Raspberry Pi LCD 16x2 Display Module Electronic Components Electronic Hobby Kit

Liquid Crystal Display (LCD) is widely used in various electronics’ applications. It is commonly used in various systems to show different status and parameters. LCD16x2 has 2 lines with 16 characters in each line. Each character is made up of 5x8 (column x row) pixel matrix. First two pins of LCD16x2 are used for ground and supply (+5 V). Pin 3 - VEE pin This pin is used for adjusting the contrast of the display. Voltage on this pin defines contrast on display, lower the voltage, higher the contrast. We can connect 4.7 k pot for contrast adjustment or simply connect this pin to ground to get maximum contrast. Pin 4 –RS: Register Select pin RS = 0: Data on the D0 to D7 pins is considered as a command. RS = 1: Data on the D0 to D7 pins is considered as data to display on LCD16x2. Pin 5 – RW: Read / Write pin RW = 0: Write data to the LCD RW = 1: Read data from the LCD Pin 6 –E: Enable This pin is used to latch the data present on the data pins D0 to D7. High to low pulse with a minimum width of 450 ns is required to latch the data to the display. Pins 7:14 - DATA pins D0 to D7 Data pins are used to send data/command to the LCD16x2 as parallel 8 data bits. Pin 15:16 - LED + and LED - Liquid Crystal Displays don’t have their own light like seven segment displays. Therefore, the module has a backlight LED. Supply to this LED is provided through these pins.