Modular controller

.....

Concept

TODO: Fill in this section .....

System components

• PCBAs
  • Main board
  • Button board
  • User interface board
• Firmware

Projects using these components

Mine

• Arcade controller

Other peoples

None yet :(

I²C addresses

I²C address	Device
0x38	PCF8574 GPIO expander driving the LCD
0x39	PCF8574 GPIO expander on button board 1
0x3A	PCF8574 GPIO expander on button board 2
0x3B	PCF8574 GPIO expander on button board 3
0x3C	PCF8574 GPIO expander on button board 4
0x3D	PCF8574 GPIO expander on button board 5
0x3E	PCF8574 GPIO expander on button board 6
0x3F	PCF8574 GPIO expander on button board 7
????	??????? EEPROM

All I²C addresses are specified in 7-bit format (i.e. the read/write bit is not considered part of the address).