@Paolo-carrer The OLED Expansion is hardware compatible with the original Omega and Omega2.
The Q1, Q2 FETs are 2.5V-to-3.3V I2C bus level shifters between the original Omega and the OLED display controller.
Q1, Q2 are 3.3V-to-3.3V I2C bus "level shifters" between Omega2 and the OLED display controller.
Omega2 has I2C, SPI and serial interfaces so theoretically you could connect it to any display that has one of these interfaces.
Unfortunately only the OLED Expansion has full (out-of-the-box) Onion software support.
Ok, thanks György
Just for clarity, if I use a 3,3V I2C slave device with Omega2, I not need the two translator fets in addition to pull-up res, right?
Do you know what display controller is inside the OLED Expansion? Or which Manufacturer/model is the OLED module?