Add webclient code
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23
webclient/.gitignore
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23
webclient/.gitignore
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# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
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# dependencies
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/node_modules
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/.pnp
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.pnp.js
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# testing
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/coverage
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# production
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/build
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# misc
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.DS_Store
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.env.local
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.env.development.local
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.env.test.local
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.env.production.local
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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42
webclient/package.json
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42
webclient/package.json
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{
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"name": "webclient",
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"version": "0.1.0",
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"private": true,
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"dependencies": {
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"@testing-library/jest-dom": "^6.4.5",
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"@testing-library/react": "^15.0.7",
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"@testing-library/user-event": "^14.5.2",
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"axios": "^1.6.8",
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"moment": "^2.29.1",
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"mqtt": "^5.5.5",
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"react": "^18.3.1",
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"react-dom": "^18.3.1",
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"react-scripts": "5.0.1",
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"recharts": "^2.0.9",
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"web-vitals": "^3.5.2"
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},
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"scripts": {
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"start": "react-scripts start",
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"build": "react-scripts build",
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"test": "react-scripts test",
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"eject": "react-scripts eject"
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},
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"eslintConfig": {
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"extends": [
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"react-app",
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"react-app/jest"
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]
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},
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"browserslist": {
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"production": [
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">0.2%",
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"not dead",
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"not op_mini all"
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],
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"development": [
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"last 1 chrome version",
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"last 1 firefox version",
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"last 1 safari version"
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]
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}
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}
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36
webclient/public/index.html
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36
webclient/public/index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<meta name="theme-color" content="#000000" />
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<!--
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manifest.json provides metadata used when your web app is installed on a
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user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
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-->
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<!--
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Notice the use of %PUBLIC_URL% in the tags above.
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It will be replaced with the URL of the `public` folder during the build.
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Only files inside the `public` folder can be referenced from the HTML.
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Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
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work correctly both with client-side routing and a non-root public URL.
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Learn how to configure a non-root public URL by running `npm run build`.
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-->
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<title>Loadcell Display</title>
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</head>
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<body>
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<noscript>You need to enable JavaScript to run this app.</noscript>
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<div id="root"></div>
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<!--
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This HTML file is a template.
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If you open it directly in the browser, you will see an empty page.
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You can add webfonts, meta tags, or analytics to this file.
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The build step will place the bundled scripts into the <body> tag.
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To begin the development, run `npm start` or `yarn start`.
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To create a production bundle, use `npm run build` or `yarn build`.
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-->
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</body>
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</html>
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54
webclient/src/App.css
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54
webclient/src/App.css
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* {
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box-sizing: border-box;
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}
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body {
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background-color: #212121;
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}
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.container {
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max-width: 40em;
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margin: 0 auto;
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}
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.panels:after {
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content: "";
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display: table;
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clear: both;
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}
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.panel {
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float: left;
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width: 23%;
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padding-bottom: 20%;
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border-radius: 5%;
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border-style: solid;
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border-width: 0.5em;
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position: relative;
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margin: 1%;
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box-sizing: border-box;
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}
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.panel-label {
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position: absolute;
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color: white;
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top: 50%;
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left: 50%;
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transform: translate(-50%, -50%);
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font-size: 2em;
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width: 110%;
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text-align: center;
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}
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p {
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color: white;
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font-size: 2em;
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margin: 0.25em;
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}
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.recharts-wrapper p {
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color: initial;
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font-size: initial;
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}
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117
webclient/src/App.js
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117
webclient/src/App.js
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import React, { useState, useEffect } from 'react';
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import { LineChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, Legend, ResponsiveContainer } from 'recharts';
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import axios from 'axios';
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import moment from 'moment';
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import mqtt from 'mqtt';
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import './App.css';
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const client = mqtt.connect('mqtts://mqtt-dev.dns.t0.vc');
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function useMQTTSubscribe(client, topic, onMessage) {
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useEffect(() => {
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if (!client || !client.connected) {
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console.log('No client / connection');
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return;
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}
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const handleMsg = (receivedTopic, message) => {
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if (receivedTopic === topic) {
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onMessage(message.toString());
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}
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};
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client.subscribe(topic);
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client.on('message', handleMsg);
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return () => {
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client.unsubscribe(topic);
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client.off('message', handleMsg);
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};
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}, [client, topic, onMessage]);
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}
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function LoadCell(props) {
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const { client } = props;
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const [data, setData] = useState([]);
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const [current, setCurrent] = useState(0);
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const [max, setMax] = useState(0);
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const addData = (message) => {
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setData(prevState => {
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const new_data = message.split(',').map(x => {
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const val = parseInt(x);
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setCurrent(val);
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setMax(prevState => val > prevState ? val : prevState);
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return {force: val};
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});
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return [...prevState, ...new_data].slice(-50);
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});
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};
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useMQTTSubscribe(client, 'test', addData);
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console.log(data);
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return (
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<div>
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<div className='container'>
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<p>Loadcell demo</p>
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</div>
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{data ?
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<ResponsiveContainer width='100%' height={300}>
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<LineChart data={data}>
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<XAxis
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dataKey='time'
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minTickGap={10}
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/>
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<YAxis
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domain={[0, 100]}
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/>
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<CartesianGrid strokeDasharray='3 3'/>
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<Tooltip
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/>
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<Line
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type='monotone'
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dataKey='force'
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name='lbf'
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stroke='#ff5900'
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strokeWidth={2}
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dot={false}
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animationDuration={1000}
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/>
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</LineChart>
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</ResponsiveContainer>
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:
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<p>Loading...</p>
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}
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<div className='container'>
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<p>Current: {current} lbf</p>
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<p>Max: {max} lbf</p>
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</div>
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</div>
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);
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}
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function App() {
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const [connected, setConnected] = useState(false);
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useEffect(() => {
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client.on('connect', () => {
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setConnected(true);
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});
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}, [client]);
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return (
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<div>
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{connected ?
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<LoadCell client={client} />
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:
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<p>Connecting...</p>
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}
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</div>
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);
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}
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export default App;
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10
webclient/src/index.js
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10
webclient/src/index.js
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import React from 'react';
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import ReactDOM from 'react-dom';
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import App from './App';
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ReactDOM.render(
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<React.StrictMode>
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<App />
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</React.StrictMode>,
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document.getElementById('root')
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);
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10113
webclient/yarn.lock
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10113
webclient/yarn.lock
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