Your build

Which device do you want to build?

You can change this later. The guide only shows the steps for the one you pick.

Classic on a Raspberry PiA Raspberry Pi Zero 2 W with a 1.3-inch screen and joystick on top, running the open-source OneKey Classic firmware. Plugs into your computer with one USB cable. No soldering.About$38–$57TimeAbout 5 hoursSkillCopy and pastePro on a Raspberry Pi with a touchscreenNot ready yetThe OneKey Pro firmware with its colour touch interface, on a Raspberry Pi 4 or 5 with a portrait touchscreen.The Pro firmware can't be built for a Raspberry Pi from its current code, and the older version that can be built makes predictable random numbers. This build will be added once both are fixed.On an ESP32 boardNot ready yetA small ESP32-S3 board with a built-in screen, under $30.Neither OneKey firmware runs on ESP32 chips today; it needs to be ported first.

What to buy

Tick what you already own. Prices are typical US prices and change often.

Raspberry Pi Zero 2 WH
The computer inside your wallet. Get the WH version: the H means the pin header is already soldered on. A plain Zero 2 W needs a header soldered on.
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$15–$22I have this
Waveshare 1.3inch OLED HAT
Screen and buttons: 128×64 pixels, the same as the OneKey Classic, plus a joystick and three keys. Make sure it says OLED, not LCD.
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$11–$16I have this
microSD card, 16 or 32 GB
Holds the Pi's operating system and your wallet. Any well-known brand.
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$7–$10I have this
Micro-USB data cable
Connects the wallet to your computer and powers it. Pick one whose other end fits your computer (USB-A or USB-C). It must carry data; some cheap cables only charge.
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$5–$9I have this
microSD card readerOptional
Only if your computer has no card slot. Needed once, to put the operating system on the card.
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$6–$10I have this
Pi Zero case with room for a HATOptional
Protects the boards. Check the listing says it fits a HAT on top.
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$6–$12I have this

Estimated cost for what you still need$38–$57

What should it do?

Leave these as they are if you are not sure. Each one changes a few commands in the guide.

Bitcoin onlyLeaves out every other coin. Less code on the device means less to trust and less that can go wrong.
Forget the wallet when unpluggedNothing is saved on the memory card. Each time you plug in, you enter your recovery phrase again. Safer if the device is stolen, slower to use.

Which computer will you use?

You need it for one evening, to prepare the memory card and compile the app. Compiling the app needs macOS or Linux for now.

macOSWindowsLinux

Start the guide

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