Hackaday Links: October 26, 2025

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There was a bit of a kerfuffle this week with the news that an airliner had been hit by space junk. The plane, a United Airlines 737, was operating at 36,000 feet on a flight between Denver and Los Angeles when the right windscreen was completely shattered by the impact, peppering the arm of one pilot with bits of glass. Luckily, the heavily reinforced laminated glass stayed intact, but the flight immediately diverted to Salt Lake City and landed safely with no further injuries. The “space junk” report apparently got started by the captain, who reported that they saw what hit them and that “it looked like space debris.”

We were a little skeptical of this initial assessment, mainly because the pilots and everyone aboard the flight were still alive, which we’d assume would be spectacularly untrue had the plane been hit by anything beyond the smallest bit of space junk. As it turns out, our suspicions were justified when Silicon Valley startup WindBorne Systems admitted that one of its high-altitude balloons hit the flight. The company, which uses HABs to gather weather data for paying customers, seems to have complied with all the pertinent regulations, like filing a NOTAM, so why the collision happened is a bit of a mystery.

Their blog post about the incident contains a clue, though, since they have made an immediate change to “minimize time spent between 30,000 and 40,000 feet,” which is the sweet spot for commercial aviation. They also state that future changes will allow them to monitor flight tracking data and autonomously avoid planes. From this, we gather that the balloons can at least control their altitude, which perhaps means this one somehow got stuck at 36,000 feet. We’d love to know more about these HABs; we wonder if there’s any way to track and recover these things like there is for radiosondes?

In other initially fake news, there was a bit of a stir in amateur radio circles with a report that Hytera ham radios were being banned from sale in the U.S. The report came in a video from Matt Covers Tech, and suggested that Hytera’s handy talkie radios had somehow fallen afoul of regulators. We did some checking around but couldn’t come up with anything to back up this claim until the indispensable Josh (KI6NAZ) over at Ham Radio Crash Course got ahold of the story and did his usual bang-up analysis. TL;DW — no, Hytera handy talkies are not being banned from sale in the U.S., but yes, the company does seem to be in a heap of trouble with the FCC and the federal government over some of their other shenanigans, to the point of felony indictments.

Back in the day, pranks were pretty simple and, with the possible exception of a burning poop-filled paper bag catching the bushes next to your front step on fire, mostly harmless. But pranks seem to scale with time and with technology, to the point where it’s now possible to stuff a dead-end street with 50 Waymos robotaxis. The stunt, which prankster Riley Walz describes in high-tech terms as “the world’s first Waymo DDoS” attack — we seriously doubt that — was carried out in a decidedly low-tech manner by enlisting 50 co-conspirators to simultaneously order a ride to San Francisco’s longest dead-end street. The Jaguar robotaxis dutifully reported to the address, packing the narrow street with waiting cars. Nobody got into the cars, resulting in a $5 missed-ride charge, but even if the riders did show up, we assume the autonomous cars would have had the robot equivalent of a stroke trying to figure out how to get out of each other’s way. Like most pranks, it was pretty cool as long as you weren’t the one on the receiving end. It’s not clear whether there were any repercussions for Riley — again, we doubt it — but we can imagine there would have been had anyone on that street needed fire or EMS while the attack was in progress.

If you’ve been worried about AI, you’re not alone. And while there’s plenty to be concerned about, according to Andy Masley, water use by AI data centers shouldn’t be one of them. In his excellent analysis, he looks at all the details of AI water use and comes to the convincing conclusion that, all things considered, U.S. data centers really don’t use that much water — about 0.2% of the 132 billion gallons consumed nationwide every day. Even then, that fraction of a percent includes the water needed to generate the electricity for those data centers; take that out, and the number drops to about 50 million gallons a day. And those figures are for all data centers; limited to just AI data centers, that number drops to about 0.008% of the freshwater consumed daily nationwide. We haven’t checked Andy’s math, of course, nor have we vetted his bona fides or checked to see if he has an axe to grind in this area. But it’s an eye-opening article nonetheless.

And finally, if you just can’t get enough of the surveillance state while you’re out in the world, you can now extend pervasive monitoring tech into the very heart of your home with the world’s first toilet wearable. The aptly named Throne One clips to the rim of your toilet and uses an array of sensors to monitor your gut health. The company doesn’t specify what sensors are used, but since the main data points seem to be where your poop falls on the Bristol Stool Scale and measuring hydration by urine color, there’s got to be a camera in there somewhere. There’s also allowance for multiple users, and while we suppose the polar opposite of facial recognition could be used to distinguish one butt from another, we’d imagine it would be simpler to determine who’s using the toilet via Bluetooth. There’s also a microphone, to listen in on “urinary dynamics” for those who pee standing up. Honestly, while we’d never actually use this thing, we’d love to do a teardown and see what’s inside. New in box only, of course.

11 thoughts on “Hackaday Links: October 26, 2025

  1. I think that, hitting a 737 aside, that WindBorne Systems has some interesting technology. 50 vertical profiles per flight is just amazing, if the economics work out vs. the traditional radiosonde flight. I’d like to find out more about the company.

    1. I’ve had discussions with people regarding the regulations for smaller balloon, ham radio balloons in Canada and the US, people are shocked at how lacks the regulations are. It’s kind of amusing.

      Those conversations were trigger by the US shooting down “Chinese spy balloons”; where in only one was correct.

  2. Space debris or space balloon, you guys forgot flying animal. Rüppell’s vulture are known to reach 37,000 and did get hit by a plane back in 1973. Rüppell’s vulture are mainly across central Africa though but there could be some type of bird in US that is capable of reaching 36,000 when the plane hit it

    1. What fascinating things there are in nature! “The birds have a specialized variant of the hemoglobin alphaD subunit; this protein has a great affinity for oxygen, which allows the species to absorb oxygen efficiently despite the low partial pressure in the upper troposphere.”

  3. Yes, the toilets should be able to identify the user by their butthole, they are as unique as fingerprints. Artist Salvador Dali used to ask his visitors to sit on a lump of damp clay, cheeks parted, to make an impression of the orifice. He got the butthole imprints of many celebrities including Marilyn Monroe and John F. Kennedy. He first determined that everyone’s anus always has either 35, or 37 creases (since verified ‘scientifically’).

  4. The simple fact that Waymo and these other startups haven’t used anything learned in 40 years of video game AI, not to mention scientific research, on how to avoid collisions and jams. I will absolutely guarantee you that these startups could get a leg up employing some game devs who had to deal with players screwing with the AI.

    That guy did them a favor stress testing the system, now they can look at edge cases. Maybe not 50 rides down a dead end street. But even 5 or 6 headed to a party could be a goof. Why they don’t offer a discount to people that could ride-share is also a little crazy, still room to keep some of the profit.

    Possibly some of this is the culture divide between engineers used to doing things logically and startups run by massive ‘personalities’ (for lack of a better word). The company may also have a need to get something out in public for press and funding, even if better results could be achieved with virtual research (or mass transit)

  5. What bothers me about this incident is that the FAA requires ALL but ultralights, and a few other small aircraft to have a working radar transponder, with a code assigned by Air Traffic Control for the particular flight, as well as ADS-B Out capabilities, especially at these altitudes. They can be seen on the various ADS-B websites, and HABs even have their own icons. The only things that I can imagine (at the time of this writing) might have happened is that either the ADS-B device on board failed in flight, wasn’t checked for operation before flight, or there wasn’t one on board to begin with.

    For those unfamiliar with ADS-B, it is a burst data transmission system that integrates Global Navigation Satellite System, including GPS (USA), Galilileo (EU), GLOSNASS (Russia), etc. position and ground speed data, some sort of altitude data (aircraft use pressure altitude), and a 24-bit binary code assigned to each aircraft with the home country registration. This code is shown as a 6-digit hexadecimal code for each received burst data packet. Some aircraft also incorporate ADS-B In, which displays nearby aircraft, and warns the pilot(s) of other aircraft getting close to their aircraft with verbal announcements, and alarms.

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