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The Web Serial API landed in Firefox 151, allowing you to connect directly to microcontrollers, dev boards, 3D printers, power meters, and other serial-connected hardware from the web. Here's how it works:

Firefox for Web Developers

@webdevs.firefox.com

28 May

See our announcement post for more detail, demos, and docs hacks.mozilla.org/2026/05/web-...

hacks.mozilla.orgAnnouncing Web Serial Support in Firefox – Mozilla Hacks - the Web developer blogSupport for Web Serial in Firefox 151 for Desktop Firefox can now connect directly to microcontrollers, development boards, 3D printers, power meters, and other serial-connected hardware from the…

Bert

@bert.app

Yas!! At last!

11/6/26, 9:29 am0 reposts0 likes

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