If IRobot Falls, Hackers Are Ready To Wrangle Roombas

Things are not looking good for iRobot. Although their robotic Roomba vacuums are basically a household name, the company has been faltering financially for some time now. In 2024 there was hope of a buyout by Amazon, who were presumably keen to pull the bots into their Alexa ecosystem, but that has since fallen through. Now, by the company’s own estimates, bankruptcy is a very real possibility by the end of the year.

Hackaday isn’t a financial blog, so we won’t get into how and why iRobot has ended up here,  although we can guess that intense competition in the market probably had something to do with it. We’re far more interested in what happens when those millions of domesticated robots start getting an error message when they try to call home to the mothership.

We’ve seen this scenario play out many times before — a startup goes belly up, and all the sudden you can’t upload new songs to some weirdo kid’s media player, or the gadget in your fridge stops telling you how old your eggs are. (No, seriously.) But the scale here is unprecedented. If iRobot collapses, we may be looking at one of the largest and most impactful smart-gadget screw overs of all time.

Luckily, we aren’t quite there yet. There’s still time to weigh options, and critically, perform the kind of research and reverse engineering necessary to make sure the community can keep the world’s Roombas chugging along even if the worst happens.

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Running A Minecraft Server On A WiFi Light Bulb

WiFi-enabled ‘smart’ light bulbs are everywhere these days, and each one of them has a microcontroller inside that’s capable enough to run all sorts of interesting software. For example, [vimpo] decided to get one running a minimal Minecraft server.

The Bl602-equipped board inside the LED lightbulb. (Credit: vimpo, YouTube)
The Bl602-equipped board inside the LED lightbulb. (Credit: vimpo, YouTube)

Inside the target bulb is a BL602 MCU by Bouffalo Lab, that features not only a radio supporting 2.4 GHz WiFi and BLE 5, but also a single-core RISC-V CPU that runs at 192 MHz and is equipped with 276 kB of RAM and 128 kB flash.

This was plenty of space for the minimalist Minecraft server [vimpo] wrote several years ago. The project says it was designed for “machines with limited resources”, but you’ve still got to wonder if they ever thought it would end up running on a literal lightbulb at some point.

It should be noted, of course, that this is not the full Minecraft server, and it should only be used for smaller games like the demonstrated TNT run mini game.

Perhaps the next challenge will be to combine a large set of these light bulbs into a distributed computing cluster and run a full-fat Minecraft server? It seems like a waste to leave the BL602s and Espressif MCUs that are in these IoT devices condemned to a life of merely turning the lights on or off when we could have them do so much more.

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PLA mail being tested against a sword

3D Printed Mail Is A Modern Solution To An Ancient Problem

The human body and sharp objects don’t get along very well, especially when they are being wielded with ill-intent. Since antiquity there have been various forms of armor designed to protect the wearer, but thankfully these days random sword fights don’t often break out on the street. Still, [SCREEN TESTED] wanted to test the viability of 3D printed chain mail — if not for actual combat, at least for re-enactment purposes.

He uses tough PLA to crank out a bed worth of what looks like [ZeroAlligator]’s PipeLink Chainmail Fabric, which just so happens to be the trending result on Bambu’s MakerWorld currently. The video shows several types of mail on the printer, but the test dummy only gets the one H-type pattern, which is a pity — there’s a whole realm of tests waiting to be done on different mail patterns and filament types.

In any case, the mail holds up fairly well to puncture from scissors and screwdrivers — with a heavy sweater or proper gambeson (a quilted cloth underlayer commonly worn with armor) on underneath, it looks like it could actually protect you. To slashing blows, PLA holds up astoundingly well, barely marked even by slashes from an actual sword. As for projectiles, well, everyone knows that to an arrow, chain mail is made of holes, and this PLA-based armor is no different (as you can see at 8:30 in the video below).

If you want to be really safe when the world goes Mad Max, you’d probably want actual chain mail, perhaps from stainless steel. On the other hand, if someone tries to mug you on the way home from a con, cosplay armor might actually keep you safer than one might first suspect. It’s not great armor, but it’s a great result for homemade plastic armor.

Of course you’d still be better off with Stepahnie Kwolek’s great invention, Kevlar.

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