Description
Commercially available LCD display modules like 16×2 LCD display and 20×4 LCD display are great to be used with a microcontroller like Arduino, Raspberry Pi, PIC, etc. to display the data but a standard 16×2 LCD even when operating at 4-bit mode takes about 8 GPIO pins from the microcontroller to display information on it and in the projects where GPIO pins are at a premium, it is a lot. That is why we need a serial to parallel data adapter so that we can reduce the number of pins needed to drive the LCD display modules. This LCD I2C adapter module is designed to fit directly below the standard 16×2 LCD display. Then through this module, the LCD can communicate through I2C protocol which requires only 2 pins from the controller side and then uses the PCF8574 IC to receive data from I2C and display them on the LCD screen. It can be used to drive Robotics projects, 3D printer, Quadcopters, etc.
Specification
- 5V power supply
- Serial I2C control of LCD display using PCF8574
- Backlight of the LCD display can be enabled or disabled via a jumper on the board
- Contrast of the LCD screen control via a potentiometer
- Can have 8 modules on a single I2C bus (change address via solder jumpers)
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