Created
May 18, 2020 11:47
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| #include <DHT.h> | |
| DHT dht(3, DHT11); | |
| void setup() { | |
| Serial.begin(9600); | |
| dht.begin(); | |
| } | |
| void loop() { | |
| float temperature = dht.readTemperature(); | |
| float humidity = dht.readHumidity(); | |
| Serial.print(temperature); | |
| Serial.print('\t'); | |
| Serial.print(humidity); | |
| Serial.print('\n'); | |
| delay(1000); | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Humidity volume control</title> | |
| <style> | |
| html, | |
| body { | |
| height: 100%; | |
| margin: 0; | |
| } | |
| body { | |
| display: flex; | |
| flex-direction: row; | |
| justify-content: center; | |
| align-items: center; | |
| } | |
| .text { | |
| font-size: 30vh; | |
| } | |
| .emoji { | |
| width: 2em; | |
| text-align: center; | |
| } | |
| </style> | |
| <script> | |
| var steam = new EventSource('/events'); | |
| steam.onmessage = function (event) { | |
| var data = JSON.parse(event.data); | |
| var { temperatue, humidity } = data; | |
| document.getElementById("humidity").innerText = `${humidity}%`; | |
| }; | |
| </script> | |
| </head> | |
| <body> | |
| <div class="text emoji">🔊</div> | |
| <div id="humidity" class="text">--%</div> | |
| <div class="text emoji">💧</div> | |
| </body> | |
| </html> |
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| { | |
| "name": "dht-volume", | |
| "version": "1.0.0", | |
| "description": "", | |
| "main": "script.js", | |
| "scripts": { | |
| "test": "echo \"Error: no test specified\" && exit 1" | |
| }, | |
| "author": "Benjamin Swart", | |
| "license": "MIT", | |
| "dependencies": { | |
| "express": "^4.17.1", | |
| "express-sse": "^0.5.3", | |
| "serialport": "^9.0.0", | |
| "win-audio": "^2.0.2" | |
| } | |
| } |
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| const SerialPort = require('serialport'); | |
| const Readline = require('@serialport/parser-readline'); | |
| const audio = require('win-audio').speaker; | |
| const express = require('express'); | |
| const SSE = require('express-sse'); | |
| const port = new SerialPort("COM3", { baudRate: 9600 }); | |
| const app = express(); | |
| const sse = new SSE(); | |
| const parser = new Readline(); | |
| port.pipe(parser); | |
| parser.on('data', line => { | |
| var values = line.split('\t'); | |
| var temperature = parseFloat(values[0]); | |
| var humidity = parseFloat(values[1]); | |
| audio.set(humidity); | |
| sse.send({ temperature, humidity }); | |
| }); | |
| app.get("/", (req, res) => { | |
| res.sendFile(__dirname + "/display.html"); | |
| }); | |
| app.get("/events", sse.init); | |
| app.listen(80); |
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