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Color matching
Input latches for BCD code storage
this digital microscope is widely used in collections/coin inspection
part replacement
RGB LED Driver Module Round Board 16 LED (WS2812 5050) follower Color matchingIntroduction : 16 ultra bright smart LED are arranged in a circle with 68mm outer diameter. The rings are chainable connect the output pin of one to the input pin of another. Use only one microcontroller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive so the color will be very consistent even if the voltage varies, and no external choke resistors
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