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RGB LED Module๏ƒ

../_images/28_rgb_module.png

The RGB Full Color LED module emits a range of colors by mixing red, green, and blue light. Each color is adjusted by using PWM.It can be used to create colorful lighting effects or to learn how to use PWM (pulse-width modulation) with Arduino.

Pinout๏ƒ

  • GND: Common ground for power.

  • B: Controls the brightness of the red LED. By adjusting the current flowing through this pin, the intensity of the red light can be varied.

  • R: Controls the brightness of the green LED. Similarly to the red pin, adjusting the current flow through this pin changes the intensity of the green light.

  • G: Controls the brightness of the blue LED. By adjusting the current flowing through this pin, the intensity of the blue light can be altered.

Principle๏ƒ

The RGB MODULE works by using a full-color LED that uses R, G, and B pins with adjustable PWM voltage input. Colors from the LED can be combined. For example, mix blue light and green light give cyan light, red light and green light give yellow light. This is called โ€œThe additive method of color mixingโ€.

../_images/28_rgb_module_2.png

Based on this method, we can use the three primary colors to mix the visible light of any color according to different proportions. For example, orange can be produced by more red and less green. The strength of the primary colors (red, blue, green) is adjusted in order to achieve full color mixing effect.PWM is a technique where the duty cycle of a digital signal is modified, adjusting the percentage of time that the signal remains active within a given period. By changing the duty cycle, we can make the LED appear brighter or dimmer.

Schematic diagram๏ƒ

../_images/28_rgb_module_schematic.png

Example๏ƒ