Created
June 12, 2017 08:54
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Metawear's accelerometer broadcasting webserver in Node.js
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/* jshint esversion : 6 */ | |
/* Author : Alan Hortz <alan@handson.io> */ | |
const express = require('express'); | |
const app = express(); | |
const server = require('http').createServer(app); | |
const io = require('socket.io')(server); | |
const metawear = require('node-metawear'); | |
var rate = 50; | |
var range = 2; | |
app.use(express.static('public')); | |
server.listen(8000, function() { | |
console.log('server listening on port 8000'); | |
}); | |
io.on('connection', function() { | |
console.log('user connected'); | |
}); | |
metawear.discover(function(device) { | |
console.log('metawear discovered ', device.address); | |
device.on('disconnect', function() { | |
console.log('we got disconnected! :( '); | |
}); | |
device.connectAndSetup(function(error) { | |
console.log('were connected!'); | |
console.log('Start accelerometer with ' + rate + 'hz ang +-' + range + 'g'); | |
var accelerometer = new device.Accelerometer(device); | |
var logger = new device.Log(device); | |
accelerometer.setOutputDataRate(rate); | |
accelerometer.setAxisSamplingRange(range); | |
logger.startLogging(false); | |
accelerometer.setConfig(); | |
accelerometer.enableNotifications(); | |
accelerometer.enableAxisSampling(); | |
accelerometer.start(); | |
accelerometer.onChange(function(data) { | |
io.emit('accelerometer', data); | |
}); | |
}); | |
}); |
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