I2C LCD Display 16X2

Power

The module operates at a 5V DC power supply, which is standard for most Arduino boards. It consumes minimal power,  around 20mA with the backlight on. The low power requirements make it suitable for battery-operated projects.

Input and Output

• Input: Receives serial data from the Arduino, which it uses to display characters and commands.
• Output: Displays text characters on the 16 x 2 screen. It can show numbers, letters, and basic symbols.

Physical Characteristics

• Display Size: 16 characters x 2 lines.
• Module Dimensions: Approximately 80mm x 36mm x 15mm.
• Character Size: Each character block is around 5mm x 8mm.
• Backlight Color: Usually blue or green, depending on the model.

Technical Specifications

• Controller: Uses a serial communication controller, often based on an HD44780 or similar chipset.
• Interface: Serial communication (UART).
• Operating Voltage: 5V DC.
• Current Consumption: Approximately 20mA with the backlight.
• Backlight Type: LED.

Additional Features

• Ease of Use: The serial interface reduces the number of wiring connections needed, making setup easier.
• Versatile Applications: Suitable for a wide range of projects where you need to display text or data.
• Library Support: Compatible with serial LCD libraries for Arduino, which simplifies coding.

How to Use

1. Connect the Wiring: Attach the LCD module to your Arduino using the provided connections. Connect VCC and GND to the Arduino’s 5V and ground. Connect TX and RX to the appropriate digital pins on the Arduino.
2. Install the Library: Install a serial LCD library for Arduino, such as LiquidCrystal or NewSoftSerial, from the Arduino Library Manager. This library will help you control the display with simpler code.
3. Initialize the Display: In your Arduino code, initialize the serial communication and set up the LCD using functions provided by the library. For example, use lcd.begin(16, 2) to initialize a 16×2 display.
4. Adjust Contrast: If your module has a contrast adjustment pin (V0), connect it to a potentiometer to adjust the visibility of the characters on the display.
5. Write Data: Use library functions to send data to the display. Functions like lcd.print(“Hello World”) will display text on the LCD. You can also use lcd.setCursor(column, row) to position the text.
6. Upload and Test: Upload your code to the Arduino and check that the text appears correctly on the LCD. Adjust the wiring or code if necessary.

The 16 x 2 Serial LCD Module for Arduino is an easy-to-use and versatile component for displaying textual information. Its serial interface simplifies connections, and its pre-assembled nature makes it user-friendly for both beginners and experienced hobbyists.