
How to build your own hardware wallet using a Raspberry Pi Tutorial by OneKey founder @ohyishi: 1. Materials: Raspberry Pi Zero 2 + 1.3-inch OLED screen (cost: only $40–60) 2. Firmware: @OneKey open-source firmware, compile it yourself 3. Recovery phrase is generated by the device’s chip—no contact with a computer Tutorial website 👉 https://t.co/pStfF9JCQ0 #HardwareWallet

