While the SSD1306 OLED has somewhat become the go-to display for up-to-date projects, the good old character ... each LCD via I2C, two TCA9548A I2C multiplexers are connected to an Arduino ...

This allows connection to your Arduino (or other microcontroller) using only four channels. Yippee! Hitachi’s HD44780 based 16×2 character LCD are very cheap and widely available, and is an essential ...