IIC I2C TWI SPI Serial Interface Board
[embedyt] https://www.youtube.com/watch?v=h7IhjwcOAlQ[/embedyt]
[embedyt] https://www.youtube.com/watch?v=Wj_BBSsfNRg[/embedyt]
As the pin resources FOR Arduino controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card.
However, with this I2C interface module, you will be able to realize data display via only 2 wires. If you already has I2C devices in your project, this LCD module actually cost no more resources at all.
I2C Address: 0X20~0X27 (the original address is 0X20,you can change it yourself)
Supply voltage: 5V
the backlight and contrast is adjusted by potentiometer
Come with 2 IIC interface, which can be connected by Dupont Line or IIC dedicated cable
Compatible for 1602 LCD 2004 LCD