PCF8574 擴展板 IIC/I2C 擴展 LCD1602 & LCD2004 液晶螢幕轉接板

描述

PCF8574 擴展板 IIC/I2C 擴展 LCD1602 & LCD2004 液晶螢幕轉接板

PCF8574 擴展板 IIC/I2C接口LCD1602轉接板 不含LCD屏，控制板IO口只有20個，加些傳感器、SD卡啥的，繼電器等模塊多了，IO口就不夠用了，原來的1602屏需要7個IO口才能驅動起來，我們開發的這個模塊可以幫你省5個IO口。

This is another great IIC/I2C/TWI/SPI Serial Interface.
As the pin resources of 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. It is fantastic for Arduino based project.