RGB LED Module with 4-Pin Header for Arduino | Compoden
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RGB LED Module (4-Pin, Common Cathode) for Arduino
The RGB LED Module is a compact breakout board featuring a common cathode RGB LED with integrated current-limiting resistors. Designed for easy connection to Arduino and compatible microcontroller boards, it allows you to add full-color visual feedback to your projects. Use it for status indicators, ambient lighting, or color-coded signals.
Key Specifications
| Specification | Value |
|---|---|
| LED Type | Common Cathode RGB |
| Forward Voltage (Red) | ~2.0V |
| Forward Voltage (Green/Blue) | ~3.2V |
| Max Current per Color | 20mA |
| Pin Configuration | R, G, B, GND |
| Resistors | Integrated (220Ξ© each) |
What You Can Build With This
- Mood lamp with smooth color transitions
- Status indicator for battery level or sensor readings
- Color-coded alarm system (red for error, green for okay)
- Interactive light-up toy or game controller feedback
Compatibility
This module works with any microcontroller board offering digital I/O pins, including Arduino Uno, Nano, Mega, and ESP8266/ESP32. It operates at 5V logic but can be used with 3.3V boards if the LED brightness is acceptable. Common pairings include the Arduino Uno for prototyping and the NodeMCU for IoT color notifications.
Wiring Notes
Connect the R, G, B pins to PWM-capable digital outputs on your microcontroller (e.g., pins 9,10,11 on Arduino Uno). The fourth pin is ground. No external resistors are needed. For common cathode modules, ensure the ground pin is connected to the microcontroller's GND.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-7 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, the module has a common cathode and built-in resistors, so you can connect R, G, B to any PWM pins on the Uno and the cathode to GND. It works with the standard Arduino IDE without additional libraries.
What is the pinout of this module?
The module has a 4-pin header: V (common cathode, actually ground), R (red), G (green), B (blue). Some modules label the common as '-' or GND. Check your module's labeling: connect the common to GND, and the R, G, B to PWM pins.
Can I use this with a 3.3V board like ESP32?
Yes, but the LEDs may shine dimmer at 3.3V logic. The internal resistors are sized for 5V, so at 3.3V the current is lower. For full brightness, you might use a level shifter, but for most applications direct connection works fine.
π¦ Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document β step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
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Shipping Information
- Prepaid Orders: βΉ75 for orders up to βΉ999, FREE shipping above βΉ999
- COD Orders: βΉ125 shipping + βΉ50 COD fee = βΉ175 total
- Delivery Timeline: Dispatch in 3-7 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items