16×2 LCDs :
LCD (Liquid Crystal Display) screen is Associate in Nursing electronic show module and realizes a good variety of applications. A 16×2 LCD liquid crystal show LCD digital display alphanumeric display is an extremely basic module and is extremely unremarkably employed in varied devices and circuits. A sixteenx2 LCD liquid crystal show LCD digital display alphanumeric display suggests that it will display 16 characters per line and their area unit two such lines.
A 16×2 LCD liquid crystal show LCD digital display alphanumeric display is an extremely basic module and is extremely unremarkably employed in varied devices and circuits. These modules area unit most popular over seven segments and alternative multi-segment LEDs. A sixteenx2 LCD liquid crystal show LCD digital display alphanumeric display suggests that it will display 16 characters per line and their area unit two such lines. during this digital display, every character is displayed in a 5×7 pel matrix.
Interfacing crystal rectifier with Microcontroller Pin. The on top of the image is that the straightforward manner of interfacing Associate in Nursing crystal rectifier with a microcontroller. The anode is connected to the microcontroller and cathode is connected to ground through an electrical device.
16X2 LCD pinout diagram
|SL no.||Advertisement Function||Name|
|02||Supply voltage: 5V (4.7V – 5.3V)||Vcc|
|03||Contrast adjustment; the best way is to use a variable resistor, such as a potentiometer.||Vo / VEE|
|04||Selects command register when low, and data register when high||RS (Register Select )|
|05||Low to write to the register: High to read from the register||Read/write|
|06||Sends data to data pins
when a high to low pulse is given
Extra voltage push is required to
execute the instruction and
EN(enable) signal is used
for this purpose.
|07||8-bit data pins||DB0|
|08||8-bit data pins||DB1|
|09||8-bit data pins||DB2|
|10||8-bit data pins||DB3|
|11||8-bit data pins||DB4|
|12||8-bit data pins||DB5|
|13||8-bit data pins||DB6|
|14||8-bit data pins||DB7|
|15||Backlight VCC (5V)||Led+|
|16||Backlight Ground (0V)||Led-|
Required Parts :
- Arduino Uno Board —— —— [Ali Express]
- Project Board & Jump Waire —– —— [Ali Express]
- 16*2 LCD Display —– —— ——- [Ali Express]
First, we want to modify the header file (‘#include ’), this header file has directions written in it, that allows the user to interface Associate in Nursing LCD to UNO in the four-bit mode with none fuzz. With this header file, we want not got to send knowledge to LCD bit by bit, this can all be taken care of and that we don’t get to write a program for causation knowledge or a command to LCD bit by bit.
Second, we want to inform the board which kind of LCD we tend to area unit mistreatment here. Since we’ve got numerous differing kinds of LCD (like 20×4, 16×2, 16×1 etc.). Here we tend to area unit getting to interface a 16×2 LCD to the UNO thus we tend to get ‘lcd.begin(16, 2);’. For 16×1 we tend to get ‘lcd.begin(16, 1);
How it is Work :
The ARDUINO IDE permits the user to use LCD in four-bit mode. this sort of communication permits the user to decrease the pin usage on ARDUINO, not like different the ARDUINO needn’t be programmed on an individual basis for mistreatment it in four its mode as a result of by default the ARDUINO is about up to speak in four-bit mode. within the circuit, you’ll see we’ve got used 4bit communication (D4-D7).
In this instruction, we tend to area unit getting to tell the board wherever we tend to connected the pins. The pins that area unit connected ought to be painted so as “RS, En, D4, D5, D6, D7”. These pins area unit to be painted properly. Since we’ve got connected RS to PIN0 so on as shown within the circuit diagram, we tend to represent the personal identification number to board as “LiquidCrystal LCD(13,12,5,4,3,2); the info that has to be displayed in LCD ought to be written as “LCD.print(“www.arduinotricks.com“); With this command, the LCD displays ‘www.arduinotricks.com’.