DFRobot
Gravity: I2C 16x2 Arduino LCD with RGB Backlight Display
A 16×2 character LCD module with full RGB backlight, communicating over I2C for minimal wiring. With support for 16 million backlight colours, this display a...
A 16×2 character LCD module with full RGB backlight, communicating over I2C for minimal wiring. With support for 16 million backlight colours, this display adds a vibrant, customisable readout to your Arduino or compatible microcontroller projects using just four wires: VCC, GND, SDA, and SCL.
Part of the DFRobot Gravity ecosystem, the module features a standard Gravity 4-pin I2C connector for plug-and-play use with Gravity-compatible shields and boards. It also works with any I2C-capable microcontroller at 3.3 V or 5 V logic levels.
Key Features
- 16×2 Character Display – Standard two-line LCD with 16 characters per line
- RGB Backlight – Full-colour adjustable backlight with 16 million colour options
- I2C Interface – Only 4 wires required (VCC, GND, SDA, SCL), saving digital pins
- Wide Voltage Range – Operates from 3.3 V to 5.0 V
- Low Power – Less than 0.8 mA operating current
- Gravity Connector – Standard 4-pin I2C cable included for quick hookup
Specifications
- Operating Voltage – 3.3–5.0 V
- Operating Current – <0.8 mA
- Display – 16×2 characters
- Interface – I2C
- Operating Temperature – −20 °C to +70 °C
- Storage Temperature – −30 °C to +80 °C
- Dimensions – 87 × 32 × 13 mm
Ideal For
- Sensor readout displays and dashboards
- Arduino and Raspberry Pi projects with limited GPIO
- Status indicators with colour-coded backlighting
- DFRobot Gravity ecosystem builds
Package Contents
- 1× Gravity I2C 16×2 LCD with RGB backlight
- 1× Gravity 4-pin I2C/UART sensor cable
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- LCD
- LCD stands for liquid crystal display, a screen technology that uses a backlight and liquid crystals to show images or text. It matters because LCD modules usually need a display driver and enough controller pins or a bus interface to send image data.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- RGB
- Short for red, green and blue, usually referring to an LED that can mix those three colours. It matters because controlling an RGB LED teaches how separate outputs combine to create different colours.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
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Brands
Displays & Screens
Supplier page — dfrobot.com
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Related Tutorials
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