BLE Device Scanner (Web Bluetooth)

Pick a BLE device, connect, list services/characteristics, and optionally subscribe to notifications.

Idle

Discovery

Filter (name contains)

Used to pre-fill a name filter. Web Bluetooth still shows a chooser.

Optional services (comma-separated UUIDs)

Helps access those services after connect.

Use passive scan (if supported) acceptAllDevices

Web Bluetooth

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Secure context

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Passive scan API

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Selected device

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Device id

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Connected

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Tip: Battery is UUID 0x180F, level char 0x2A19. Device Information is 0x180A.

If you don’t see your device:

Use Chrome/Edge on HTTPS.
Make sure Bluetooth is on and the device is advertising.
Try leaving acceptAllDevices enabled.
Some OSes require location services enabled for BLE scanning.
Be sure Experimental Web Platform features and Web Bluetooth are enabled.
chrome://flags/#enable-experimental-web-platform-features