<![CDATA[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.]]>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:

]]>https://board.circlewithadot.net/topic/9e0e0eb3-674c-496d-8d5b-4e29db6ec468/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.RSS for NodeFri, 05 Jun 2026 09:03:21 GMTThu, 28 May 2026 14:37:49 GMT60<![CDATA[Reply to 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. on Tue, 02 Jun 2026 12:26:19 GMT]]>@hisold and you're definitely on Firefox 151 (desktop)?

]]>https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116680502765907919https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116680502765907919Tue, 02 Jun 2026 12:26:19 GMT<![CDATA[Reply to 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. on Tue, 02 Jun 2026 11:27:47 GMT]]>@firefoxwebdevs I just tried it again in a onclick function of a button. It just errors navigator.serial is undefined every time I click the button. Same when using the click event.

]]>https://board.circlewithadot.net/post/https://toot.io/users/hisold/statuses/116680272626801073https://board.circlewithadot.net/post/https://toot.io/users/hisold/statuses/116680272626801073Tue, 02 Jun 2026 11:27:47 GMT<![CDATA[Reply to 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. on Tue, 02 Jun 2026 11:02:17 GMT]]>@hisold requestPort needs to be called from "user activation", like the click of a button element.

]]>https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116680172327074416https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116680172327074416Tue, 02 Jun 2026 11:02:17 GMT<![CDATA[Reply to 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. on Tue, 02 Jun 2026 10:47:53 GMT]]>@firefoxwebdevs This is really cool and I've been waiting for this feature for so long. I'm excited to use it but I still don't understand how. The permission is required but what triggers the popup to grant the permission?

]]>https://board.circlewithadot.net/post/https://toot.io/users/hisold/statuses/116680115702203428https://board.circlewithadot.net/post/https://toot.io/users/hisold/statuses/116680115702203428Tue, 02 Jun 2026 10:47:53 GMT<![CDATA[Reply to 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. on Sat, 30 May 2026 23:23:18 GMT]]>@firefoxwebdevs WHAT THE FUCK! STOP FUCKING COPYING CHROME'S HELLSCAPE NIGHTMARES!]]>https://board.circlewithadot.net/post/https://convenient.email/objects/2c704a81-206a-1b71-66d2-977170782462https://board.circlewithadot.net/post/https://convenient.email/objects/2c704a81-206a-1b71-66d2-977170782462Sat, 30 May 2026 23:23:18 GMT<![CDATA[Reply to 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. on Sat, 30 May 2026 23:12:34 GMT]]>@niutech How many users understand what is being asked of them?

How much will these prompts proliferate?

]]>https://board.circlewithadot.net/post/https://infosec.exchange/users/tasket/statuses/116666056997993498https://board.circlewithadot.net/post/https://infosec.exchange/users/tasket/statuses/116666056997993498Sat, 30 May 2026 23:12:34 GMT<![CDATA[Reply to 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. on Sat, 30 May 2026 11:51:36 GMT]]>@tasket @firefoxwebdevs How exactly is it a security nightmare when it needs explicit user consent?

]]>https://board.circlewithadot.net/post/https://fosstodon.org/users/niutech/statuses/116663379300666390https://board.circlewithadot.net/post/https://fosstodon.org/users/niutech/statuses/116663379300666390Sat, 30 May 2026 11:51:36 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 23:48:36 GMT]]>@firefoxwebdevs not a security nightmare at all...

/s

]]>https://board.circlewithadot.net/post/https://infosec.exchange/users/tasket/statuses/116654874077156468https://board.circlewithadot.net/post/https://infosec.exchange/users/tasket/statuses/116654874077156468Thu, 28 May 2026 23:48:36 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 21:02:24 GMT]]>@firefoxwebdevs ok, this is actually great news.

]]>https://board.circlewithadot.net/post/https://masto.hackers.town/users/mav/statuses/116654220520547367https://board.circlewithadot.net/post/https://masto.hackers.town/users/mav/statuses/116654220520547367Thu, 28 May 2026 21:02:24 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 20:36:14 GMT]]>@hrw @firefoxwebdevs
No they really need to focus on AI Slop and soccer and weather widget that appear without consent first

]]>https://board.circlewithadot.net/post/https://ennexis.de/ap/users/116511607267168125/statuses/116654117642260930https://board.circlewithadot.net/post/https://ennexis.de/ap/users/116511607267168125/statuses/116654117642260930Thu, 28 May 2026 20:36:14 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 20:33:58 GMT]]>@firefoxwebdevs
This is what we want!
Not stupid soccer widgets appearing without consent and AI Slop,
but actual features and improvements to the browser!!!

You are on thin ice still but more of this and no bs please.

Maybe you might even stop alienating your userbase then

]]>https://board.circlewithadot.net/post/https://ennexis.de/ap/users/116511607267168125/statuses/116654108725878728https://board.circlewithadot.net/post/https://ennexis.de/ap/users/116511607267168125/statuses/116654108725878728Thu, 28 May 2026 20:33:58 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 17:07:16 GMT]]>@firefoxwebdevs

Finally... When WebUSB so I would not need Chromium to configure keyboard?

]]>https://board.circlewithadot.net/post/https://society.oftrolls.com/users/hrw/statuses/116653295979423254https://board.circlewithadot.net/post/https://society.oftrolls.com/users/hrw/statuses/116653295979423254Thu, 28 May 2026 17:07:16 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 16:21:04 GMT]]>@firefoxwebdevs @Schepp
I write as someone that has developed software, uses real & USB based serial, various USB devices (MTP, Storage, Minidisc, camera, capture, audio), PDFs, built websites, desktop & embedded programs.
Every week there is new garbage program using the Web Browser instead of a sane GUI framework.
A web Browser is now a privacy leaking monster.
Firefox-bin 517.5 MiB one Tab!
That's obscene.
KATE 161.9
Okular with a giant PDF manual: 206 MiB. It's the Swiss Army Knife viewer.

]]>https://board.circlewithadot.net/post/https://mastodon.ie/users/raymaccarthy/statuses/116653114266048866https://board.circlewithadot.net/post/https://mastodon.ie/users/raymaccarthy/statuses/116653114266048866Thu, 28 May 2026 16:21:04 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 16:01:03 GMT]]>@firefoxwebdevs @Schepp
What about restore GUI that follows the system?
Fix printing bugs.
Offer paginated view of a website.
Fix bugs.
Strip all viewers except Web page (no PDF).
Fix bugs.
Fix GUI.
Privacy.

I do not want WebApps, or controlling serial or USB devices or MIDI via a web page.

I want a WEB BROWSER. Something that fetches webpages, renders HTML/CSS and allows disabling per item of content not from the domain.

Listen to real users! But it's nearly impossible to send feedback!

]]>https://board.circlewithadot.net/post/https://mastodon.ie/users/raymaccarthy/statuses/116653035570937025https://board.circlewithadot.net/post/https://mastodon.ie/users/raymaccarthy/statuses/116653035570937025Thu, 28 May 2026 16:01:03 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 15:29:34 GMT]]>@firefoxwebdevs something like https://usevia.app/ https://launcher.keychron.com/

Same idea as Web Serial, just different hardware API. Usecase is the same - controlling and configuring hardware.

VIA and Keychron Launcher let me configure my keyboard and mouse without having to download a windows-only "driver" and run it on wine with terrible results.]]>https://board.circlewithadot.net/post/https://shigusegubu.club/objects/ee162d4c-ebee-42ad-a2b8-eb6f48b7772fhttps://board.circlewithadot.net/post/https://shigusegubu.club/objects/ee162d4c-ebee-42ad-a2b8-eb6f48b7772fThu, 28 May 2026 15:29:34 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 15:19:16 GMT]]>@hj which sites do you use that use it, or what are your use-cases for it as a developer?

]]>https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116652871255896758https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116652871255896758Thu, 28 May 2026 15:19:16 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 15:12:41 GMT]]>@firefoxwebdevs I hope you implement at least WebHID because it's very popular and lack of support for it in Firefox just drives popularity of Electron and Chromium(-based browsers)]]>https://board.circlewithadot.net/post/https://shigusegubu.club/objects/3b5c4190-e5b8-4aa7-8588-8b71ffde3322https://board.circlewithadot.net/post/https://shigusegubu.club/objects/3b5c4190-e5b8-4aa7-8588-8b71ffde3322Thu, 28 May 2026 15:12:41 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 15:01:21 GMT]]>@hj Web Serial is the second API we've applied this new permission flow to, the other being WebMIDI. We'll continue to look at other APIs on an individual basis.

]]>https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116652800856459379https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116652800856459379Thu, 28 May 2026 15:01:21 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 14:59:17 GMT]]>@Schepp developer feedback, and finding a satisfactory flow that communicates the security and privacy implications.

This is the second API we've done this with, the other being WebMIDI. We're looking at other similar APIs one at a time.

]]>https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116652792690199704https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116652792690199704Thu, 28 May 2026 14:59:17 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 14:58:18 GMT]]>@firefoxwebdevs

https://mozilla.github.io/standards-positions/#webusb
https://mozilla.github.io/standards-positions/#webhid]]>https://board.circlewithadot.net/post/https://shigusegubu.club/objects/32f59b5b-b027-41f3-bd37-cbb58ffdf11chttps://board.circlewithadot.net/post/https://shigusegubu.club/objects/32f59b5b-b027-41f3-bd37-cbb58ffdf11cThu, 28 May 2026 14:58:18 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 14:57:36 GMT]]>@hj what do you mean by 'ok' here?

]]>https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116652786062825379https://board.circlewithadot.net/post/https://mastodon.social/ap/users/115667120638353806/statuses/116652786062825379Thu, 28 May 2026 14:57:36 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 14:54:25 GMT]]>@firefoxwebdevs so Web Serial is OK but WebHID and WebUSB are not?]]>https://board.circlewithadot.net/post/https://shigusegubu.club/objects/063d7541-5e51-4db3-aefa-ffe391bbb3c7https://board.circlewithadot.net/post/https://shigusegubu.club/objects/063d7541-5e51-4db3-aefa-ffe391bbb3c7Thu, 28 May 2026 14:54:25 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 14:50:53 GMT]]>@firefoxwebdevs what motivated you to implement Web Serial API, after so many years of not implementing it? Also, is this an outlook for Web USB and/or Web Bluetooth?

]]>https://board.circlewithadot.net/post/https://mastodon.social/users/Schepp/statuses/116652759657255883https://board.circlewithadot.net/post/https://mastodon.social/users/Schepp/statuses/116652759657255883Thu, 28 May 2026 14:50:53 GMT<![CDATA[Reply to 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. on Thu, 28 May 2026 14:39:43 GMT]]>cc @meshcore

]]>https://board.circlewithadot.net/post/https://hachyderm.io/users/schmidt/statuses/116652715787874949https://board.circlewithadot.net/post/https://hachyderm.io/users/schmidt/statuses/116652715787874949Thu, 28 May 2026 14:39:43 GMT