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5PCS IIC I2C Serial Interface Board LCD1602 LCD2004 Blue Backlight LCD Display Adapter Plate PCF8574 Expansion Board for Arduino UNO R3 MEGA DIY Kit
Description
- About this item
- 1.The I2C 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 bidirectional buses (I2C). The device includes an 8-bit quasi-bidirectional 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 through the jumper cap. The original LCD1602/2004 screen requires 7 IO ports to drive. This module only needs 2 IO ports to drive, which can save you 5 IO ports.
5PCS IIC I2C Serial Interface Board LCD1602 LCD2004 Blue Backlight LCD Display Adapter Plate PCF8574 Expansion Board for Arduino UNO R3 MEGA DIY Kit
Reviews
W**Y
Makes character displays easy to interface
I have already used two of these that I purchased earlier on two other projects. I have a water valve control project that will need at least one more display but I ordered the five pack so I would have extras. I am always needing a debug display of some kind usually on the fly during project development. Any way, these are great, Just load and initialize the liquidCrystaiI2c library and you are set to go.
A**R
Good serial interface board
So far all the boards are working fine.
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