DIY Hardware Wallets, Part II:
There are two important categories of DIY hardware wallets that you can build from general-purpose electronic devices: the ones that run a ported firmware (a group of coders make a well-tested software available on more common hardware), and the ones that run original code.
DIY Hardware Wallets, Part I: Building Your Own Trezor One, Model T and BitBox02
We are living in the golden age of DIY hardware. Thanks to advancements in microprocessing and production/distribution, today we can purchase tiny yet powerful computers at surprisingly affordable prices – and then use them to perform surprisingly-complex tasks