DIY Bitcoin Hardware Wallet with Touchscreen & QR Scanner in Micropython

Run Unittests

# Build unix firmware
./make_unix.sh

# Run unittests in unix firmware
./run_tests.sh

TODO

Python
- Bitcoin
  - ECC
    - Use bytes internally, not integers
  - PSBT
    - Only support segwit
    - Unoptimized first version, then decrease memory footprint
  - HD wallets
- Device
  - Serial driver
  - QR driver
  - Display driver (most work is on the C side)
- Libwally?
  - We have a gen_mpy branch that attempted to auto-generate micropython bindings for libwally using this approach. It seemed very complex so we decided to postpone for now, but it should be attempted again in the future.