Basic LED setup

Jon Chandler

Joined Jun 12, 2008
158
The Pi has 3.3v I/O pins, which are not 5 volt tolerant. If you connect an LED + resistor between +5 and the I/O pin, the I/O pin may see > 3.3v when the LED is off.
 

jayanthd

Joined Jul 4, 2015
945
I am sure they are addressable LEDs like WS2812B or similar. NeoPixel type which uses say 5V for all parallel powered LEDs and current based on LED string length, color, and brightness of each LED in the string.
 
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