Bad Tutorial? Connect an LED directly to pin 13 without resistor? - Website and Forum - Arduino Forum
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LED BLINKING USING ARDUINO NANO - Instructables
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Blink | Arduino
RGB LED Arduino
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How to Connect LED to Arduino and Control it - NerdyTechy
Yet Another Arduino Blog: ESP8266 wiring schemas
DIY Science: Measuring Light with a Photodiode II | Outside Science
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IR Communication - learn.sparkfun.com
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arduino - Purpose of the diode and capacitor in this motor circuit - Electrical Engineering Stack Exchange
Multiplexing With Arduino and the 74HC595 : 14 Steps (with Pictures) - Instructables
