Grand Idea Studio is a product design, development, and licensing firm with a focus on consumer devices and open source modules for electronics hobbyists. It is run by computer engineer and hardware hacker Joe Grand.
A fully open source dual-channel SDR Raspberry Pi HAT with a tuning range up to 6 GHz
An ARM board that fits inside your USB connector
Exquisite printed circuit boards that bring to life Forrest Mims' vintage designs from "Getting Started in Electronics."