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![First Sketch: Make an LED Blink - Environmental Monitoring with Arduino [Book]](https://www.oreilly.com/api/v2/epubs/9781449328603/files/httpatomoreillycomsourceoreillyimages971415.png "First Sketch: Make an LED Blink - Environmental Monitoring with Arduino [Book]")
First Sketch: Make an LED Blink - Environmental Monitoring with Arduino [Book]
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