firmware

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Hackaday Links: May 24, 2026

May 24, 2026 by 5 Comments

If your first-generation Chromecast was acting a little wonky this week, don’t worry. Contrary to fears online, the 2014 device hasn’t been excommunicated by Google. In a statement to Ars Technica, a rep for the search giant explained that the issue, which was keeping the devices from being able to stream video from services like Netflix, was temporary and should now be resolved. That said, the OG Chromecast hasn’t officially been supported since 2023, so it’s not clear how much longer they will remain operational. Google be Google, after all.

After resisting for years, this week, Mozilla finally relented and brought Web Serial to Firefox. While there’s been some debate about the wisdom of letting the Internet directly talk to hardware gadgets, anyone who’s flashed Meshtastic or configured their Betaflight-powered drone from the browser can attest to how convenient it is. In the announcement, Mozilla acknowledges that “most folks won’t use this API”, but points out that the “community of builders and tinkerers” (that’s us!) is sure to be excited about the news. They’ve even teamed up with Adafruit to ensure their web-based microcontroller workflows are compatible in Firefox 151 and beyond. If you give it a shot, let us know how it goes.

Speaking of hardware support, the Linux Vendor Firmware Service (LVFS) recently picked up a couple of big-name sponsors. As reported by It’s FOSS, this week, Lenovo, Dell, and HP have signed on as Premier-level sponsors to the tune of $100,000 per year. For those unfamiliar, LVFS offers a central repository where hardware vendors can upload firmware updates. On the client side, fwupd can be used to pull these updates down automatically without having to hunt around on each vendor’s website. The experienced players don’t need a service like LVFS, but it’s certainly one of those quality-of-life improvements that make the desktop experience a bit more accessible.

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Hacking Hard Drive Firmware

May 15, 2026 by 18 Comments

You probably flash new firmware on a variety of devices regularly, even though that’s rare for non-technical types. But what about your hard drive firmware? Most of us don’t want to touch our operating drives, so unless you are dealing with surplus drives or have a special project in mind, you may not think much about the firmware running your spinning rust storage. [I Code 4 Coffee] uses hard drives in an unusual way to exploit Xbox 360s, and wound up reverse engineering some drive firmware with an eye to making changes.

The analysis started with three hard drives and an SSD. Looking for people who’ve done similar work wasn’t as productive as you might think. There isn’t much call for modifying hard drive firmware, and what data there is can be outdated.

One thing that was available was firmware dumps taken with a PC-3000 data recovery tool. What follows is a deep dive down the hard drive rabbit hole. There are backdoor vendor commands and connections to the diagnostic RS-232 port on some drives. You can find the technical artifacts on GitHub.

We learned a few things, and we bet you will too. Another way to get into the hard drive’s firmware is via JTAG.

Open-Source eink firmware

Pocket-Sized E-Ink Gets A Firmware Upgrade

April 5, 2026 by 26 Comments

Not so long ago, e-ink devices were rare and fairly pricey. As they have become more common and cheaper, some cool form-factor devices have emerged that suffer from subpar software. [Concretedog] picked up just such a device, and that purchase led to the discovery of a cool open-source firmware project for this tiny gadget.

[Concretedog] described the process of loading the firmware, which is just about as easy a modification as one can make. You plug the e-ink display into your computer, visit a website, and can flash it right from there. Once the display is running the CrossPoint Reader firmware, it unlocks some new tricks on this affordable reader. The firmware lets you turn the device into a WiFi hotspot and upload books wirelessly, or it can connect to an existing network to add files that way. It also enables rotating the display and KOReader syncing if you have multiple devices you read from.

We love seeing the community step in and improve devices that are hardware-wise good, sometimes great, but come up lacking in the software or firmware department. Thanks [Concretedog] for sharing your experience with this device and the cool open-source firmware. Be sure to check out some other projects we’ve featured where a firmware swap breathed new life into the hardware.

Upgrading An Old Macbook With An Old Processor

February 8, 2026 by 19 Comments

The Core Duo processor from Intel may not have been the first multi-core processor available to consumers, but it was arguably the one that brought it to the masses. Unfortunately, the first Core Duo chips were limited to 32-bit at a time when the industry was shifting toward 64-bit. The Core 2 Duo eventually filled this gap, and [dosdude1] recently completed an upgrade to a Macbook Pro that he had always wanted to do by replacing the Core Duo processor it had originally with a Core 2 Duo from a dead motherboard.

The upgrade does require a bit more tooling than many of us may have access too, but the process isn’t completely out of reach, and centers around desoldering the donor processor and making sure the new motherboard gets heated appropriately when removing the old chip and installing the new one. These motherboards had an issue of moisture ingress which adds a pre-heating step that had been the cause of [dosdude1]’s failures in previous attempts. But with the new chip cleaned up, prepared with solder balls, and placed on the new motherboard it was ready to solder into its new home.

Upon booting the upgraded machine, the only hiccup seemed to be that the system isn’t correctly identifying the clock speed. A firmware update solved this problem, though, and the machine is ready for use. For those who may be wondering why one would do something like this given the obsolete hardware, we’d note that beyond the satisfaction of doing it for its own sake these older Macbooks are among the few machines that can run free and open firmware, and also that Macbooks that are a decade or older can easily make excellent Linux machines even given their hardware limitations.

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Will HP Create A Carfax System For PCs?

July 15, 2025 by 24 Comments

When buying used cars there are plenty of ways to check on their history. In many countries there are systems, like Carfax for parts of North America and Europe, that can provide crash history in some situations and alert a potential buyer of hidden damage. Not so for computers, where anyone can run an intensive mining, gaming, rendering, or AI application for years on hardware which might not otherwise show any outward signs of heavy use. And that’s just for hard use; there’s all kinds of other ways of damaging hardware. HP is hoping to solve this problem with a PC history report of sorts.

Aimed at the enterprise or business arena, where companies tend to follow replacement schedules for laptops and other hardware which might get discarded before reaching a true end-of-life, HP is suggesting adding a data recorder at the firmware level of some computers. This software would monitor the computer’s temperatures, SSD wear, and other telematics on the computer and store a record that could be viewed by a potential buyer when the IT department is ready to take them out of service. And, since it’s 2025, HP is also claiming that this system needs and uses an AI of some sort.

Although HP is billing this as a way to improve sustainability and limit e-waste, we’d theorize that even with a report like this available, the economic gain of a program like this would be marginal at best. While the idea of giving each decommissioned laptop a clean bill of health is noble, it’s hard to imagine overworked IT staff carefully curating device histories when most used enterprise machines are already sold by the pallet.

HP is also proposing something that sounds a lot like Intel’s Management Engine, which we’re not too thrilled about around here. And also keep in mind that this is a company that has failed to innovate in any industry-leading way for as long as we can remember so we won’t expect this system to be widely adopted anytime soon.

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Hackaday Links: June 22, 2025

June 22, 2025 by 16 Comments

Hold onto your hats, everyone — there’s stunning news afoot. It’s hard to believe, but it looks like over-reliance on chatbots to do your homework can turn your brain into pudding. At least that seems to be the conclusion of a preprint paper out of the MIT Media Lab, which looked at 54 adults between the ages of 18 and 39, who were tasked with writing a series of essays. They divided participants into three groups — one that used ChatGPT to help write the essays, one that was limited to using only Google search, and one that had to do everything the old-fashioned way. They recorded the brain activity of writers using EEG, in order to get an idea of brain engagement with the task. The brain-only group had the greatest engagement, which stayed consistently high throughout the series, while the ChatGPT group had the least. More alarmingly, the engagement for the chatbot group went down even further with each essay written. The ChatGPT group produced essays that were very similar between writers and were judged “soulless” by two English teachers. Go figure.

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Supercon 2024: Repurposing ESP32 Based Commercial Products

June 10, 2025 by 4 Comments

It’s easy to think of commercial products as black boxes, built with proprietary hardware that’s locked down from the factory. However, that’s not always the case. A great many companies are now turning out commercial products that rely on the very same microcontrollers that hackers and makers use on the regular, making them far more accessible for the end user to peek inside and poke around a bit.

Jim Scarletta has been doing just that with a wide variety of off-the-shelf gear. He came down to the 2024 Hackaday Superconference to tell us all about how you can repurpose ESP32-based commercial products.

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