3-Color RGB LED Module for Arduino & Microcontroller Development Boards

Add dynamic color-changing visual feedback to your electronics projects with the RGB LED Module for Arduino Compatible Boards. Operating on $3.3 ext{V}$ to $5 ext{V DC}$ , this easy-to-use breakout board features a high-brightness Red, Green, and Blue light-emitting diode with built-in or accessible current-limiting resistors. Designed with standard $2.54 ext{mm}$ header pins, it connects directly to digital PWM output pins on Arduino, ESP32, STM32, and Raspberry Pi boards. By adjusting Pulse Width Modulation (PWM) signal duty cycles across the three primary color channels, you can generate over 16 million custom color combinations and smooth color gradients.

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Tags RGB LED Module Arduino 3-Color LED Breakout Board PWM RGB LED Module KY-016 RGB Module KY-009 SMD RGB Module Arduino Color Light Sensor Indicator 5V RGB Module

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Product Details :

The RGB LED Module for Arduino Compatible Boards is a fundamental, multi-color visual output component engineered for rapid breadboarding and hardware prototyping. Incorporating three individual LED dies (Red, Green, and Blue) into a single compact package, this module allows developers to output the entire visible color spectrum through basic Pulse Width Modulation (PWM) control.

Compatible with both Common Cathode and Common Anode configurations depending on the specific breakout variant, the board includes integrated current-limiting resistors (on SMD models) or dedicated terminal pads to shield the LED diodes from over-current damage. Its compact footprint and breadboard-friendly $2.54 ext{mm}$ header pins make it an ideal choice for user interface status lights, ambient illumination, optical feedback signals, and STEM robotics education.

Key Features and Benefits

Full-Color Tri-Color Generation: Combine Red, Green, and Blue PWM signals to display millions of unique hues, white light, or animated transitions.
Universal $3.3 ext{V} / 5 ext{V}$ Logic Compatibility: Interfaces directly with standard $5 ext{V}$ Arduino UNO/Mega development boards as well as $3.3 ext{V}$ platforms like ESP32, ESP8266, STM32, and Raspberry Pi.
Easy PWM Control: No complex communication protocols required—simply vary the analog duty cycle ( $0 - 255$ ) on the control pins using standard library calls or PWM outputs.
Compact PCB Design: Includes mounting holes for secure enclosure installation or breadboard integration.
Low Power Consumption: Operates on minimal current ( $le 20 ext{mA}$ per color channel), making it suitable for battery-powered IoT devices.

Technical Specifications

Feature Component	Specification Details
Module Type	3-Color RGB LED Module Breakout
LED Package Type	$5 ext{mm}$ Through-Hole DIP or 5050 SMD
Polarity Type	Common Cathode (GND shared) or Common Anode ( $VCC$ shared)
Operating Voltage ( $V_{CC}$ )	$3.3 ext{V DC to } 5.0 ext{V DC}$
Forward Current ( $I_F$ )	$pprox 20 ext{ mA}$ per channel max
Dominant Wavelengths	Red: $620-625 ext{nm}$ , Green: $520-525 ext{nm}$ , Blue: $460-465 ext{nm}$
Luminous Intensity	Red: $800-1000 ext{mcd}$ , Green: $1500-2000 ext{mcd}$ , Blue: $700-900 ext{mcd}$
Interface Pins	4-Pin $2.54 ext{mm}$ Pitch Header ( $R, G, B, -$ / $GND$ )

Wiring & Pinout Guide

1. Pin Description (Common Cathode Configuration):

Header Pin	Label	Wiring Connection
R	Red Control Pin	Connect to Arduino Digital PWM Pin (e.g., Pin 9) via $220Omega$ resistor
G	Green Control Pin	Connect to Arduino Digital PWM Pin (e.g., Pin 10) via $220Omega$ resistor
B	Blue Control Pin	Connect to Arduino Digital PWM Pin (e.g., Pin 11) via $220Omega$ resistor
$-$ / GND	Common Ground	Connect to Arduino Ground ( $GND$ )

BEST PRACTICE WIRING TIPS:

Current Protection: If your module variant does not include onboard resistors, always connect a $220Omega - 330Omega$ resistor in series with the $R$ , $G$ , and $B$ control lines to avoid burning out the LED dies.

PWM Pin Selection: Ensure the control pins chosen on your microcontroller support hardware PWM (marked with a tilde ~ on standard Arduino boards).

Applications

User Interface Status Indicators: Multi-color diagnostic lights for system state, network connections, and error warnings.
Interactive Lighting Projects: Mood lamps, audio reactive light displays, and custom desktop illuminators.
Robotics & STEM Learning: Teaching primary color mixing, PWM modulation, and basic hardware-software interaction.
Smart Home Devices: Color-coded notification displays for IoT appliances and security nodes.