If you do this then the colour remains the same and the brightness increases. Of PWM signals fed to each LED the same as the values that you reach You really want is to increase the brightness but keep the proportion The point is that there is only one colour LED and thisįor three LEDs, where there are 3 PWM signals - one to each LED, what The normal fading program for a single LED is quite simple in that itĪdds a value to the current PWM signal to increase the brightness of You need to do is connect 4 wires 3 PWM signals and one groundĬonnection (labelled '-') to the Arduino - You don't need a solderless breadboard. The three current limiting resistors (these are 150 ohm each). Fading RGB LED Arduino: Use a Keys RGB LEDĪlternatively use a Keyes RGB LED mounted on an small PCB (used in the photos). Three other pins are positive voltage pins fed via PWM signals through The flat side of the LED is a common cathode (ground connection). Fading RGB LED Arduino: Connection Diagram
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