This is small and fast Arduino library for LCD HD44780 and its clones (S6A0069, KS0066U, NT3881D, LC7985, ST7066, SPLC780, WH160xB, AIP31066, GDM200xD). The display operates in 4-bit mode over I²C bus ...
The PCF8574_LH library provides a simple interface for controlling the PCF8574 I/O expander using the I2C communication protocol. It allows you to read and write values to the PCF8574's registers, ...