The I2C (Inter-Integrated Circuit) bus is a synchronous serial communication protocol that allows multiple electronic components ...

Arduino library for the I2C LCD display, typical 20x4 characters. The library is inspired by the excellent New-LiquidCrystal ...

Assume that you are moving towards a complex microcontroller project bundled with blinkers, beepers, and a display panel.

As you can see in the schematic all three TC74 sensors have their SDA and SCL pins connected in series to pin A4 and A5 on the Arduino board. The two 4.7K pull-up resistors must be used when using I2C ...

If you use the Arduino IDE to program the ESP32, you might be interested in [Andreas Spiess’] latest video (see below).

The most difference to the original LiquidCrystal library from Arduino is that this library supports printf() functionality.