![]() Wiring I2C Module to Arduino MEGA2560 Board Wiring I2C Module to Arduino UNO R3 Board The board has a tripper pot to adjust the contrast of the LCD, and the jumper located at the opposite side allows the back-light controlled by the program or remain off.īy default the module is configured with the address 0x27, but you can change this using the address pins A0, A1 and A2 located at I2C module board, see the table below. On this I2C module you can control an LCD with ease using 2 wires connected to your Arduino board via input SDA and the SCL see the illustration below to find the correct pin where you can connect your I2C module.Īt the left side of the module we have 4 pins, and two are voltage and ground, and the other two are the I2c (SDA/ and SCL). In this illustration we will going to wire the I2C or 2 wire connection in our Aruduino Board with the 16×2 Liquid Crystal Display, you can also use the 20×4 LCD, but on this demonstration we will going to wire the 16×2 LCD.
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