DFRobot
Gravity:Digital RED LED Light Module
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A simple red LED module with a Gravity 3-pin digital interface for plug-and-play connection to Arduino and other microcontrollers via a Gravity IO Expansion ...
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A simple red LED module with a Gravity 3-pin digital interface for plug-and-play connection to Arduino and other microcontrollers via a Gravity IO Expansion Shield. Ideal for beginners learning digital output control.
Key Features
- Gravity Interface – 3-pin plug-and-play connection
- Digital Control – Simple on/off via a single digital pin
- Active-Low Design – LED lights when the signal pin is set LOW
Specifications
- Type – Digital
- Colour – Red
- Pin Definition – (1) Signal, (2) VCC, (3) GND
Package Contents
- 1× Gravity Digital Red LED Module
- 1× Digital Sensor Cable
Note: This LED is wired active-low — it lights up when the signal pin is set to LOW. This prevents the LED from drawing excessive current from the microcontroller I/O pin. To use it with active-high logic, swap the signal wire (green) with the GND wire (black), and connect the VCC wire (red) to the signal pin's original position.
Jargon buster
Plain-language definitions for the technical terms used above.
- 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.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- 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.
- Shield
- An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.
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