Arduino Sound-Level Protector
September 18, 2015
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![Arduino Sound-Level Protector](https://cdn.xingosoftware.com/elektor/images/fetch/dpr_1,w_800,h_460,c_fit/https%3A%2F%2Fwww.elektormagazine.com%2Fassets%2Fupload%2Fimages%2F8%2F20150918092606_Arduino-Sound-Level-Protector.jpg)
The Arduino is a real jack-of-all-trades. You can use this inexpensive microcontroller board for all kinds of things thanks to the expansion connectors for which countless 'shields' are available. In an article published in Elektor’s September & October 2015 edition we show you how you can realize a 'sound-level traffic light' using an Uno, together with an Elektor-developed multipurpose shield and a handful of common parts.
The book Mastering Microcontrollers — helped By Arduino is an excellent starting point for anyone who would like to get started using microcontrollers and their programming, without the requirement for a lot of prior knowledge. The book also describes several different hardware examples, which you can usually build on a small piece of experimenting board. In the second edition of the book an extra chapter was added, which contains even more examples. A universal shield was developed for these examples, which is available from the Elektor Store, either by itself or as part of a kit. This can be used to quickly build the various circuits.
The book Mastering Microcontrollers — helped By Arduino is an excellent starting point for anyone who would like to get started using microcontrollers and their programming, without the requirement for a lot of prior knowledge. The book also describes several different hardware examples, which you can usually build on a small piece of experimenting board. In the second edition of the book an extra chapter was added, which contains even more examples. A universal shield was developed for these examples, which is available from the Elektor Store, either by itself or as part of a kit. This can be used to quickly build the various circuits.
![](https://cdn.xingosoftware.com/elektor/images/fetch/dpr_1,w_700,h_514,c_fit/https%3A%2F%2Fwww.elektormagazine.com%2Fassets%2Fupload%2Fimages%2FMastering-Microcontrollers-Scene-700.jpg)
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