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I don't get why the LED is still going when port 13 is set to high. If anyone could explain that would be great! :) : r/arduino
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![First Sketch: Make an LED Blink - Environmental Monitoring with Arduino [Book]](https://www.oreilly.com/api/v2/epubs/9781449328603/files/httpatomoreillycomsourceoreillyimages971417.png "First Sketch: Make an LED Blink - Environmental Monitoring with Arduino [Book]")
First Sketch: Make an LED Blink - Environmental Monitoring with Arduino [Book]
Arduino in-built LED is not turning off - Arduino Stack Exchange
Parts | Arduino Lesson 1. Blink | Adafruit Learning System
