Embedded Interface RGB LED

RGB LED = One LED package with 3 tiny LEDs inside:

• Red
• Green
• Blue

By controlling the brightness of each LED, we can mix them to create any color (over 16 million combinations).

PWM -Pulse width Modulation

• (255,0,0) = Full Red
• (0,255,0) = Full Green
• (0,0,255) = Full Blue

Types of RGB LEDs

1. Common Cathode (CC):
   • All negative (–) pins are connected together to GND.
   • Each positive (+) pin is controlled separately.
2. Common Anode (CA):
   • All positive (+) pins are connected to VCC (e.g., 5V).
   • Each negative (–) pin is controlled separately.

RGB LED Real-World Applications

• IoT dashboards for alerts
• Smart home lighting (Philips Hue, WiFi LED bulbs)
• Status indicators in devices (Red = Error, Green = OK, Blue = Processing)
• Decorative lighting (RGB strips)