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firmware 040000
src 040000
LICENSE.circuitpython.md 100644 1.09kB
LICENSE.md 100644 1.3kB
LICENSE.trezor.md 100644 1.11kB
Makefile 100644 529B
README.md 100644 1.91kB
gitignore 100644 169B
README.md
## General ____________ ### Author * Josh McIntyre ### Website * jmcintyre.net ### Overview * uBitAddr is an offline Bitcoin address generator for microcontroller platforms ## Development ________________ ### Git Workflow * master for releases (merge development) * development for bugfixes and new features ### Building (Python and Prebuilt Firmware) * make build Build the application * make clean Clean the build directory ### Building Custom CircuitPython * Full CircuitPython source is not included in this repo for brevity/ease of reading source * To build the custom distribution, clone CircuitPython and checkout branch 4.1.x * Copy the source in src/module to the matching folders in CircuitPython * Follow the CircuitPython build instructions for M4 boards (ItsyBitsy M4, Grand Central M4, Metro M4) ### Features * Generate a random Bitcoin private key (WIF format) and address (Legacy format) * Display the address and private key on a character LCD screen, rotating every 30 seconds * Print the address and private key via a thermal receipt printer ### Requirements * Requires CircuitPython with custom BitAddr module ### Platforms * Adafruit M4 microcontrollers (ItsyBitsy M4, Grand Central M4, Metro M4) ## Usage ____________ ### Firmware installation * Double tap the reset button on the board when connected to a computer via USB * Drag the appropriate firmware file (.uf2) for the desired board to the filesystem * Wait for board to restart automatically ### Peripheral installation * Wire up the desired output - currently supports a character LCD with I2C backpack, thermal receipt printer, or output to PC via USB cable (no accessories needed) ### Code installation * Edit "code.py" to init uBitAddr class with desired output * Copy "code.py" to CIRCUITPY directory ### General usage * Once the code is loaded, restart the board to automatically generate and output an address