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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![3] Mac で Arduino に、『Lチカ』プログラムを書き込む | はじめてのPICマイコン ブログ](https://stat.ameba.jp/user_images/20210529/13/hajimeteno-pic/9d/9b/g/o0650041614949132423.gif "3] Mac で Arduino に、『Lチカ』プログラムを書き込む | はじめてのPICマイコン ブログ")
3] Mac で Arduino に、『Lチカ』プログラムを書き込む | はじめてのPICマイコン ブログ
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