RGB LED (Common Cathode)
A multi-color LED that can produce any color by mixing Red, Green, and Blue light intensities using PWM.
Overview
An RGB LED packages three tiny LEDs (red, green, blue) inside a single housing. By adjusting the brightness of each color channel with PWM (0-255), you can create virtually any visible color. Common-cathode LEDs share a single ground pin; common-anode LEDs share a single VCC pin.
Specifications
| Parameter | Value |
|---|---|
| Forward Voltage (Red) | 2.0V |
| Forward Voltage (Green) | 3.2V |
| Forward Voltage (Blue) | 3.2V |
| Max Current | 20mA per color |
Wiring Guide
| LED Pin | Arduino Pin |
|---|---|
| Cathode (longest pin) | GND |
| Red | 220-ohm resistor then PWM pin |
| Green | 220-ohm resistor then PWM pin |
| Blue | 220-ohm resistor then PWM pin |
Usage in ArduinoStudio
Drag the RGB LED component onto the canvas, assign three PWM pins (R, G, B), and use the color action to set any hex or RGB value. Great for status indicators, mood lighting, or visual feedback in interactive projects.