Design with Serial Enabled 16x2 LCD - Black on Green 5V in Cirkit DesignerThe Serial Enabled 16x2 LCD - Black on Green 5V is a versatile and user-friendly display module that allows users to add a readable interface to their electronic projects. This component features a 16-character by 2-line liquid crystal display capable of displaying letters, numbers, and special characters. With its serial communication interface, it simplifies the process of integrating a display into projects, requiring fewer pins than parallel LCDs and making it ideal for microcontroller-based applications, such as Arduino projects.
This circuit features an Arduino Leonardo microcontroller connected to a 16x2 I2C LCD screen, powered by a 5V battery. The Arduino is programmed to display and continuously scroll a message on the LCD. The I2C communication protocol is used for the microcontroller to interface with the LCD, utilizing the SDA and SCL connections for data transfer.
Open Project in Cirkit Designer
This circuit features an Arduino Nano microcontroller interfaced with a 20x4 I2C LCD panel for display purposes. The LCD panel is powered by a 5V AC-DC power supply unit, and the Arduino Nano communicates with the LCD via I2C protocol using its A5 (SDA) and A1 (SCL) pins.
Open Project in Cirkit Designer
This circuit consists of an Arduino Mega 2560 microcontroller connected to a 16x2 I2C LCD screen. The LCD screen is powered by the Arduino's 5V and GND pins, and communicates with the Arduino via the I2C protocol using the SCL and SDA pins.
Open Project in Cirkit Designer
This circuit consists of an ESP8266 microcontroller connected to a 16x2 I2C LCD display. The ESP8266 controls the LCD via I2C communication, with the SDA and SCL lines connected to D2 and D1 pins of the ESP8266, respectively. The LCD is powered by the ESP8266's VIN and GND pins.
Open Project in Cirkit Designer| Pin Number | Name | Description |
|---|---|---|
| 1 | VSS | Ground |
| 2 | VDD | +5V Supply |
| 3 | VE | Contrast Adjust |
| 4 | RS | Register Select for Instruction/Data |
| 5 | R/W | Read/Write Signal (GND for write) |
| 6 | E | Enable Signal |
| 7-14 | D0-D7 | Data Bus Pins (Not used in serial mode) |
| 15 | A | Anode for Backlight (+5V) |
| 16 | K | Cathode for Backlight (GND) |
| 17 | RX | Serial Receive Pin |
| 18 | TX | Serial Transmit Pin (Not used; leave unconnected) |
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
void setup() {
// Set the baud rate to match the LCD's default baud rate
mySerial.begin(9600);
// Clear the screen
mySerial.write(0x7C);
mySerial.write(0x2D);
}
void loop() {
// Set the cursor to the beginning of the first line
mySerial.write(0xFE);
mySerial.write(0x80);
// Print a message on the first line
mySerial.print("Hello, World!");
// Set the cursor to the beginning of the second line
mySerial.write(0xFE);
mySerial.write(0xC0);
// Print a message on the second line
mySerial.print("Serial LCD Demo");
// Wait for 3 seconds
delay(3000);
// Clear the screen before looping
mySerial.write(0x7C);
mySerial.write(0x2D);
}
Q: Can I use this LCD with a 3.3V system? A: No, this LCD is designed for 5V operation. Using it with 3.3V may result in dim or unreadable characters.
Q: How do I change the baud rate of the LCD? A: The baud rate can be changed using a specific command sequence, which is detailed in the LCD's datasheet.
Q: Can I use this LCD without an Arduino? A: Yes, any microcontroller with a UART interface can be used to communicate with the LCD.
Q: Is it possible to create custom characters? A: Yes, the LCD supports custom characters. You can define them using the appropriate command sequence.