Is it possible use the LCD on every pin, and change the speed of the I2C software bus, by the "Testato_SoftI2CMaster" library. "Testato_SoftI2CMaster" library need to be installed also if you want use ...

PCF8574+HD44780 LCD I2C Arduino Library. Library for PCF8574 Breakout Board by Testato on ArduinoForum, based on code from Mario H. You can see in the picture I2C_LCD_Breakoutboard.jpg the board ...

Only two wires can be used from the microcontroller while the I2C bus can handle up to seven I2C LCD interfaces. An Arduino, Microchip PIC or any microcontroller with built-in or bit-banged I2C ...

Next steps shows how the master (Arduino) reads from the slave I2C device. Wire.requestFrom(address, 1) command expects to receive 1 byte of data from the TC74 sensor. Wire.available() waits for data ...