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Jotham Gates committed Jan 28, 2022
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A "musical" siren for bicycles.
<img alt="Overview photo of the horn from an angle" src="Images/Overview_NB_Small.png" width="200px" align="right">

This design was published in the Circuit Notebook section of the [Februrary 2022 issue](https://www.siliconchip.com.au/Issue/2022/February) of the Silicon Chip magazine. Feel free to have a look there if you would like a nice explanation / writeup of the horn's operations and construction.

## Main steps for building and usage
1. Modify the Arduino nano for low power and low voltage usage.
2. Build the circuit - see [BikeHornPCB](BikeHornPCB) for a PCB design. The siren is from an old smoke alarm.
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6. Upload to the Arduino and test.
7. Mount on bicycle / vehicle and have fun.

A low resolution gif that gives an idea of order of assembly:
See the Silicon Chip section or the [Images directory](Images) for relevent diagrams and images of the horn.

A low resolution gif that gives an idea of order of assembly:
![AssemblyGIF.gif](Images/AssemblyGIF.gif)

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