Ever hear of a thing called RGB? Red, Green, Blue? How about an RGB LED? These 5mm units have four pins - one for each colour and a common cathode (the longest pin).
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Ever hear of a thing called RGB? Red, Green, Blue? How about an RGB LED? These 5mm units have four pins - one for each colour and a common cathode (the longest pin). Use this LED for three status indicators or pulse width modulate all three and get mixed colors!