77 comments

  • btown2 days ago
    > I found out about the data stream from https://iss-mimic.github.io/Mimic/, which has considerably more and more interesting stats than just how full the piss tank is.

    > I will not be adding any of them.

    This, right here, is how you communicate non-goals of a project. Just perfect open-source communication best practices. We all stand to learn from this project.

    (Though, predictably, some of us sit to interact with it.)

    • voxelghost1 day ago
      I don't know why, but I imagine a situation where all communication has broken down, and the only working sensor is the one in the piss-tank, and the astronauts have to communicate in morse by modulating the delta in the tank. And some guy with ADHD, and this menu bar app installed, is going to figure out whats going on what is going on, and save them all. (Hey, Hollywood - if this turns into a movie - I want my royalties)
      • ffsm81 day ago
        > Hey, Hollywood - if this turns into a movie - I want my royalties

        We already have precident on that topic via that short story about the reverse isekai airplane carrier to ancient Rome that was written on Reddit in early 2010s.

        By writing the original on a social media platform you've effectively given full copyright to this company. If royalties need to be paid, they'd be paid to yc, not you

        • Lvl999Noob1 day ago
          > We already have precident on that topic via that short story about the reverse isekai airplane carrier to ancient Rome that was written on Reddit in early 2010s

          Can you please talk about this some more? A cursory search did not give me anything. What short story are you talking about and which adaptation of it?

            • bredren1 day ago
              Fwiw, this sounds like a take on the novel and subsequent franchise 1632. This sci-fi/historical fiction has a quarterly fan fiction compilation that has continued even after the original author’s death.
            • lobsterthief1 day ago
              Such a sad tale. I’d love to watch a documentary about this.
              • jen729w1 day ago
                That's not what I took from that article?

                > On October 21, 2011, Reddit administrators explained that the licensing terms were designed to protect the site from potential legal action, and that they did not intend to block the production of the movie.

        • dartos1 day ago
          Tho most likely they wouldn’t pay out any royalties and if there is legal action, they’ll just count it against the profits of the movie and record the whole thing as a wash and pay no taxes and no royalties.
        • pavel_lishin1 day ago
          > We already have precident on that topic via that short story about the reverse isekai airplane carrier to ancient Rome that was written on Reddit in early 2010s.

          ... do you mean precedent of a scifi premise from social media being turned into a movie? or the precedent of a piece of media using a piss-tank's levels as a means of communication?

          • ffsm81 day ago
            I meant the precedent of wherever he'd be able to get royalties for something he wrote on a social media website.

            you're giving full copyright to the social media website you're posting on. If someone wanted to buy a licence to use this - whatever it might be - the discussion would be between the social media platform and the licensee. the original author of the work would not have any stake in that theoretical situation.

            If you were wondering which specific case I'm referring to, ForHackernews linked to the wiki article. there is a small note on the licensing issue at the end there.

            https://news.ycombinator.com/item?id=42509955

            From what I remember, he had gotten a WB offer - which ultimately didn't pan out because a licensing agreeming couldn't occur. He'd have had to rewrite the story off-reddit for them to be able to license it. And that never happened.

            (Well, he did rewrite it - but probably took too long, so the window of opportunity had already closed and it was never made into an actual movie)

            • DamonHD1 day ago
              Your claim is simply untrue AFAIK.

              A social media site typically takes a soft licence allowing it to store and reproduce your content (which is needed to be able to function), and maybe use it in marketing. Some go a little further, but please show me one mainstream site that takes over all your (copy)rights when you post?

              • ffsm81 day ago
                You might be correct that I'm mistaken wrt the intellectual property of comments. I'm not an IP lawyer and cannot state it with confidence one way or another.

                What I feel comfortable stating is however that we have precident for the exact scenario the person I responded to (wanting royalties for a storyline they posted on a social media website) and this precident showed that are least the lawyers of WB were of the opinion that a rewrite outside of any social media platform was necessary.

      • speed_spread17 minutes ago
        There's also the scenario where a pattern of intelligence is found in the noise from the life support sensors telemetry, halfway between Poltergeist and Contact.
      • dhosek1 day ago
        The hardest thing for me to believe in The Martian was that one of the astronauts would have brought a book with a printed ASCII table in it.
        • It wasn't a book, it was on Johansen's laptop. And the ASCII was for communicating by pointing the camera on the mars rover, because it couldn't be positioned precisely enough for 26 different positions.
        • elygre1 day ago
          I love how that’s the hardest thing to believe.
          • sudhirj1 day ago
            Why, wasn’t The Martian an example of hard sci-fi, a story that conforms strongly to the known laws of physics? Not necessarily probability, economics or politics, but hard sci-fi is written to be plausible.
            • II2II9 hours ago
              Even hard science fiction takes liberties since it pushes the boundaries of science or engineering. It explores the plausible, rather than what has been accomplished. If it didn't do so, it would not differ all that much from regular fiction (i.e. the story may be made up, but it is anchored in everyday reality).

              As for the ASCII table, I wouldn't be surprised if it is one of the most commonly reproduced data tables in print and I would be surprised if it wasn't the mostly commonly reproduced table digitally. Virtually every *ix system will have a copy of it. The documentation for most development tools will probably have it. All you need is someone technically inclined in your life, which you will almost certainly have on a mission to Mars, and you will likely have a copy of an ASCII table (whether anyone knows it is there or not).

            • simpaticoder1 day ago
              The story is enjoyable, but like most such tales is amounts to building a string of deadly obstacles for the protagonist and then giving him just enough to survive each one. (FWIW the least realistic step was the ship turning around to get him, because spaceships typically don't carry any extra fuel. But in general there were too many resources lying around for him to use, especially the unattended lift vehicle. The plutonium core and the potatoes were a nice touch, though.)
              • II2II9 hours ago
                > FWIW the least realistic step was the ship turning around to get him, because spaceships typically don't carry any extra fuel.

                The turning around and returning to Mars bit may have been realistic. They would have needed fuel to get into Earth orbit. (That said, the timing to return to Mars in any sane trajectory would likely be off.) The real problem would be getting into Mars orbit at the end of the return journey.

              • SonicScrub1 day ago
                It's been a while since I've read the book / seen the movie, but I believe the ship intercepted a resupply payload launched from earth as it was performing it's slingshot.
        • dclowd99011 day ago
          I mean, why even use an ASCII table at that point? For initial comm you could just do A=0, B=1 etc. for initial comms (until you get to the point you want to reprogram the eeprom) you can have higher bandwidth communication.
          • hoten1 day ago
            If I remember correctly, the book addressed this. 26 division of a circle was too much for reliable determination of which sign the camera was pointing at, so 16 (hex) made the angles more workable.

            If we're talking efficiency, I wonder why he didn't consider Morse code. Well I guess that's easy, even though it's faster it takes a skilled operator to read it in realtime, and he had little time to write any individual bit of information down (cumbersomely writing in sand is slow)

            • Thorrez1 day ago
              You can't represent 26 possibilities with a single hex digit. So it'll require 2 hex digits.

              If you're going to require 2 digits, then that can be done with 2 decimal digits as well. So there's no need for hex, and no need for ascii tables.

              However, if you need more than just the 26 letters, e.g. if you also need numbers and/or punctuation, then ascii might be useful, and hex might be useful to encode ascii into 2 digits.

              • vasco1 day ago
                If I send you this: 48697468657265

                Why do I need to send it to you 2 digits at a time? It's valid hex that converts to ascii, only 1 symbol at a time, which is how he communicated.

                He could've done it with just a card for 0 and another for 1 if he really wanted.

                • Thorrez1 day ago
                  I didn't say it needs to be sent 2 digits at a time.

                  The points of my previous comment:

                  * Ascii is only needed if we need to encode things other than just letters (or if case matters).

                  * Hex is only better than decimal if hex allows the number of digits to be reduced. If we need to only encode 26 elements, then hex doesn't reduce the number of digits compared to decimal, so hex has no advantage over decimal in the 26-element case.

                  Using just 0 or 1 will increase the number of digits needed, so has a clear disadvantage compared to hex or decimal.

                  • vasco1 day ago
                    > Hex is only better than decimal if hex allows the number of digits to be reduced. If we need to only encode 26 elements, then hex doesn't reduce the number of digits compared to decimal, so hex has no advantage over decimal in the 26-element case

                    He had more than 26 things to encode, I believe he started with numbers, letters and a question mark.

                    > Using just 0 or 1 will increase the number of digits needed, so has a clear disadvantage compared to hex or decimal

                    Using 0 or 1 decreases that to only 3 cards (including question mark), and increasing the safety margin to 120° on the setup he had. It'd take longer but be more robust.

                    • Thorrez20 hours ago
                      >He had more than 26 things to encode

                      Ok, then hoten's comment had an error which propagated to my comments:

                      >26 division of a circle was too much for reliable determination of which sign the camera was pointing at

              • He later painstakingly translates machine code transmitted via the camera to the rover which patches the software to allow him to chat via text, so hex came in handy
            • unsupp0rted1 day ago
              Too bad he didn't know Hangul (Korean writing system). He could have managed to communicate well enough with half a dozen chars.
        • artemiszx1 day ago
          I mean they had laptops; just

          for (unsigned char i = 0; i < 127; i++) { printf("%x: %c\n", i, i); }

          • Munksgaard1 day ago
            Or `man ascii`
          • IgorPartola1 day ago
            It’s a book. Explaining a lookup table is way easier for a reader than explaining this code snippet.
        • 1 day ago
          undefined
        • 1 day ago
          undefined
      • ljm22 hours ago
        Communications broke down, but their bladders didn't.

        Danny Boyle - 28 Lightyears Later.

      • voxelghost23 hours ago
        Okay, so it seems ^this is going to be my most upvoted comment on HN, by an order of magnitude. Who would have thunk...
      • semitones1 day ago
        Brilliant!
    • spoonfeeder0062 days ago
      All that data seems would be really helpful to help me do some nasty social engineering with the ISS and crew

      Only thing now is how to haul my ass up there to do that

      • dylan6042 days ago
        > Only thing now is how to haul my ass up there to do that

        If you take a ride on Starliner, you might need to ensure your schedule is extremely flexible

      • "I'm calling about your space station's extended warranty"
    • LeftHandPath21 hours ago
      Dear, this is a dangerous bit of information to discover. Incredibly tempted to spend wayyy too much time making an SVG of the ISS and animating it based on this.
      • pyrolux18 hours ago
        Umm yes yes and if you do that the ISS mimic team would be very interested in seeing it (and more so if it could be integrated into our program :) )
    • yieldcrv1 day ago
      Nice, time for a rebasing token that rebases to the Airlock Pressure value

      scam some boomers with Real World Assets(tm)

  • jaennaet2 days ago
    Heh, I follow a Bluesky bot that posts HN stories that have gone over 50 points and unexpectedly saw a very familiar Github link. I'd made a Show HN story about this ~5 days ago (https://news.ycombinator.com/item?id=42464454) and I was like "huh, how'd that suddenly get more traction" but turns out it wasn't even my post!

    I'm so delighted that this is easily my most popular OSS project over the past 15 or so years (I have my "serious" stuff elsewhere), and I'm not being sarcastic here.

    I'll happily answer any questions folks have (expect some reply lag because holiday season). I figure the most popular question is probably going to be "… but why?" though, and the honest-to-the-gods answer is "because I thought it was funny"; I was trying to come up with a nice and simple 1st project to do with Swift (holy crap that language's concurrency story is confusing), and once I ran into iss-mimic I knew what I had to do.

    • yen2232 days ago
      Are you planning to add AI and monetize this?
      • jaennaet2 days ago
        Absolutely! Realtime data will require a subscription, which will also include an LLM analysis of the past week's data. I think one of the VCs funding my upcoming disruptive space station piss tank telemetry platform requested that.

        I'm pretty sure I can also shove a blockchain in there somewhere too even though they're a bit passé.

        • KaiserPro1 day ago
          Will you release the piss dataset for commercial use?

          or will you consider a piss left license?

        • robertlagrant1 day ago
          Can you elaborate on where quantum computing can fit in? We want this thing future-proofed.
          • jaennaet1 day ago
            pISSStream is already a quantum application as I wrote it while in a box with a poison gas system that can be triggered by the decay of a radionuclide, allowing me to be in a superposition of being alive and dead – technically the app both exists and doesn't exist.

            I'm 100% certain this is how quantum computation works and am available for department chair positions and speaking engagements for conferences.

            • robertlagrant5 hours ago
              That makes sense, but what if your service goes down and we can't get a hold of all the valid data? Before I invest in the $0/year fee, I'd like you to confirm that you're using the Blockchain somehow?
            • slater1 day ago
              Sentient cat programmer: Confirmed.
        • charles_f1 day ago
          Will it be called the piss+ or the piss-pro?
          • throwup2381 day ago
            Piss+ ofcourse. It sets up the zero-G defecation market for the much more profitable piss+poop product.

            But the real money is in piss+poop enterprise which comes with SSO (single shit to orbit).

        • borski1 day ago
          Thank you for this holiday gift of laughter <3
        • kylecazar2 days ago
          More agile
          • mgsouth2 days ago
            You don't really want an agile toilet interface. This is more a waterfall project.
            • readyplayernull2 days ago
              Make sure there's plenty of space to output those logs.
            • NBJack1 day ago
              I regret to inform you that waterfall planning is often considered a fail state in the toilet development world (and a messy one to clean up).

              I can however recommend the Spiral Model [1] as a lesser known Waterfall variation, which carries a heavier focus on risk management. It resembles a conch shell, and may require up to three attempts [2] to get your toilet development process correct.

              [1] https://en.m.wikipedia.org/wiki/Spiral_model

              [2] https://en.m.wikipedia.org/wiki/Demolition_Man_(film)

            • gruturo1 day ago
              Waterfall in a zero-g environment? I don't think so sir, Agile all the way.
              • VTimofeenko1 day ago
                Why not kanban? Stuff floats in the air on its own anyway.
                • juahan1 day ago
                  Finally a real 3D kanban.
            • roland352 days ago
              Boooo :)
        • wayvey2 days ago
          Thank you, this response made my day:)
    • bingo-bongo2 days ago
      Hah! This is great!

      I’ve done something like this, but also used the location of ISS to figure out which country was “getting pissed on the most” by the astronauts.

      I’m fairly sure I got a working script somewhere for the data, but unfortunately never got around to create a leaderboard website for it :/

      • jaennaet1 day ago
        I would like to remind everyone that the "New pull request" button is like right there on https://github.com/jaennaet/piSSStream/pulls

        It'd be fantastic to have the flag of the country last pissed on in the menu bar item.

        Ie. when the tank level increased last I guess? The value doesn't always seem to just monotonically increase though, but I could be wrong – frankly I haven't paid that close attention to the value. Could also be something like microgravity causing a bit of… uh… slosh making the sensor reading slightly inaccurate, or something along those lines?

        • shever7316 hours ago
          This has nerd-sniped me waaaay too much. Now I need to know the capacity of the ISS urine tank since an average adult urination is between 200 and 350ml.
      • llm_trw1 day ago
        Now I'm thinking doing it for constellations, which zodiac is the most celestially pissy.
        • Dilettante_1 day ago
          Knowing which star sign 'causes' people to pee would be invaluable information to astrologists!
        • bingo-bongo1 day ago
          The sky’s the limi.. no wait :D
      • grahamj10 hours ago
        For some reason I assumed they ejected the piss out into space so I was imagining using pee volume drop plus station location to determine trajectory of the pee and effectively track each load as it ventures out into space.

        Oh well

    • keyle2 days ago
      Have you considered making this a library? I think every Swift application needs this important metric on the about panel.
      • jaennaet1 day ago
        It actually started life as a Swift library package + cli tool without any sort of Xcode project, but somehow when I tried to add it to an Xcode GUI project I just kept getting weird-ass linker errors and gave up after a while (nobody ask what those errors were, it's been a week and I can barely remember what happened yesterday)
    • KaiserPro1 day ago
      I suspect I need to combine that datasource with this indicator that I made: https://www.secretbatcave.co.uk/electronics/shart-o-meter/
    • shepardrtc1 day ago
      I know they're working on ways to recycle the urine into water. Can you add a display of water levels and somehow show when it transfers between the two?
      • bingo-bongo1 day ago
        There is a metric or code already that shows when the recycling happens - if I recall correctly it’s at least a couple of times per day, but I’ll check my notes tomorrow…
    • 10 hours ago
      undefined
    • N3cr0ph4g1st1 day ago
      link the bluesky bot?
  • AIorNot2 days ago
    Ok I was the the tech lead and a flight controller at NASA with the team that released this telemetry as part of Isslive which this api (used by ISS mimic) used - we spent a number of years educating the public about the space station program

    https://youtu.be/xAhw_8B25N0?si=OZXH9sZ0bY_iX40V

    And now 12 years later we have PissStream.. haha

    lol that is a bit funny.. good to see our livestream server is being put to good use - lots of other good telemetry though :)

    I love ISSMimic

    • jaennaet1 day ago
      I am not sorry and I will do it again.

      But on a more serious note, while my use of live ISS telemetry is probably about as maximally frivolous as can get, it's nothing short of amazing that this sort of abject silliness is not only possible but actually trivial to pull off. So hats off to you and the rest of the hard-working folks at NASA (et al) who made it possible in the first place.

      And yes there's definitely all kinds of interesting telemetry available from the ISS. Seeing the dashboard that the ISS mimic project has was quite an eye-opener

      • mhh__6 hours ago
        In jest but this is a good example of how spending a bit of time on APIs and metrics and so on is buying an option on creativity in the future
      • matsemann1 day ago
        Thousands of people are today learning about these metrics thanks to your funny project. And from that, someone else will also make something cool and useful.
        • jaennaet1 day ago
          I'm going to add "science communicator" to my résumé.

          But yes, the app may be a joke but at least there's something there beneath the joke.

    • 9dev1 day ago
      I was wondering, when the ISS will finally be shut down and destroyed, will the telemetry stream run until the very end? In that case, I’m going to wait in front of the terminal for that last farewell of the station when the time comes…
    • arendtio18 hours ago
      It's funny how the music reminds me of the Star Trek Voyager Theme, and yet it is not the same music :D
  • simonw2 days ago
    Here's a web port of this: https://gistpreview.github.io/?76f03f49be58344bfa64c9d5d9f0e... (source code here: https://gist.github.com/simonw/76f03f49be58344bfa64c9d5d9f0e... )

    Created by pasting the entire Swift GitHub repo into Gemini 2.0 and asking it to port it to a web page: https://gist.github.com/simonw/b4aec4e879e50ac74f6f9cc6e1cdc...

    • jaennaet2 days ago
      The bastard even added rudimentary error handling
    • gloflo1 day ago
      Ethical usage would include thankful attribution.
      • simonw1 day ago
        Yeah, that's fair - added "Adapted from pISSStream by Jännät" just now.
    • varenc23 hours ago
      I’m going to cite this web port whenever someone claims LLMs are no better than stackoverflow copy pasta.
    • fragmede1 day ago
      Interesting. I asked Claude and ChatGPT-4o similar things and got quite a bit of variance. Using Aider and giving it your prompt, "Output a single HTML page with included JavaScript and CSS that fetches the latest levels of the urine tank on the ISS and displays it appropriately - it should be mobile friendly" and adding "use the same api as the swift code" worked in one shot. However, Claude could not one-shot it If I just asked for a "web page", and it took a couple more prompts to get it working. ChatGPT-4o kinda failed at the task. It hallucinated a URL to load lightstream.js from, but didn't realize that and I had to gasp debug the problem myself. I also tried with Copilot in VSCode since that's now free and got similar results.

      With such variance though, it now becomes much easier for me to see why the question of if LLMs are any good at coding is so contentious every time it comes up on HN. If, even for such a small, well defined task, there's such variance in behavior from seemingly small prompt changes, it's now easier for me to see why some people see it as the second coming and others think LLM-assisted program is all hot air.

      • sumedh16 hours ago
        > With such variance though

        I agree, I have noticed some prompts which work perfectly fine on Claude when used in WindSurf IDE which uses Claude the same prompt did not work.

        LLM models work fine for small scripts but when it comes to large Codebase I just cannot trust them.

  • kirubakaran2 days ago
    Good example of stream processing
  • pyrolux2 days ago
    ISS Mimic team member here - I love it. Great work!

    And for anyone worried about astronaut privacy, the urine tank quantity does not reflect ... direct addition of urine from a crew member ;)

    • jaennaet1 day ago
      "Great" may be overstating things just a tiny bit especially in comparison to ISS Mimic but I'll absolutely take the compliment, thank you.

      I'm also curious as to what the quantity actually does reflect – I clearly haven't peered deep enough into the soul of the UWMS.

      • pyrolux1 day ago
        Oh it definitely does reflect how much astronaut urine is in the tank, but the value changes (sadly?) don't indicate direct use of the toilet due to how the system is configured.
        • futhey1 day ago
          Well where exactly are my tax dollars going then? /s
    • klausa1 day ago
      Now I'm genuinely curious — what _does_ it reflect then?
      • zaik1 day ago
        Aliens using the ISS toilet confirmed.
      • matsemann1 day ago
        It might include additional liquid for flushing/cleaning etc?

        What I'm curious about is when the levels go down. Does that mean it's emptied over some country?

        • stragies1 day ago
          I thought, that most/all water is recycled into the drinking water tank after some processing.
    • 2 days ago
      undefined
  • JodieBenitez2 days ago
    Spot on variable names.

         static let pissYellowLight = Color(red: 0.95, green: 0.85, blue: 0.2)
         static let pissYellowDark = Color(red: 0.7, green: 0.6, blue: 0.1)
    • jaennaet2 days ago
      Heh yeah I was meaning to change background & foreground colours on the menu bar item, but apparently SwiftUI's MenuBarExtra labels don't actually support changing the colors – at least not in any way that I found immediately obvious. I naturally forgot to remove the unused enum after I gave up trying to customise the label.
  • bfeist1 day ago
    Creator of apolloinrealtime.org here. I work on the ISS program now. Hat’s off, sir.
    • Apollo in Real Time is an overwhelmingly awesome resource. Thank you.
  • durul10 hours ago
    Hi Guys,

    I added Immersive Experience with 3D for Vision Pro. If you want to see a urine tank with a fullness rate with 3D. Please check this Pr. https://github.com/Jaennaet/pISSStream/pull/7

    #visionpro

  • yjftsjthsd-h2 days ago
    I... Did not know that was public information.
    • Oarch2 days ago
      It's publicly funded!
      • pooper2 days ago
        I didn't know that working for a state-funded college meant my pay information would be public information until one day someone told me they googled me and found how little I was making...
      • bowsamic1 day ago
        I was a LIGO member, which is publicly funded, and our live data stream was extremely secret, and in fact when you publish a paper you have to go through an internal review process called P&P that checks if you're using any secret data without permission
    • lostlogin1 day ago
      An API may have saved a Freedom Of Information Act request.
  • yen2232 days ago
    You could potentially send a notification every time a crew member takes a whizz
    • dylan6042 days ago
      Could you then start to identify which astronaut by the amount? I didn't follow the link to see what other data that is not being used contains, but if there's any other chemical analysis data it could be done. NASA could then solve their funding issues by selling all of that analytics to data hoarders and start showing ads on all of the screens on the ISS. Hell, I'm now surprised that some YC startup hasn't released a Smart Toilet that does this.
      • Waterluvian2 days ago
        > Hell, I'm now surprised that some YC startup hasn't released a Smart Toilet that does this.

        Thanks, Smart Pipe!

        https://youtu.be/DJklHwoYgBQ?si=xfgjgOVc_P4-k44C

        • dylan6042 days ago
          well, rule 42 of the internet: if you can think it, it exists on the internet
          • Y_Y2 days ago
            I'm more concerned about the unthinkable things.
            • notpushkin1 day ago
              Don't think too hard about it.

              And probably let's not apply rule 34 here, either.

      • Depending on the frequency of data updates, rate-of-change and rate-of-rate-of-change could be calculated and possibly correlated with specific user(s).
  • bayindirh1 day ago
    It's interesting that the Russian version of the page uses the same blue color scheme Russians like to use for their consoles and equipment.

    It's a neat and considerate detail if you ask me.

  • jaennaet1 day ago
    Somewhat incredibly, v0.2 is out thanks to a contributor! Adds signal loss handling, so now you can see at a glance if ISS telemetry is actually even being received by the ground station.

    Direct download link: https://github.com/Jaennaet/pISSStream/releases/download/v0....

    • porkphish11 hours ago
      Next version could take the streamed data and convert it into tones. Listen to the stream. :)
    • slater1 day ago
      Running this app, it's downloading about 1kb/s from push.lightstreamer.com, is that expected behaviour...?
      • jaennaet22 hours ago
        Yeah that'd be the telemetry stream, probably specifically the new telemetry status & timestamp subscription that got added in 0.2, it gets updated maaaaaany times per second. Unfortunately it's a push and not a pull model stream so I'm not quite sure if there's any "clean" way for the app to throttle the incoming data except eg. periodically just unsubscribe from the very chatty status subscription.
        • slater7 hours ago
          Just to be sure, you mean telemetry in the sense of "retrieve latest ISS " telemetry, or "evil marketing 101 phone-home" telemetry...?
          • varenc2 hours ago
            yes of course. If you go to https://iss-mimic.github.io/Mimic/ you can see the websocket to `wss://push.lightstreamer.com/lightstreamer` being opened and the stream of events. That provides a stream of ALL ISS telemetry data and this app is only making use of the urine tank data.
  • mofunnyman2 days ago
    Privacy is not a concern in space I guess. Absolutely horrific, I love it.
    • daft_pink2 days ago
      I’m just waiting for Apple to invent the iSpace Station, where privacy is taken seriously and Google writes them a trillion dollar check to be the default service provider.
    • jaennaet2 days ago
      Hmm. Maybe the next version should use AI to deduce the path the whizzing crew member took, by combining the tank fill status with other telemetry data like station orientation, vibration in different components etc.
  • grantsh1 day ago
    I thought this was really cool so I decided to write a windows version :)

    https://github.com/grantshandy/WinpISSStream

  • onionisafruit2 days ago
    Just in time for “Merry Christmas, shitter’s full”
  • EvgeniiAl1 day ago
    Let's do it in the cloud-native way. Here is prometheus exporter https://github.com/EvgeniiAl/piss-exporter/
  • pmarreck14 hours ago
    The real story here is that a man with no Swift experience but who had a funny idea banged out a Mac app in a spare afternoon, probably with LLM assistance
  • 2 days ago
    undefined
  • danbr1 day ago
    Found this X account which posts in real-time some of the same info, hahaha: https://x.com/isstoiletelem
  • beaugunderson1 day ago
    wanted this but didn't want to run another app when I'm already running SwiftBar--here is a version suitable for use with SwiftBar/xbar/etc. (error handling left as an exercise for the reader):

        #!/usr/bin/env node
    
        var Ls = require('lightstreamer-client-node');
    
        var sub1 = new Ls.Subscription("MERGE",["NODE3000005"],["Value", "Status", "TimeStamp"]);
    
        sub1.addListener({
            onItemUpdate: function(obj) {
              const percentage = obj.getValue('Value') + '%';
              console.log(`${percentage} `);
              process.exit(0);
            }
        });
    
        var client = new Ls.LightstreamerClient("http://push.lightstreamer.com","ISSLIVE");
    
        client.connect();
        client.subscribe(sub1);
  • charles_f1 day ago
    I love that the project embraces piss as its central theme, the name itself, all variables such as "pissAmount"... But then the project description modestly calls it "urine".

    That's my favorite project of 2024 so far!

  • hyhconito2 days ago
    That is absolutely hilarious and amazing. I love the effort people put into things like this.
    • jaennaet2 days ago
      This is exactly the sort of reaction I was hoping to inspire.

      Like I said in my Show HN story, this is clearly a ridiculous and more or less completely useless application (probably even if you work for ISS Environmental Control and Life Support System), but it really is kind of amazing that this is possible in the first place, and didn't even involve all that much effort apart from the obvious newbie hurdles like "how in the hell am I supposed to do XYZ in Xcode?"

  • bagels2 days ago
    I wish there was more written in the readme about the motivation for this project.
    • jaennaet2 days ago
      Good point! I'll have to add that in at some point after the holidays.

      My motivation was entirely that I thought this was both a hilariously stupid use of a space station's telemetry stream, but also kind of amazing at the same time. Also a great excuse to learn Swift, but the sheer ridiculousness was what drove me.

      Like I said in my earlier Show HN post on this (I think? Or maybe on Bluesky), it's remarkable that we live in a world where it takes an afternoon to bang out a joke application that reads actual realtime telemetry data from a space station's toilets.

      • zanderwohl2 days ago
        I enjoy that you learned how to use Swift in some new ways, including the MacOS menu bar. This is a perfect practice project, it seems.
    • jsheard2 days ago
      Knowing the status of the ISS piss tank is its own reward.
    • beAbU2 days ago
      I wonder how many amazing things put there died a crib death because the creator struggled to find a "real" motivation for it's existence.

      I reckon more often than not "because I wanted to" is more than enough for many things.

    • dialup_sounds2 days ago
      I expected to see a CoC in the repo.
    • yjftsjthsd-h2 days ago
      I mean,

      > Not the epitome of good coding practices since this was my first Swift & macOS app ever, may break in exciting ways at the slightest excuse.

      sounds like it's a learning exercise. One of my first interesting programs was a weather app; this is just a weirder version of that.

  • riiii1 day ago
    Is there a separate tank for solid excrement? Are we missing an opportunity for a shit stream?

    How is that even released from ISS?

    • shever7316 hours ago
      Yes, the solid matter goes into waste containers that are burned up on re-entry of the supply craft. Unfortunately there doesn’t seem to be a reading for the solid waste containers.

      It makes wishing on a falling star less romantic, though, when you realise you could be wishing on flaming astronaut poop.

  • thomasjudge2 days ago
    Merry Christmas to you too
  • khaledh2 days ago
    I don't see a "urine test" in the test suite.
    • jaennaet1 day ago
      100% probability that there will be a test with a name along those lines if I ever do end up actually writing tests
  • orf1 day ago
    In space, nobody can hear you piss.

    And they don’t need to, because they get a notification on their desktop when you do.

    Add space piss notifications.

  • _-_-__-_-_-2 days ago
    I do hope someone can port this to gnome extensions.
    • freedomben1 day ago
      My thoughts exactly. Surely somebody will take on this important work
  • toben881 day ago
    Forked the code and built a windows .net version. I got it to bring in telemetry data but failed to get the Urine Tank [%]
  • raminf1 day ago
    On semi-related news...

    Santa Cruz Wharf’s fallen restroom becomes an unlikely tourist attraction: https://archive.ph/k1lwt

  • highwaylights2 days ago
    If you’re looking at this post and thinking to yourself “but.. why?” that means it’s currently functioning correctly.
  • sugabush2 days ago
    Urine trouble if I see this on your screen
  • heyarviind21 day ago
    This is cool, when I clicked on the link https://iss-mimic.github.io/Mimic/ I was amazed to see a lot more data in the public domain.
  • MarcelOlsz2 days ago
    This is the first and only macOS menu bar app I've ever used and I couldn't be happier.
  • i_love_retros12 hours ago
    > It's remarkable that we live in a world where it takes an afternoon to bang out a joke application that reads actual realtime telemetry data from a space station's toilets.

    An afternoon? Yeah, right.

  • Thorrez1 day ago
    I don't think that page is using the word "errata" correctly. I think it's supposed to be a list of errors, but it doesn't seem to list any errors.
  • noufalibrahim1 day ago
    A bit of a drip if you ask me. The whole thing reeks of stale body fluids. Why don't you piss off and make something useful?

    Seriously though, this is a hits the sweet spot of being useless and funny perfectly.

    • jaennaet1 day ago
      Exactly what I was going for.

      I'd rather make something funny (but also kind of interesting) than useful any day.

      • noufalibrahim1 day ago
        I remember David Beazley of SWIG fame saying that he uses this as a metric. Include stuff in the course that makes people say... " I don't know how that's useful but damn that is cool".
  • layer82 days ago
    Maybe one of the crew members will start to urinate in Morse code.
    • laxd2 days ago
      It's too hard to pull of. We need an RFC for a Urination Communication Protocol.
      • hex32 days ago
        [dead]
  • Are there any video games that include the ISS? It would be a cool add-on, having live telemetry added to the in-game version.
  • nom2 days ago
    Awesome, was just looking for sth like this, perfect timing
  • KaiserPro1 day ago
    When you make a newsletter (so hot right now) can you call it "Piss Fax"?
  • thr0waway0011 day ago
    What do they do with the urine when the tank is full?
    • wkat42427 minutes ago
      Reprocess it to drinking water
  • esprehn2 days ago
    Relevant pop-culture:

    https://bigbangtheory.fandom.com/wiki/Wolowitz_Zero-Gravity_...

    Space toilets are one of those things that are both critical and ignored in most depictions of space. Even in all the years of Star Trek they have "sonic showers" , but never depict a toilet.

    It's amazing that NASA publishes this data in real time.

    • throwup2382 days ago
      > Space toilets are one of those things that are both critical and ignored in most depictions of space. Even in all the years of Star Trek they have "sonic showers" , but never depict a toilet

      Why would they? They have artificial gravity everywhere and iirc it’s never failed like every other piece of technology when the plot demands it. The toilets wouldn’t look any different, except maybe the ones to accommodate non-human species (THAT would be interesting). Star Trek elides a lot of things that would otherwise be boring because “post-nuclear war Utopia solved it.”

      Evacuation is only interesting in zero-G. Although to be fair I don’t remember the expanse or most other hard scifi touching on the topic.

      • 0_____02 days ago
        The novel versions of the Expanse do touch on human excreta at points. There's a mention of a urine collection device in a space suit at some point.
        • duskwuff2 days ago
          The TV series does too, indirectly. Look up the etymology of the expletive "felota".
      • crazygringo2 days ago
        I suddenly realize, though, that I can't ever remember seeing a bathroom door anywhere on any USS Enterprise or similar.

        Like, wouldn't there be one tucked away in a back corner of the bridge, or a corner of a room or passage adjoining the bridge? Shouldn't we see a bathroom door, or at least the open entrance to a "bathroom corridor", as the characters do a walk-and-talk down the hallways?

        And then... regular TV shows show women putting on or taking off their makeup in the bathroom mirror, people having a conversation through the shower door, someone in a stall overhearing a conversation by the sink... has Star Trek ever shown that?

        What the heck does a bathroom look like on Star Trek? And the bathroom signage?

    • wishfish2 days ago
      I remember one Star Trek writer theorizing that the Klingons were so cranky because they never put toilets in their ships.

      I loved Babylon 5. One minor reason was because a scene was filmed in a restroom. With ultraviolet lights used in place of water for the handwashing. A sign that the characters are living in The Future. Showrunner J Michael Straczynski did this specifically as a small dig against Star Trek.

    • unsnap_biceps2 days ago
      My pet theory is that Star Trek just beams the waste out of folks automatically.
      • hk13372 days ago
        My understanding is the waste gets resequenced and used to create other items.

        * Enterprise - S1E8 Breaking the Ice

        > Tucker: The first thing you've got to understand is we recycle pretty much everything on a starship. That includes waste, and the first thing that happens to the waste is it gets processed through a machine called a bio-matter resequencer. Then it gets broken down into.

        > So the waste is broken down into little molecules and then they get transformed into any number of things we can use on the ship. Cargo containers, insulation, boots, you name it.

        * Discovery - S3E12 There is a tide...

        > Admiral Charles Vance: It's made of our shit, you know.

        > That's the base material that we use in our replicators. We deconstruct it to the atomic level and then reform the atoms.

      • jsheard2 days ago
        Hopefully no beta testers had their guts beamed into space by accident when they were dialing it in. What a way to go.
        • ceejayoz2 days ago
          The frequency with which the supposedly mature tech glitches out would have me very leery of using it for mundane purposes daily.
      • hyhconito2 days ago
        Having spent an uncomfortable and expensive night in a foreign hospital after creating my own personal fatberg, this sounds like a technological innovation that would bring tears of joy rather than stress to my eyes.
        • dylan6042 days ago
          anyone with kidney stones would be interested as well
          • smitelli2 days ago
            Maybe give my arteries a quick scrape while you’re in there.
          • hyhconito2 days ago
            Oh yeah been there too. Imagine the day you could beam them out!
    • egypturnash2 days ago
      It is a little known fact that everyone in Trek pees and poos in the sonic shower.
    • dylan6042 days ago
      I like the story arc in Avenue 5 about dealing with waste in space. They went in a slightly different direction though
    • semi-extrinsic2 days ago
      Isn't it a joke in Space Cowboys, where Tommy Lee Jones inspects a gadget and one of the young astronauts tell him it's the "ACM - Asshole Centering Monitor"
      • dylan6041 day ago
        Centering Module

        Of course there was the scene in Apollo 13 about catching the clap from sharing relief tubes that puts things in perspective

  • mrcwinn2 days ago
    Thank you. Humanity's not done yet!
  • sys_647381 day ago
    What type of MCU sensor is on the pee bucket? How would one communicate with it?
  • wasabinator2 days ago
    The perfect DevOops tool
  • perching_aix2 days ago
    Great for competitions.
    • jaennaet1 day ago
      What… uh, what sort of competitions are we talking about here, exactly?
  • e-clinton1 day ago
    Nothing against the project itself but I gotta say, the amount of votes this post has gathered makes me lose faith in HN.
  • What an incredibly specific application!
  • ngcc_hk17 hours ago
    Is there other modern interested telemetry we can do?

    Btw is in big bang theory …

  • 2 days ago
    undefined
  • g3ol4d01 day ago
    The internet is amazing
  • lanewinfield2 days ago
    so this means if the % is actively increasing, we could also have a isSomeoneCurrentlyPISSSing boolean
    • lostlogin2 days ago
      A live stream stream!
    • amelius2 days ago
      If the % increases in small steps, then the hasProblemsVoiding boolean is set.
  • CodeWriter232 days ago
    This is weird.
    • jaennaet1 day ago
      I wholeheartedly agree
    • 2 days ago
      undefined
  • sam0x176 hours ago
    and yet I still can't get a working CPU temp monitor in KDE taskbar in 2024 :(
  • 1 day ago
    undefined
  • neycoda23 hours ago
    How do they know it's urine in the tank?
  • This readme is hilarious
  • amanda992 days ago
    The finns strike again.
  • AzzyHN1 day ago
    Finally
  • dbacar1 day ago
    pISSStreamUITests -> pISSStreamUrineTests
  • caseyohara2 days ago
    Now I’m curious when and how the tank is emptied. Is the waste periodically picked up and brought back to Earth? Is it flushed directly into space? If not, is it because there is a risk of septic satellites, so to speak, stuck in orbit for other satellites to collide with? Moreover, what happens if the tank reaches capacity?
    • kevin_thibedeau2 days ago
      It's recycled as drinking water on ISS. For the shuttle, it was dumped creating an ice cloud that was visible from the ground with the sun in the right position.

      https://www.space.com/7274-mystery-explained-glow-night-sky-...

    • dylan6042 days ago
      It is filtered and reused as drinking water.
    • lostlogin2 days ago
      Shipping water is not ideal, I’m all for filtration and reuse. As a true NIMBY, I’ll stick with fresh water for myself.
      • ThinkBeat2 days ago
        The water you can find to drink on earth has most likely been recycled through men and beasts countless times over millions of years. Though the precise permutation atoms could be new.
        • lostlogin1 day ago
          Of for sure. It’s just that it’s a bit too close to home when you know who’s piss it is you’re drinking. I’m more ok with diplodocus piss.
          • gruturo1 day ago
            The Expanse (book series) has a nice quote about water that "had been piss and tears and sweat and blood. The circle of life on Ceres was so small you could see the curve."

            (Can't remember if these 2 are actually back-to-back, or even from the same book, but I think they were. Been a few years).

            • gosub1001 day ago
              I can't remember the original source but I recall a pseudo inspirational quote that X atoms in your body were once part of Michaelengelo (or some other famous person). Seems plausible, yet another mind bender attributable to quantum physics.
  • cute_boi1 day ago
    Just checked github and the folder/file names are totally unreadable. Even rust project has better folder name like src/ test/ instead of these pISSStream.xcodeproj pISSStream etc...

    Apple please do better.

    Thanks.

  • DonHopkins1 day ago
    Finally the perfect use for the accursed touch bar!
  • m3kw92 days ago
    Why not the poop tank, dueces per hour. Not too hard to do engineering wise
    • jaennaet1 day ago
      Oh believe me I would have used that metric if there was one, but apparently there is no fecal storage tank as such; your poop is collected in a bag by the Universal Waste Management System or UWMS (which is what you call a space toilet when you're NASA and don't want to say "space toilet"), and those bags are stashed in a "removable fecal storage canister". Some of those canisters are returned to Earth "for evaluation" ("yup, it's poop"), but most are loaded onto a cargo ship that is then burned up on re-entry. Couldn't see any obvious telemetry for the UWMS' urine / feces separatator fan system kajigger either (the "Dual Fan Separator" + sort of gearbox, because apparently a space toilet needs a gearbox.)

      This is not knowledge I ever expected to have.

      https://www.nasa.gov/humans-in-space/boldly-go-nasas-new-spa...

      • Dilettante_1 day ago
        >because apparently a space toilet needs a gearbox

        For when you need to shi(f)t into maximum overdrive?

      • m3kw91 day ago
        Yeah it makes more sense to not have feces plumbing on the ship.
  • egypturnash2 days ago
    Now this. This is the kind of quality hacking I come to this site for.
  • hooverd1 day ago
    The piss meter IS real. I love this.
  • davidblue1 day ago
    Thank you.
  • khobragade1 day ago
    "but most of all, jaennaet is my hero"
  • drooby2 days ago
    That's great thank you. Can we please get this as an on the iOS Lock Screen app. Thanks.
    • jaennaet1 day ago
      Leave a feature request issue! I might actually get around to it one beautiful day, and if we're very lucky that might even happen before the heat death of the universe.
  • yosito2 days ago
    Great! Now I just need a way to see the menu bar items that get pushed behind the notch.
  • userbinator2 days ago
    ...and it's almost 6MB. For a little widget that just reads some data from the network and displays it. That's what really takes the piss.

    Relevant quote: "We flew to the moon on 4KB of RAM."

  • 94b45eb42 days ago
    At least it’s got tests … oh, wait …
  • ok6543211 day ago
    Spending effort on such, uuhhh.... 'marvels'? really brings peo'le's daily life forward. Congrats on well-spent time!

    /s

  • [flagged]
    • post-it23 hours ago
      Hey man, it sounds like you had a shitty experience on some payment platform, so you made this account to complain and rile people up?

      Sucks that you had a bad experience, it may be worthwhile posting a more direct tale of it - people here love commiserating about things and may even be able to help out.

      Not sure what's up with your other racist comments though, that's pretty weird my dude.

  • fghorow2 days ago
    For all the potential US Vice presidents in here[1] this NEEDS to have a temperature reading too! Not to mention volume conversions to buckets.

    [1] Hey, it _could_ happen. Look at Elon!