wedo2_web_bluetooth_hub_connect_and_led_color_change.ts

1import { WeDo2SmartHub, Color } from 'wedo2-sdk';
2
3/**
4 * Note: This must be called from a user-initiated gesture (e.g., a button click)
5 * because of Web Bluetooth security requirements.
6 */
7async function startWeDo2() {
8    try {
9        // 1. Request the device and connect
10        const hub = new WeDo2SmartHub();
11        await hub.connect();
12        
13        console.log(`Connected to: ${hub.name}`);
14
15        // 2. Change the LED color to Green
16        await hub.led.setColor(Color.GREEN);
17
18        // 3. Optional: Run a motor if connected to Port 1
19        // const motor = hub.getMotor(1);
20        // await motor.setPower(50);
21        
22        // Listen for disconnects
23        hub.onDisconnected(() => {
24            console.log('Hub disconnected');
25        });
26
27    } catch (error) {
28        console.error('Connection failed:', error);
29    }
30}
31
32// Example usage in a web environment
33document.getElementById('connectButton')?.addEventListener('click', () => {
34    startWeDo2();
35});