Bill Badge
MysteryH4ck Bill Cipher Badge 36c3
Links & Tools
Arduino IDE (required): https://www.arduino.cc/en/Main/Software
Attiny85 Core (required): https://github.com/SpenceKonde/ATTinyCore
Arduino IR library (optional): https://github.com/z3t0/Arduino-IRremote
Tiny IR library (optional): https://gist.github.com/SeeJayDee/caa9b5cc29246df44e45b8e7d1b1cdc5
Setup & Compilation
Install Attiny85 Core, edit ...\packages\ATTinyCore\hardware\avr\1.3.2\variants\tinyX5\pins_arduino.h
and change line 108 to #define TIMER_TO_USE_FOR_MILLIS 1.
Under tools select:
Board: "ATtiny25/45/85"Chip: "ATtiny85"Clock: "16 MHz (PLL)"B.O.D. Level: "B.O.D Disabled"Save EEPROM: "EEPROM retained"Timer 1 Clock: "64MHz"LTO(1.6.11+ only): "Enabled"millis()/micros(): "Enabled"
Fuses:
AVRDUDE -U lfuse:w:0xD1:m -U hfuse:w:0x5F:m
- LFUSE=D1
- HFUSE=5F
- EFUSE=FF
Fuse calculator: http://eleccelerator.com/fusecalc/fusecalc.php?chip=attiny85
Pinout
Arduino Nano Prototype
| Function | AVR Pin | Arduino Pin |
|---|---|---|
| Button | PD6 | D6 |
| IR Send | PD3 | D3 |
| IR Receive | PD7 | D7 |
| LED R | PB3 | D11 |
| LED G | PB2 | D10 |
| LED B | PB1 | D9 |
Attiny85 Badge
| Function | AVR Pin | Arduino Pin | Physical Pin |
|---|---|---|---|
| Button | PB5 | D5 | 1 |
| IR Send | PB1 | D1 | 6 |
| IR Receive | PB2 | D2 | 7 |
| LED R | PB4 | D4 | 3 |
| LED G | PB3 | D3 | 2 |
| LED B | PB0 | D0 | 5 |
PCB Designs
Attiny85 fuse burner: https://easyeda.com/spacehuhn/attinyrescue
Bill badge prototype with Arduino Nano: https://easyeda.com/Spacehuhn/projectbill-prototype
Attiny85 Programmer: https://easyeda.com/Spacehuhn/attinyprogrammer
Final Badge Design: Somewhere here https://github.com/MysteryHack