How to Add a Simple Circuit to Your Arduino
![How to Add a Simple Circuit to Your Arduino](https://www.digikey.my/-/media/MakerIO/Images/blogs/2018/How%20to%20Add%20a%20Simple%20Circuit%20to%20Your%20Arduino/Fig-1.jpg?ts=4e2d9e7a-2725-4247-921b-57bd6d02c4f5&la=en-MY)
The Arduino is a fantastic development board for testing ideas and products, but unless you learn how to connect it to external circuits, it is rather pointless! In this article, we will learn how to do just that!
![](https://docs.arduino.cc/static/7dbfb4b4c090ba1bc52c2a779822b8f9/29114/circuit.png)
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