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What is the solution for this problem? How do I connect a 64 LED with an Arduino Uno R3? The Arduino has only 13 pins for a digital I/o.' - Quora
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![1. The World's Shortest Electronics Primer - Atmospheric Monitoring with Arduino [Book]](https://www.oreilly.com/library/view/atmospheric-monitoring-with/9781449338138/figs/amwa_0104.png "1. The World's Shortest Electronics Primer - Atmospheric Monitoring with Arduino [Book]")
1. The World's Shortest Electronics Primer - Atmospheric Monitoring with Arduino [Book]
nano pin 13 out - Programming Questions - Arduino Forum
File:Power and Pin13 LED on Arduino Compatible Board.jpg - Wikimedia Commons
