Driving a Tri-Color LED

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02:23:19

Driving a Tri-Color LED
This circuit drives each color slowly from dark to full brightness. Each oscillator has a different frequency. This creates a total mixture of colors and allows the RGB LED to produce all its different colors. Change the 220k/8.2k  etc. for each oscillator to get a different mixing effect.

The output pin 3 goes high immediately, but the base is slowly taken high because the 100u takes time to charge via the 8.2 K etc. resistor. 

published 8 months ago

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