DFRobot
Gravity: 4-Digital LED Segment Display Module (Red)
A 4-digit 7-segment LED display module from DFRobot's Gravity series. This red LED display communicates over I2C, making it easy to wire up with just two dat...
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A 4-digit 7-segment LED display module from DFRobot's Gravity series. This red LED display communicates over I2C, making it easy to wire up with just two data lines and compatible with a wide range of microcontrollers.
The module supports 8-level brightness adjustment, so you can fine-tune the display intensity to suit your project's environment — from dim indoor indicators to bright, readable counters.
Key Features
- 4-Digit 7-Segment Display – 8 segments × 4 digits with red LEDs
- I2C Interface – Simple two-wire communication, fewer pins needed
- 8-Level Brightness Control – Adjustable to suit different lighting conditions
- Gravity Connector – Plug-and-play with DFRobot Gravity-compatible boards
- Wide Temperature Range – Operates from -40°C to +85°C
Specifications
- Operating Voltage – 5V DC
- Operating Current – <55 mA
- Operating Temperature – -40°C to +85°C
- Storage Temperature – -55°C to +125°C
- Display Size – 50.5 × 19 mm (2.0 × 0.75″)
- PCB Size – 67 × 22 mm (2.64 × 0.87″)
- Interface – I2C
Ideal For
- Numeric readouts and counters
- Clocks and timers
- Sensor data displays
- Arduino and microcontroller projects
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- 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.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
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