Pin4 (RS/Register Select/Control Pin): This pin toggles among command or data register, used to connect a microcontroller unit pin and obtains either 0 or 1(0 = data mode, and 1 = command mode). Pin3 (V0/VEE/Control Pin): This pin regulates the difference of the display, used to connect a changeable POT that can supply 0 to 5V. Pin2 (VCC/VDD/Source Pin): This is the voltage supply pin of the display, used to connect the supply pin of the power source. Pin1 (VSS/Ground): This is a GND pin of display, used to connect the GND terminal of the microcontroller unit or power source. LCD 16×2 Pin Diagram The 16×2 LCD pinout is shown below. Now in the 14 pins there are 8 data pins (7-14 or D0-D7), 2 power supply pins (1&2 or VSS&VDD or GND&+5v), 3rd pin for contrast control (VEE-controls how thick the characters should be shown), and 3 control pins (RS&RW&E). One can power or leave the back light pins. In 16×2 LCD there are 16 pins over all if there is a back light, if there is no back light there will be 14 pins. Working with both 8-bit and 4-bit mode.Each character is built by a 5×8-pixel dots.Consists of two rows and each row print 16 characters.Alphanumeric LCD display (alphabets, number, special characters).So, it will have 16×2 = 32 characters in total and each character will be made of 5×8 Pixel Dots. There are a lot of combinations available like 8×1, 8×2, 10×2, 16×1, etc. 16×2 LCD is named so because it has 16 Columns and 2 Rows. This tutorial we build two projects with arduino board firstly interface with simple LCD module and secondly interface with LCD I2C Module respectively. In normal development boards interfacing LCD to a ARDUINO is quite easy with circuit and code.
Arduino lcd library license how to#
Now, we are learning how to Interface LCD to Arduino and display text characters on LCD screen. LCD’s are generally used as a display in many applications as they are easy to use then seven segment displays. To developing a good communication between machines and human beings, display units play an important role of embedded systems.
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