Patchouli
Arbitrary-sized open hardware EM pen products
Patchouli is an open-source electro-magnetic drawing tablet hardware implementation, including a coil array, an RF front end built using commercially available parts, and digital signal processing algorithms. The design is compatible with most commercial pens from different vendors, offering an ultra-low-latency pen input experience for your customized hardware projects. The hardware is released under the CERN-OHL-S license, and the firmware/simulation code is released under the GPL3+ license.
- The project's own website: https://patchouli.readthedocs.io
This project was funded through the NGI0 Core Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 101092990.
