines hardware construction with Python programming, making it accessible to those interested in both robotics and coding. It appeals to anyone wanting to explore the intersection of digital code and physical output through a DIY approach.
written from the facts on this page · September 2026
From the sources
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. This documentation uses the Diátaxis documentation structure . The Tutorial takes you step-by-step through the process of building the machine, installing the software and making your first drawings. How-to…from brachiograph.art
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