TinyShield Miniature Arduino Compatible Matrix LEDs Red Shield

LED - Light Emitting Diode - a small light source

Yellow - A primary colour. The sun is often described as yellow

Red - One of the three primary colours

Colour - The categorised spectrum of light visable to humans

LED - Light Emitting Diode. A bulb that is very efficient at producing light. Often small.

Popular - Something that is admired and liked by many people.

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