I have taught intro to physical computing (microcontrollers) on a number of platforms over the years and am always looking for the optimal, extremely cheap, platform. Now that I am doing workshops at the Rockville Makerspace the search has renewed. To scratch a long term itch I decided to create a board that best met my interests instead of just buying some.

With help from BoB LeSuer (ibib.us) and especially Tim Giles  (wildcircuits), a prototype Cobble board has been created. It is based around the ESP32-S3 “supermini.” We are mounting that to a carrier board with additional sensors and a flexible set of connectors for expansion.

I am planning to have a first run of production boards done by my first class at Rockville Makerspace on 12/14/2026.

The root page for this project is cobble.tinkerfarm.net, which links out to all information about the board and the project.