DIY Hardware Wallet Workshop

Old version of the workshop docs is in the v1 folder

Slides

Required hardware

• 32F469I-Discovery dev board from ST Microelectronics from any electronics store like Mouser, Digikey, Aliexpress, Waveshare
• SD card (16 GB works for sure)

Quick start

1. Register on mbed.com
2. Add hardware to your compiler here
3. Import the workshop template
4. Complete the TODO list
5. Or check out the complited version
6. Start playing with it and Bitcoin Core using command line interface or this simple web interface

Useful notes and references

Libraries for microcontrollers worth mentioning:

• littlevgl - nice graphics library for embedded systems
• qrcode library

Theory:

• mnemonics - bip39
• HD keys - bip32
• Derivation pathes for legacy and nested and native segwit
• Partially signed transaction format - bip174

Iteresting platforms and devboards:

• list of mbed-compatible boards
• 32-bit boards from Adafruit
• ESP-32 boards from M5Stack
• RISC-V dev boards

Languages and frameworks:

• ARM Mbed ( C++ )
• Arduino ( C++ )
• Micropython
• Circuit Python
• Embedded Rust
• Tock OS

Bitcoin libraries:

• micro-bitcoin
• trezor-crypto
• secp256k1 from Bitcoin Core
• libwally and esp32 demo