A small tool to view real-world ActivityPub objects as JSON! Enter a URL
or username from Mastodon or a similar service below, and we'll send a
request with
the right
Accept
header
to the server to view the underlying object.
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"content": "<p>Google is a massive company, so there's a lot of people who join or leave every year - and some of the departing individuals feel compelled to post a manifesto rationalizing their decision to move on.</p><p>I spent ~11 years at Google and must have read at least 50 of these, each and every one claiming that the company has "lost its way" in a different fashion. In the end, I stopped paying attention - and I sure wasn't interested in writing my own.</p><p>By the end of the day, it is just a workplace: it has its charms and dysfunctions, just like any other company. A lot of these charms and dysfunctions are not about a unique culture or a particular executive vision; they are a simple function of the company's size, age, revenue structure, and regulatory pressures.</p><p>There's another manifesto making rounds on Hackernews today [1], and I think some of its observations are pretty good; for example, Google is exceptionally risk-averse as a consequence of having a remarkably robust revenue stream (= no need to rock the boat) coupled with extreme legal and regulatory risks (= a lot of downside if you try). But I think it's wrong to paint this as a simple problem that a new CEO or a different perf process could fix. Today, there's no "shoot from the hip" alternative for a preeminent and wildly profitable ad tech company of 200k people. It's a nice dilemma for Google to have, but there's no going back to a startup culture. If you want a fast-paced environment, a clarity of purpose, and a razor-sharp focus on outcomes for your users, you probably have to look somewhere else.</p><p>[1] <a href=\"https://medium.com/@pravse/the-maze-is-in-the-mouse-980c57cfd61a\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">medium.com/@pravse/the-maze-is</span><span class=\"invisible\">-in-the-mouse-980c57cfd61a</span></a></p>",
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"en": "<p>Google is a massive company, so there's a lot of people who join or leave every year - and some of the departing individuals feel compelled to post a manifesto rationalizing their decision to move on.</p><p>I spent ~11 years at Google and must have read at least 50 of these, each and every one claiming that the company has "lost its way" in a different fashion. In the end, I stopped paying attention - and I sure wasn't interested in writing my own.</p><p>By the end of the day, it is just a workplace: it has its charms and dysfunctions, just like any other company. A lot of these charms and dysfunctions are not about a unique culture or a particular executive vision; they are a simple function of the company's size, age, revenue structure, and regulatory pressures.</p><p>There's another manifesto making rounds on Hackernews today [1], and I think some of its observations are pretty good; for example, Google is exceptionally risk-averse as a consequence of having a remarkably robust revenue stream (= no need to rock the boat) coupled with extreme legal and regulatory risks (= a lot of downside if you try). But I think it's wrong to paint this as a simple problem that a new CEO or a different perf process could fix. Today, there's no "shoot from the hip" alternative for a preeminent and wildly profitable ad tech company of 200k people. It's a nice dilemma for Google to have, but there's no going back to a startup culture. If you want a fast-paced environment, a clarity of purpose, and a razor-sharp focus on outcomes for your users, you probably have to look somewhere else.</p><p>[1] <a href=\"https://medium.com/@pravse/the-maze-is-in-the-mouse-980c57cfd61a\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">medium.com/@pravse/the-maze-is</span><span class=\"invisible\">-in-the-mouse-980c57cfd61a</span></a></p>"
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"content": "<p>Setting up an electronics workshop. This expands on a couple of recommendations I posted here several days ago: </p><p><a href=\"https://lcamtuf.substack.com/p/setting-up-an-electronics-workshop\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/setting</span><span class=\"invisible\">-up-an-electronics-workshop</span></a></p>",
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"en": "<p>Setting up an electronics workshop. This expands on a couple of recommendations I posted here several days ago: </p><p><a href=\"https://lcamtuf.substack.com/p/setting-up-an-electronics-workshop\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/setting</span><span class=\"invisible\">-up-an-electronics-workshop</span></a></p>"
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"content": "<p>The aliens who keep sending all these peace delegations might be getting concerned by now</p>",
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"en": "<p>The aliens who keep sending all these peace delegations might be getting concerned by now</p>"
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"content": "<p>Stealth edit: this originally contained a couple of recommendations for setting up an electronics workshop. I added some illustrations and turned it into a fully-fledged post:</p><p><a href=\"https://lcamtuf.substack.com/p/setting-up-an-electronics-workshop\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/setting</span><span class=\"invisible\">-up-an-electronics-workshop</span></a></p>",
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"en": "<p>Stealth edit: this originally contained a couple of recommendations for setting up an electronics workshop. I added some illustrations and turned it into a fully-fledged post:</p><p><a href=\"https://lcamtuf.substack.com/p/setting-up-an-electronics-workshop\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/setting</span><span class=\"invisible\">-up-an-electronics-workshop</span></a></p>"
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"content": "<p>New electronics post: what's in an op-amp?</p><p><a href=\"https://lcamtuf.substack.com/p/whats-in-an-op-amp\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/whats-i</span><span class=\"invisible\">n-an-op-amp</span></a></p>",
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"en": "<p>New electronics post: what's in an op-amp?</p><p><a href=\"https://lcamtuf.substack.com/p/whats-in-an-op-amp\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/whats-i</span><span class=\"invisible\">n-an-op-amp</span></a></p>"
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"content": "<p>...for this kind of SMD work, you probably want to use hot air.</p>",
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"en": "<p>...for this kind of SMD work, you probably want to use hot air.</p>"
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"content": "<p>Now, I don't mean this as mockery. It's pretty encouraging to see how many people rework their motherboards. That said...</p>",
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"en": "<p>Now, I don't mean this as mockery. It's pretty encouraging to see how many people rework their motherboards. That said...</p>"
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"content": "<p>Afternoon project: CryptMaster 2001.</p><p>I shared some photos before, but this has more details about the hardware and the software side: <a href=\"https://lcamtuf.substack.com/p/afternoon-project-cryptmaster-2001\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/afterno</span><span class=\"invisible\">on-project-cryptmaster-2001</span></a></p>",
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"content": "<p>OK - my longest electronics post yet: the basics of signal amplification</p><p><a href=\"https://lcamtuf.substack.com/p/the-basics-of-signal-amplification\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/the-bas</span><span class=\"invisible\">ics-of-signal-amplification</span></a></p>",
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"content": "<p>Forces of nature, designs of man: <a href=\"https://lcamtuf.substack.com/p/forces-of-nature-designs-of-man\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/forces-</span><span class=\"invisible\">of-nature-designs-of-man</span></a></p>",
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"content": "<p>Fear and loathing in MCU land, part 6: DMA on Cortex-M7</p><p><a href=\"https://lcamtuf.substack.com/p/mcu-land-part-6-dma-on-cortex-m7\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/mcu-lan</span><span class=\"invisible\">d-part-6-dma-on-cortex-m7</span></a></p>",
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"content": "<p>New MCU article (yay): IRQ and chill on Cortex-M7</p><p><a href=\"https://lcamtuf.substack.com/p/mcu-land-part-5-irq-and-chill-on\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/mcu-lan</span><span class=\"invisible\">d-part-5-irq-and-chill-on</span></a></p>",
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"content": "<p>OK, done! Last night, I worked on a write-up about digital signal processing with a bare MCU. Moments ago, I wrapped it up with a demo video. Enjoy!</p><p><a href=\"https://lcamtuf.substack.com/p/mcu-land-part-4-building-an-audio\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/mcu-lan</span><span class=\"invisible\">d-part-4-building-an-audio</span></a></p><p>Yes, it's a stupid project, but the article includes detailed schematics and a link to meticulously-documented source code.</p>",
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"content": "<p>New substack post: baby steps with ARM Cortex-M7</p><p><a href=\"https://lcamtuf.substack.com/p/mcu-land-part-3-baby-steps-with-cortex\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/mcu-lan</span><span class=\"invisible\">d-part-3-baby-steps-with-cortex</span></a></p>",
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"content": "<p>New Substack article: Fear and loathing in the land of MCUs, part 2 - mysteries of the SPI bus</p><p><a href=\"https://lcamtuf.substack.com/p/mcu-land-part-2-mysteries-of-the/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/mcu-lan</span><span class=\"invisible\">d-part-2-mysteries-of-the/</span></a></p>",
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"content": "<p>New Substack article: Fear and loathing in the land of MCUs</p><p><a href=\"https://lcamtuf.substack.com/p/fear-and-loathing-in-the-world-of\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/fear-an</span><span class=\"invisible\">d-loathing-in-the-world-of</span></a></p>",
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"content": "<p>Time is a flat circle and all that.</p><p>It used to be that if you had a need for an embedded processor, you'd either write code for a "bare metal" microcontroller, or grab a compact real-time OS of some sort (the latter mostly if you needed a complete networking stack, a filesystem, or something like that).</p><p>Nowadays, most people just get a powerful system-on-a-chip (SoC) running Linux, even if their project is as simple as blinking some Christmas lights. But Linux does Linux things, and getting predictable and performant hardware I/O from userspace is a crapshoot. You do 'echo 1 >/sys/class/gpio/gpio60/value' and some indeterminate time later, a pin changes state. Forget gigabit data transfer speeds - you might have a hard time playing back audio on a speaker.</p><p>So now, some SoCs come with a separate processor on the die - a Programmable Real-time Unit (PRU). It's a semi-standalone device that lets you run simple code in a "bare metal" environment with a bit of RAM and program memory to orchestrate your GPIO:</p><p><a href=\"https://beagleboard.org/pru\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">beagleboard.org/pru</span><span class=\"invisible\"></span></a></p><p>In this model, Linux running on the main CPU just tells the PRU "please play back fart sounds on pin 60", and your code running on the PRU handles the particulars of toggling the pin in real time.</p><p>I suspect it's just a matter of time before we find a way to run Linux on the PRU, and then demand a second PRU to solve the I/O issues that would arise.</p>",
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"en": "<p>Time is a flat circle and all that.</p><p>It used to be that if you had a need for an embedded processor, you'd either write code for a "bare metal" microcontroller, or grab a compact real-time OS of some sort (the latter mostly if you needed a complete networking stack, a filesystem, or something like that).</p><p>Nowadays, most people just get a powerful system-on-a-chip (SoC) running Linux, even if their project is as simple as blinking some Christmas lights. But Linux does Linux things, and getting predictable and performant hardware I/O from userspace is a crapshoot. You do 'echo 1 >/sys/class/gpio/gpio60/value' and some indeterminate time later, a pin changes state. Forget gigabit data transfer speeds - you might have a hard time playing back audio on a speaker.</p><p>So now, some SoCs come with a separate processor on the die - a Programmable Real-time Unit (PRU). It's a semi-standalone device that lets you run simple code in a "bare metal" environment with a bit of RAM and program memory to orchestrate your GPIO:</p><p><a href=\"https://beagleboard.org/pru\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"\">beagleboard.org/pru</span><span class=\"invisible\"></span></a></p><p>In this model, Linux running on the main CPU just tells the PRU "please play back fart sounds on pin 60", and your code running on the PRU handles the particulars of toggling the pin in real time.</p><p>I suspect it's just a matter of time before we find a way to run Linux on the PRU, and then demand a second PRU to solve the I/O issues that would arise.</p>"
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"content": "<p>Weekend projects: recreating three classic games in a minimalistic way (source code and hardware details included).</p><p><a href=\"https://lcamtuf.substack.com/p/recreating-classic-games-with-a-bare\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">lcamtuf.substack.com/p/recreat</span><span class=\"invisible\">ing-classic-games-with-a-bare</span></a></p>",
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"content": "<p>Having used Linux for something like 25 years, I think there's just one immutable rule: don't even bother learning the syntax of the firewall tool, they're gonna replace it in two years anyway.</p>",
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