What is the purpose of tiny "bumps" on LED legs? - Electrical Engineering Stack Exchange
How are the LEDs represented in the Starter Kit projects book? – Arduino Help Center
/attachments/Light%20Emitting%20Diodes%20(LEDs)%20-%20Model1.gif "Light Emitting Diodes (LEDs) - Activity")
Light Emitting Diodes (LEDs) - Activity
How to use 3 leg LED in a circuit? - YouTube
Led orientation
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Polarity - learn.sparkfun.com
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Do LED Bulbs Have Polarity? - LED & Lighting Info
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LED Lights - Code: Internet of Things
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How do RGB LEDs work? | Random Nerd Tutorials
What is an LED?
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What is an LED?
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LED Light - Internet of Things Project
