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| var express = require('express'); | |
| var app = express(); | |
| var http = require('http').Server(app); | |
| var io = require('socket.io')(http); | |
| var serialport = require("serialport"); | |
| var SerialPort = serialport.SerialPort; | |
| var port = new SerialPort("/dev/tty.usbserial-A9007WoZ", { | |
| baudrate: 9600, | |
| parser: serialport.parsers.readline("\n") | |
| }); | |
| port.on('data', function(line){ | |
| var data = JSON.parse(line + ""); | |
| console.log(data.sensor); | |
| io.emit('sensor', data.sensor); | |
| }); | |
| app.get('/', function(req, res){ | |
| res.sendfile('index.html'); | |
| }); | |
| io.on('connection', function(socket){ | |
| console.log('a user connected'); | |
| socket.on('disconnect', function(){ | |
| console.log('user disconnected'); | |
| }); | |
| }); | |
| http.listen(3000); |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Socket.IO chat</title> | |
| <style> | |
| *{ | |
| border: 0; | |
| margin: 0; | |
| padding: 0; | |
| } | |
| .graph{ | |
| height: 100vh; | |
| background: #3498db; | |
| } | |
| </style> | |
| <script src="/socket.io/socket.io.js"></script> | |
| <script src="//code.jquery.com/jquery-2.1.1.min.js"></script> | |
| </head> | |
| <body> | |
| <div class="graph"></div> | |
| <script> | |
| var socket = io(); | |
| var $graph = $('.graph'); | |
| // $('a#bt').on('click', function(e) { | |
| // socket.emit('msg', 'bu!'); | |
| // }); | |
| // socket.on('msg', function(value){ | |
| // alert(value); | |
| // }); | |
| socket.on('sensor', function(value) { | |
| var width = (value * 100) / 1023; | |
| // console.log(width); | |
| $graph.css({"width": width + "%" }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| { | |
| "name": "Test-Socket.io", | |
| "version": "0.0.1", | |
| "description": "my first socket.io app", | |
| "dependencies": { | |
| "express": "4.9.5", | |
| "serialport": "1.4.6", | |
| "socket.io": "1.1.0" | |
| } | |
| } |
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| // Ultrasonic - Library for HR-SC04 Ultrasonic Ranging Module. | |
| // Rev.4 (06/2012) | |
| // J.Rodrigo ( www.jra.so ) | |
| // more info at www.ardublog.com | |
| #include <Ultrasonic.h> | |
| Ultrasonic ultrasonic(12,11); // (Trig PIN,Echo PIN) | |
| void setup() { | |
| Serial.begin(9600); | |
| } | |
| void loop() | |
| { | |
| Serial.print("{\"sensor\":\""); | |
| Serial.print(ultrasonic.Ranging(CM)); | |
| Serial.print("\"}\n"); | |
| delay(10); | |
| } |
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