Pi-Zor: a bitcoin cold wallet

The is a case for the Raspberry Pi that is intended to be used as a Bitcoin hardware cold wallet. Note that this will never be as secure as a wallet using a secure element, like a Ledger Nano. The project's namesake, the Trezor, doesn't have a secure element, but is still more secure since its designed by security minded professionals, rather than a DIY project using a Pi Zero. The plus side, is you build it yourself so you know what's in there, and if you take precautions, then you can probably keep this secure.

See my first explorations into this concept here: http://www.allaboutjake.com/pi-offline-crypto-wallet/

I am currently working on software for the Pi to expose an Electrum wallet on the Pi using the a menuing system on the LCD. This will include the signing of transactions using the QR codes and the PiCamera for input and the LCD for output.

If you find this useful, or you'd like to donate to the future development of this system, send some satoshi to the following address: 1PqvzEtDcboQYF2yhMvcdzK3J6uj7SMtQQ

Bill of materials

• Raspberry Pi Zero (I'm using a W for development, but a non-W is better for a cold wallet)
• 1.44 ST7735 based LCD: http://r.ebay.com/b7ZpxI
• 5-Way Tactile Switch: http://r.ebay.com/U5YHC6
• 5MP Pi Camera: http://r.ebay.com/igagFy
• 30AWG wire wrap wire (its a tight fit, so I used thin wire)
• Screws (M2.5x12 for the outside, M2.5x4 for the Pi inside.)