Connect and create your wallet

Plug it in

Connect the Pi’s USB port (the middle one) to your computer with the data cable. After about a minute the screen shows Select Language.

Open the app you built and choose Connect hardware wallet, then USB. If a list of devices appears, choose DIY Wallet. The app recognises it as a OneKey Classic and walks you through setup.

Create your recovery phrase on the device

Follow the device’s screen. In short:

1. Choose your language and go through the welcome screens.
2. Choose Create New Wallet, then the number of words. 12 is enough.
3. The device shows your words one at a time. Write each one on paper, in order. Never type them into a computer or take a photo of them.
4. Confirm the words when the device asks, then choose a PIN.

Choose a long PIN. The device accepts up to 9 digits. Because your wallet is stored on the memory card, a thief who copies the card can try PINs on their own computer. So use all 9, and add a passphrase as described in Keep it safe.

In the app

Once the device is set up, the app finishes adding it. It will not show a “genuine device” confirmation, because your build skips that check. That is expected.

Test with a small amount

Before you trust it with more:

1. In the app, show a receiving address. Check that the address on the device screen matches the app, character by character. The screen is what you trust; the app only shows what the device tells it.
2. Send a small amount to that address from an exchange or another wallet.
3. Send it back out, and confirm the amount and address on the device before you approve.
4. Test a full restore, described in Keep it safe.