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 ...

Necessity is the mother of invention, so he put together this I2C sniffer sketch for Arduino. The arduino will record what is going on for a set time interval, then dump the data via serial as a .csv.

To link a standard 16×2 LCD directly with the microcontroller, for instance Arduino, you would need atleast 6 I/O pins to talk to the LCD. However, if you use an LCD module with I2C interface, you ...