IIC/I2C/Interface LCD1602 adapter board function library LCD2004 adapter board PCF8574 expansion board

1602 I2C interface 4-wire 1602 screen

IIC/I2C interface LCD1602 adapter board without LCD screen

There are only 20 IO ports on the control board. If there are more sensors, SD cards and other modules, the IO ports will not be enough,

The original 1602 screen needs 7 IO ports to drive. The module we developed can save you 5 IO ports. We send the function library

Product parameters:

1. Size: 41.5mm (length) * 19mm (width) * 15.3mm (height)

2. Weight: 5g

3.PCB Color: Black

4. Supply voltage: 2.5-6V

5. Support I2C protocol

6. With backlight power control, you can set whether to connect the backlight power through the jumper cap. Plug in the jumper cap to connect the backlight power supply, unplug the jumper cap to disconnect the backlight power supply

7. Contrast adjustable, rotating blue potentiometer, clockwise enhancement, counterclockwise weakening. The potentiometer is designed on the front, which is convenient for customers to adjust freely anytime and anywhere

8. Modules can be cascaded, and more than 8 can be cascaded. Modify the device address by shorting A0/A1/A2.

I2C adapter board default address is 0x27