The PCF8574 is an essential IC for interfacing parallel pins of LCD 2x16 to sda and scl of i2C.
Please advise if any I2C lcds and as well as pcf8574 itself. It is a vey useful device and can expand the arduino pin .
Base i2c address of PCF8574 is either 20H or 38H.
Pini Shachar- Electronics and software teacher
Nir Haemek school -VIZO- Afula-Israel