Coffee-EEPROM-FAP

Articles

• Vendors Still Allow You to Hack Their Vending Machine

Features

• Read credit on load
• Press -> right, set credit to 10 EUR
• Press . center, dump the EEPROM to serial (USB connected, log mode ON)
• Press <- left, erase the EEPROM

Flipper Prototyping Board Schematic

• SDA -> Pin 15
• SCL -> Pin 16
• VCC (3.3V) -> Pin 9
• GND -> Pin 18

Provide two 4k7 ohms Pull-Up resistors from SDA to VCC and one from SCL to VCC

The upper 6 pins male header is not required (unless you want to use the PicKit2 either)

PicKit2 Schematic

Demo

TODO

• Write .bin dump loaded from file
• Set any amount (see CoffeeEditor)
• Threads for better UX (ex loading bar)

Disclaimer

I am not responsible for any illegal use of this tool. Edit the credit is like stealing.