pigpio-vma309

Sound Sensor VMA309 for Raspberry Pi using npm module pigpio.

!alt text

Installation

$ npm install pigpio-vma309 --save

Usage

```javascript
var Sensor = require('pigpio-vma309');
var sensor = new Sensor({pin:19});

sensor.on('alert', (duration) => {
console.log('Sound detected for %d milliseconds', duration);
});
```