16x4 LCD Display with Green Backlight
16x4 LCD Display with Green Backlight
The 16x4 LCD Display with Green Backlight is a compact, low-power liquid crystal display (LCD) module designed for various applications, including robotics, automation, industrial control systems, and consumer electronics. This display is ideal for displaying alphanumeric characters, symbols, and graphics in a wide range of environments.
The 16x4 LCD Display with Green Backlight is a passive matrix LCD module that operates on a 5x7.dot matrix principle. It is capable of displaying 16 characters per line, with a total of 4 lines, making it suitable for displaying short messages, status updates, and configuration settings. The display is controlled using a standard HD44780U controller/driver, which allows for easy integration with microcontrollers and other electronic devices.
STN (Super-Twist Nematic) LCD
64x32 mm
16 characters per line, 4 lines
45 (Left), 45 (Right), 30 (Up), 30 (Down)
| 5 | 1 (Typical) |
Green LED
5V
30mA (Typical)
| Controller/Driver | HD44780U |
8-bit parallel
Industry-standard HD44780U command set
5V
2mA (Typical)
10mW (Typical)
80x36 mm
12 mm
25g (Approx.)
Through-hole (1.0 mm pitch)
-20C to +70C
-30C to +80C
10% to 90% (Non-condensing)
The display is designed to operate in a wide range of environments, making it suitable for industrial, commercial, and consumer applications.
The green backlight provides high visibility in low-light conditions.
The display is compatible with a wide range of microcontrollers, including Arduino, Raspberry Pi, and ESP32/ESP8266.
The controller/driver is industry-standard, making it easy to find example code and libraries for various programming languages.
| The 16x4 LCD Display with Green Backlight is suitable for a wide range of applications, including |
Industrial control systems
Robotics
Automation systems
Medical devices
Consumer electronics
Home automation systems
IoT projects
16x4 LCD Display With Green Backlight DocumentationOverviewThe 16x4 LCD Display with Green Backlight is a widely used component in IoT projects, providing a cost-effective and efficient way to display information to users. This display module features a 16-character by 4-line LCD display with a green backlight, making it easy to read in various lighting conditions.Pinout and ConnectionsThe 16x4 LCD Display with Green Backlight has a standard 14-pin interface, with the following pinout:| Pin | Function |
| --- | --- |
| 1 | VSS (Ground) |
| 2 | VCC (Power Supply) |
| 3 | VE (Contrast Voltage) |
| 4 | RS (Register Select) |
| 5 | RW (Read/Write) |
| 6 | EN (Enable) |
| 7 | D0 (Data Bit 0) |
| 8 | D1 (Data Bit 1) |
| 9 | D2 (Data Bit 2) |
| 10 | D3 (Data Bit 3) |
| 11 | D4 (Data Bit 4) |
| 12 | D5 (Data Bit 5) |
| 13 | D6 (Data Bit 6) |
| 14 | D7 (Data Bit 7) |Code Examples### Example 1: Basic LCD Initialization and Display (Arduino)This example demonstrates how to initialize the LCD display and display a simple message using an Arduino board.```c
#include <LiquidCrystal.h>// Define LCD pin connections
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;LiquidCrystal_I2C lcd(rs, en, d4, d5, d6, d7);void setup() {
// Initialize the LCD
lcd.begin(16, 4);
lcd.setCursor(0, 0);
lcd.print("Hello, World!");
}void loop() {
// Do nothing, display remains static
}
```### Example 2: Displaying Sensor Data (Raspberry Pi with Python)This example demonstrates how to display sensor data on the LCD display using a Raspberry Pi and Python.```python
import RPi.GPIO as GPIO
import time# Define LCD pin connections
lcd_rs = 25
lcd_en = 24
lcd_d4 = 23
lcd_d5 = 18
lcd_d6 = 15
lcd_d7 = 14# Define sensor pin connection
sensor_pin = 17GPIO.setmode(GPIO.BCM)
GPIO.setup(lcd_rs, GPIO.OUT)
GPIO.setup(lcd_en, GPIO.OUT)
GPIO.setup(lcd_d4, GPIO.OUT)
GPIO.setup(lcd_d5, GPIO.OUT)
GPIO.setup(lcd_d6, GPIO.OUT)
GPIO.setup(lcd_d7, GPIO.OUT)
GPIO.setup(sensor_pin, GPIO.IN)def lcd_init():
# Initialize the LCD
GPIO.output(lcd_rs, GPIO.LOW)
GPIO.output(lcd_en, GPIO.LOW)
time.sleep(0.1)
GPIO.output(lcd_en, GPIO.HIGH)
time.sleep(0.1)
GPIO.output(lcd_en, GPIO.LOW)
time.sleep(0.1)def lcd_send(command):
# Send a command to the LCD
GPIO.output(lcd_rs, GPIO.LOW)
GPIO.output(lcd_en, GPIO.HIGH)
GPIO.output(lcd_d4, command & 0x10)
GPIO.output(lcd_d5, command & 0x20)
GPIO.output(lcd_d6, command & 0x40)
GPIO.output(lcd_d7, command & 0x80)
time.sleep(0.01)
GPIO.output(lcd_en, GPIO.LOW)
time.sleep(0.01)def lcd_write(message):
# Write a message to the LCD
for char in message:
lcd_send(ord(char) >> 4)
lcd_send(ord(char) & 0xF)lcd_init()while True:
sensor_value = GPIO.input(sensor_pin)
lcd_write("Sensor Value: " + str(sensor_value))
time.sleep(1)
```Note: In these examples, the LCD display is assumed to be connected to the specified pins on the Arduino or Raspberry Pi board. Please ensure that the pin connections match your specific setup. Additionally, the code examples are simplified and may require additional configuration and error handling in a real-world application.