RGB LEDs

Overview

The AlphaBot V2 is a popular robotics development platform that includes RGB (Red-Green-Blue) LEDs for visual feedback, status indication, and debugging purposes. These LEDs can produce a wide range of colors by mixing different intensities of red, green, and blue light.

Key Features

• Integrated RGB LEDs: Typically includes one or more RGB LEDs.
• PWM (Pulse Width Modulation) Control: Allows precise color mixing by varying brightness levels.
• Programmable: Can be controlled via a microcontroller (e.g., Arduino, Raspberry Pi).
• Common Anode or Cathode Configuration: Depending on the model, the RGB LED may share a common power or ground connection.

Working

• Color Control
  • An RGB LED contains three separate LEDs (Red, Green, Blue) in a single package.
  • By adjusting the brightness of each LED (using PWM), various colors can be produced.
  • Example
    1. Red (100%) + Green (100%) + Blue (0%) = Yellow
    2. Red (100%) + Green (0%) + Blue (100%) = Magenta
• Control Method
  • The AlphaBot V2's RGB LED is usually connected to PWM-capable GPIO pins on the microcontroller.
  • A current-limiting resistor is used for each color channel to prevent damage.
• Microcontroller Interfacing
  • If using Arduino, the analogWrite() function controls brightness (0-255).

Colors (Using PWM)

Colors	RED	GREEN	BLUE
Red	255	0	0
Green	0	255	0
Blue	0	0	255
Yellow	255	255	0
Magenta	255	0	255
Cyan	0	255	255
White	255	255	255
Blank	0	0	0

📝 Note: Brightness of the RGB LED can be increased or decreased by changing the value of PWM (0 - 255).