I2C Serial Interface Board LCD1602 LCD2004 Adapter PCF8574 Arduino 5 PCS For Sale
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C interface is a huge improvement, freeing up a lot of pins on the Arduino for additional functionality. Works fine with the LCD1602 and LCD2004.
Modules can be cascaded up to eight. The device address can be modified by short-circuiting A0/A1/A2. The default address is 0x27. The default address can be detected by the program.
The module uses the PCF8574, which enables most MCUs to implement remote I/O port expansion via two offerirectional buses (I2C). The device includes an 8-bit quasi-offerirectional port and an I2C bus interface.
The contrast is adjustable, and the blue potentiometer is rotated clockwise to enhance, and counterclockwise to weaken.With backlight power control, you can set whether to connect the backlight power t
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