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 ...

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 ...