Here is an updated schematic of MYS 1.1 with I2C(A4/A5) added on port J4, SPI on header J8 and a footprint for a 24LCxxx eeprom.
Here is an updated schematic of MYS 1.1 with I2C(A4/A5) added on port J4, SPI on header J8 and a footprint for a 24LCxxx eeprom.