ESP8266-Firmware/Readme.md

265 B

Documentation

1.0 Keypad

The kepad is driven by an io-expander. Thus it can be acessed over i2c. Adress 0x21

1.1 Wiring

  • Red: 3.3V
  • Black GND
  • Green SDA -> D3
  • Grey SCL -> D4

2.0 LCD

The LCD display is driven on the same i2c bus as the keypad.