PassBoard
A poormans Yubi key with an Arduino Pro micro
The PasscodeBoard.ino file is for the Arduino pro micro. (or any ATMEGA-32U4 microcontroller) And the DigiSpark_passcode.ino is for the DigiSpark microcontroller by digistump based on the ATtiny85. the Gerbers folder contains the files i sent to Osh park to get the PCB printed.