If you’ve got an Arduino, a few passive components, and a SSD1306 OLED, then [mircemk] might have ... the two displays don’t have conflicting I2C addresses, he decided to simply duplicate ...

The I2C bus or TWI (Two Wire Interface) allows a single master IC to share communication lines with multiple slave ICs. In our case Arduino is the master and 3 x TC74 sensors are the slaves. As you ...