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Example code for wedo 2.0 car remote
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| <html> | |
| <head> | |
| <title>two motors tank remote</title> | |
| <script src="https://cdn.jsdelivr.net/npm/node-poweredup@latest/dist/browser/poweredup.js"></script> | |
| <style type="text/css"> | |
| #controls { | |
| display: none; | |
| } | |
| button{ | |
| position: fixed; | |
| width: 49%; | |
| height: 49%; | |
| font-size: 50pt; | |
| padding: 0px; | |
| } | |
| #backward { | |
| top:50%; | |
| } | |
| #left { | |
| top:50%; | |
| width: 25%; | |
| left:50%; | |
| } | |
| #right { | |
| top:50%; | |
| width: 25%; | |
| left:75%; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <button onclick="connect()" id="connect">connect</button> | |
| <div id="controls"> | |
| <button id="forward">⬆️</button> | |
| <button id="backward">⬇️</button> | |
| <button id="left">⬅️</button> | |
| <button id="right">➡️</button> | |
| </div> | |
| <script> | |
| if (!PoweredUP.isWebBluetooth) { | |
| alert("Your browser does not support the Web Bluetooth."); | |
| } | |
| const poweredUP = new PoweredUP.PoweredUP(); | |
| poweredUP.on("discover", onDiscover); | |
| let hub; | |
| function connect() { | |
| poweredUP.scan(); | |
| document.getElementById('connect').style.display='none'; | |
| } | |
| let motorA, motorB; | |
| async function onDiscover(newHub) { | |
| hub = newHub; | |
| console.log(`Discovered ${hub.name}!`); | |
| await hub.connect(); | |
| motorA = await hub.waitForDeviceAtPort("A"); | |
| if (motorA.type != PoweredUP.Consts.DeviceType.SIMPLE_MEDIUM_LINEAR_MOTOR) { | |
| alert('No motor attached to port A'); | |
| } | |
| motorB = await hub.waitForDeviceAtPort("B"); | |
| if (motorB.type != PoweredUP.Consts.DeviceType.SIMPLE_MEDIUM_LINEAR_MOTOR) { | |
| alert('No motor attached to port B'); | |
| } | |
| document.getElementById('controls').style.display='block'; | |
| console.log('Motors ready') | |
| } | |
| // buttons and are they down | |
| let buttons = { | |
| forward: false, | |
| backward: false, | |
| right: false, | |
| left: false | |
| }; | |
| for (const button in buttons) { | |
| let el = document.getElementById(button) | |
| el.addEventListener('touchstart', function(e) { | |
| e.preventDefault(); | |
| buttons[button] = true; | |
| // console.log(`${button} pressed`); | |
| update(); | |
| }) | |
| el.addEventListener('touchend', function(e) { | |
| e.preventDefault(); | |
| buttons[button] = false; | |
| // console.log(`${button} released`); | |
| update(); | |
| }); | |
| } | |
| async function update() { | |
| if (!motorA || !motorB) return; | |
| let a = 0, b = 0; | |
| // simple car mode | |
| if (buttons.right) { | |
| console.log("driving right"); | |
| b = 1; | |
| } else if (buttons.left) { | |
| console.log("driving left"); | |
| a = 1; | |
| } else if (buttons.forward) { | |
| console.log("driving forward"); | |
| a = 1; | |
| b = 1; | |
| } else if (buttons.backward) { | |
| console.log("driving back"); | |
| a = -1; | |
| b = -1; | |
| } else { | |
| console.log("stop driving"); | |
| } | |
| await motorA.setPower(a * 80); | |
| await motorB.setPower(b * 80); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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