This shield consists of three logical parts: - 1602LCD with HD4780 Dot Matrix Liquid Crystal Display Controller/Driver. - 6 button keypad. - Analog pins, 5V and GND pass through. Additional ...

The SCL pin is responsible to send clock signal in order to synchronize data transfer between the arduino and the slaves. So, basically I2C is just SPI communication with a total of UART cable (only ...

LCD, Keypad, Enclosure Expansion Arduino Shield (video) 9:57 am March 6, 2015 By Julian Horsey ...