I don’t want to hear about your Plex, your NPM, your notes application or science forbid, your budgeting application. I want to hear the most exotic thing you setup to selfhost, that probably only you and a hand full of people around the world actually use or even need. A problem that you solved in a way, that makes people go WTF. Go!

I’ll start: I live in the mountains, and there is snow, lots of snow. I often tell people “We had 3m of snow last year”, but is that really true? So, I thought to myself: Can you measure snowfall? It seems you can, so I setup a USH-9 ultra sound measuring device, connected it via IC2 to my Home Assistant and now I can tell people with confidence, that we had a total of 3.45m of snowfall last season, with max snow height of 60cm on January 5th.

Future project: I have chickens. They lay eggs. I have cameras. I want to know which hen lays how many eggs. Solution? AI image recognition of the hens (who is who) and if they have laid an egg. Any inputs welcome.

  • Void_0000@alien.topB
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    11 months ago

    I self hosted searxng, but the problem is after I was done I realised that defeats most of the privacy benefits of searxng: If I’m the only one using it, then I might as well just be using the search engines themselves directly.

    So now I also have firefox running in a docker container, searching random junk on searxng every couple of minutes.

  • GibbsBrutus@alien.topB
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    11 months ago

    Our car has wifi so you can connect to it and start the heat/ac. It doesn’t have 5g/4g just no data wifi so you have to be within ~20 feet to warm it up. The app sucks also, along with connecting to its wifi.

    Alexa “Warm Up The Car” -> Home Assistant -> trigger an android phone to run a touch script on the phone to run the stupid app and warm up the car -> then report back it did it correctly.

    It still fucking works after 5 years and I refuse to even touch the damn thing, as it’s way way too handy when it’s cold out.

  • evansharp@alien.topB
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    11 months ago

    When I lived off grid, I wrote an energy production measurement application. With both hydroelectric and solar going through a 1990s inverter, it was something. Nowadays these are off the shelf for suburban yuppies, but for my DYI-everything homestead, only DIY would do. Measurement was via shunts. I put it online over satellite internet and could watch my production and static consumption from work.

      • kekonn@alien.topB
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        11 months ago

        From what I’ve gathered from youtube you’ll usually need to create a height difference of some sort by damning up a bit of a stream, then have the overflow go through a pipe that’s a sheer drop down onto an impeller attached to an electric motor (bonus points if it’s recycled from something like a washing machine).

        Then from that motor it’s on to battery chargers etc…

  • terAREya@alien.topB
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    11 months ago

    The industry I work in has many many companies. For whatever reason they all seem to use a very similar website template. Job openings are almost always listed on their webpage. Almost always its a plugin from workday or whatever their HR software is. Years ago I noticed that job listings were almost always published to their websites before they appeared on major job sites like linkedin.

    I used a business to business website that lists every single company in this industry by location and has a link for each to generate a list of companys and URLS. I monitor this for changes with changedetection.io

    Then changedetection.io + company list and their job posting URLS that look like this company.com/careers/join-us/?_sft_job_posting_category=technical

    So I now have about 800 companies that I am able to monitor for job leads and get notified via NTFY with company, job title and job description.

    Its turned off currently cause I am actively employed, but when I was looking about a year ago I had it running hourly and if I look again I will indeed use it

  • SocialSlacker@alien.topB
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    11 months ago

    I too have a chicken cam, but no image recognition at this point. However, I have used it to discover that an opossum was breaking in and eating the eggs.

    Other than that, the most unique things I have cobbled together are probably these:
    - I work from home, so I created an automation using Home Assistant to tie into the Webex API to determine if I’m on a call or busy and, if so, turn on my Do Not Disturb light so that people don’t just barge into my office.
    - A script my son can run from my OliveTin dashboard to update our Minecraft server (docker container).
    - Another script I can run from my OliveTin dashboard to log into my firewall and disable/enable my son’s internet.
    -- Both of these scripts notify me when they’ve been run via ntfy.

    • HeliumIsotope@alien.topB
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      11 months ago

      I’m new to hosting my own stuff and automation. Olive tin sounds incredibly useful. I will definitely be looking into that, thank you for that.

      • ElevenNotes@alien.topOPB
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        11 months ago

        That’s what we are all here for: The fun stuff, the unusual stuff, not the 100st post about “how to run Jellyfin”.

    • ElevenNotes@alien.topOPB
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      11 months ago

      I love custom HA work flows that are specific to ones needs. Great job! Show’s the beauty of HA that most people miss when all they do is the standard stuff, but you can basically do anything you can imagine. I have door sensors and instead of only relying on a baby monitor, when my toddlers open their door after 2200, the lights turn on in the hallways (so they see something) and a light in our bedroom turns on as well as a notification on the phone. Because sometimes toddlers are sneaky and you hear nothing on the baby monitor. Set this up after I heard one of them cry two floors down (he went through the entire dark house alone down two flights of stairs).

    • sofixa11@alien.topB
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      11 months ago

      I also used a cheap wifi motion sensor to tie into Home Assistant which triggers another automation for a smart bulb in my office to let me know when the dog wants in from the garage.

      A former colleague of mine had an even more advanced version of this. Since his dog is chipped, and the chip is RFID, he hooked up an RFID reader to an Arduino, and built a dog door with a motor that automatically opens when his, and only his, dog is there, and sends him a notification.

  • pzl@alien.topB
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    11 months ago

    I have two! The first is exotic purpose, the second is just tightly integrated so much that it might be only useful to me.

    Smashcam

    I live on a busy corner, in an otherwise slow and sleepy town right outside the city line. I live between a lot of town services on one side (fire house, library, athletic fields, town hall) and the elementary school on the other side. Pedestrian traffic is very high, the amount of children crossing is very high, bicycles abounds, and the cross street between them is decently high traffic.

    So I see a decent amount of car accidents on my corner. 30mph limits on both streets so usually not catastrophic, you might be driving away instead of towed. But the repairs will be substantial on most of these. To provide an objective reality-as-a-service, I set up a camera high up in the eaves of my roof pointed right at the intersection. I’ve sent the police enough clips that they know where to archive my emails for evidence by routine. I’ve started training a model to detect car crash noises (and honks) to cut and save the clips automatically. It’s not reliable enough yet, but this could become a reasonable pipeline:

    Car crash audio detected ->
    Notification "Possible crash, do you want to review the footage and send to the po-po?" ->
    manual human review to make sure we're not sending false positives ->
    hit send ->
    email with clip constructed and sent
    

    Photos

    This is not exotic in terms of its purpose. Lots or people have self-hosted photo sites (heres a whole chart of them all!)

    But none of them integrated with my foss RAW editor darktable.

    So I built my own photo site alternative that parses the darktable edit files and DB.

    So now on the web, I can see the ☆ ratings I gave the photos in my editor. The tags and labels, etc. I parse the RAW files to show the focus boxes that the cameras write in the metadata when they took the picture, the facial recognition bounding boxes, etc.

    And it shows the edit history stack and all the edits from my RAW editor. And of course, it has the left-right swiper to show before/after the photo edits. I can export any size, and it calls out to darktable with command-line control to export with the given edit stack to make the JPG of whatever size I’m requesting.

    So yes, alternatives exist. Mine is simply very specialized to a particular editor program. I don’t believe I made the repo public, so as far as I know, I (and my family) are the only ones using it. It’s probably more featureful than things I have released.

  • leafynospleens@alien.topB
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    11 months ago

    I have kubernetes cluster running a vanilla warcraft server full of computer controlled bots that play in the world while I’m offline, just chuggs away all day then sometimes I log in and see how the bots are doing and play a little.

      • leafynospleens@alien.topB
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        11 months ago

        No there is a popular extension to one of the open source cores that operates bots for you, it’s not ai it just has access to gm commands internally so it can scan the game word for interact able objects and then follow set behaviour scripts based on what it sees

  • OutsidePerception911@alien.topB
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    11 months ago

    I’m up for the chicken challenge, dad wants to have chickens, we live too far apart. It’s reusable, plus now you can know which chickens will go to nuggets and which give you omelette

    • ElevenNotes@alien.topOPB
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      11 months ago

      Problem is training the model which hen is which from different angels. I would need to provide a lot of video material for every single chicken and then apply ML to get a match. With 40 birds, that’s a lot of prime video footage per hen. Maybe I’m missing a better solution?

  • jakoberpf@alien.topB
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    11 months ago

    Love the stuff from the comments here.

    For me, not so WTF but still a little overkill. My Parents have a sauna in the Garden which we occasionally use. But in the winter it’s cold and you don’t want to check outside for the temperature of the sauna until you go in. So my cousin and be build a little WebUI and Python script which allows us to monitor the temperature and control the state of the sauna remotely. 10m from living room garden sauna saved 😅

  • justinrlloyd@alien.topB
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    11 months ago

    Just about all my projects are (or rather were) on github. The hidden ones are due to redditors trolling or being outright shitheads, so I had to hide some projects temporarily.

    Timezone aware clocks

    I have a wall of eight timezone aware clocks, with the arms controlled via stepper motors to a single raspberry pi. The Raspberry Pi also controls eight separate OLED displays that are made to emulate VFDs. And then I set each clock to the timezone it corresponds to, pull the weather and temps from the internet and send them to each display, and also show some headlines for the region. When you need to talk to a client, you know what time it is there, what the weather is like, and recent news headlines.

    Chore list

    I have a chore list that displays on 12"x4" touch screen, with physical electromechanical toggle switches that are controlled by a raspberry pi. This chore list reminds me to clean the litter box, water the plants, pay the car insurance, etc. When I complete a chore, I flip the physical toggle switch and the chore gets marked as done until the next time. After a while, the chore disappears from the display, and the raspberry pi releases the electromagnet and resets the physical toggle switch back to the “undone” position.

    Jukebox

    I have a physical jukebox I built, that mounts on the wall, that streams music from my Synology. It has a bunch of super satisfying to press clicky tactile LED illuminated arcade buttons for track select, and the track lists are shown on two 4K 12"x4" touch screens. There’s two more 1920 curved touchscreens for the marquee to show album art and for navigation. That’s a single raspberry pi controlling four separate touch screens and about 50 buttons. When you press a button to play a track, the button locks down, like on the old car radios, but the raspberry pi when switching tracks can physically retract or release the buttons too. There’s a software defined jog wheel that has an OLED display to control the volume, but the raspberry pi can turn the physical dial too. That’s wired into chatgpt, speech to text and text to speech, with cortana as the voice, and I can say things like “whatever happened to the lead singer of this band?” or “Play a random shuffle of more tracks from this year.”

    Memories

    18x 9" OLED screens that display a photo montage and photo gallery of family pictures all controlled by a raspberry pi.

    The Wall

    It’s a half-dozen salvaged OLED displays built into a false wall behind some sliding shoji screens. The displays are driven by some old piece-of-shit computer and GPU. They display nature scenes. It’s an enormous digital window.

    Home Health

    I have a smart dashboard that tracks my cats, phones, wallets, weather, and a bunch of other info that is displayed on an ipad by the coffee machine.

    Daily Guk

    It’s an old 21" android tablet that displays only good headlines, daily funny comics, weather, upcoming calendar, etc.

    Cat Toy

    It’s a 55" touch screen that entertains my cats. Android stick plugged into the back running some custom Unity3D games.

    Walking Timer

    I built a timer that tracks how long we walk, and how many laps we do around the block, and then I grab the images from the doorbell camera and use computer vision and gait analysis to automatically detects when we leave, when we return, and how many times we walked past the front door on our laps, and calculates our speed.

    CNC Controller

    I have a CNC controlled by a Raspberry Pi, which in turn is controlled by an Android tablet. So if the UI crashes, the CNC will continue running the gcode. This could now be replaced by other open source projects that have become available since I created this setup.

    RV Sync

    I have an all flash NAS at the RV which is set to automatically sync the video & music directories, and a few other directories, between my NAS at my home and the NAS in the RV so that all the contents are available when on the road, even if internet is a bit wonky.

    Retired Projects

    Cat Litter Robot

    This was a litter box, with a Kinect, a web cam, a Fujitsu robot arm, and Amazon’s Mechanical Turk. The robot arm was controllable via a web UI and it live streamed the litter box. When a cat did their business, the kinect detected that, weighed the litter box, and then sent a request to mechanical turk to have someone clean the litter box for 25 cents. And then when they were done, two more requests were sent to mechanical turk to have other people independently verify that the video showed the litter box being cleaned adequately.

    Giant Waterfall Ring Toss

    An art gallery in Los Angeles wanted something as an attraction due to the pandemic, so I salvaged a 55" display, built an enclosure, and installed it in the upper glass portion of the door frame of the art gallery, and people could play the classic “Waterfall Ring Toss” game by mashing a great big button.

    Remote Control Cat Toy

    I built a web browser controlled remote cat toy with one of those feathers on a wand controlled by a number of servos. And also added a laser point option too. Then had a bunch of web cams live stream the adoptable cats in the shelter. And people could donate a $1 to “play the arcade game” with cats that would get unlocked as people contributed more money.

    Planetarium

    I built a 12 foot wide classic planetarium driven by a raspberry pi and a lot of really strong high torque servos for a science museum exhibit. Kids could use a jog shuttle dial to rotate the planetary orbits.

    The Matrix Camera Capture Rig

    I built a cheap camera capture rig for a science museum that works like the Bullet Time rigs, but this was done with cheap point & shoot SONY cameras. Patrons sit on a couch, or pose in a movie set, and the capture rig takes a snapshot, puts a video on the monitor for them that orbits the subjects.

    Digital Sandbox RTS

    A box of physical “wet sand” that you could play in, that projected an image from three overhead projectors, and you controlled a small army you could send into combat against other people playing in the sandbox. Kind of like a simple Populous game. That was on display at one of the Los Angeles kids science museums for a few years.

  • BloodyIron@alien.topB
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    11 months ago

    I bought a Samsung Galaxy S4 from my GF like 6 years ago for $50. She of course upgraded her phone. I replaced the OS with LineageOS and slammed the ability to boot from ISOs over USB onto it. I now use it as a backup way to boot from ISOs over microUSB->USB-A in many different forms. It’s not as fast as I can get with better USB thumb drives, but in a pinch, it’s there for me! I know this isn’t exactly me writing code here, but I had to unlock the boot loader, replace the OS, root it, make sure Google Play worked on it (that was a touch of hacking, but again not my code), and stuff like that. So it’s a legit device as far as Google Play can tell and all that! Also the S4 has a removable battery so yay!

    Yes this is self hosted related because I use these ISOs for server stuff, be it Proxmox VE OS install, OPNSense, or even firmware bootable ISOs (although those I probably should have on a dedicated thumb drive that doesn’t require a battery to live lol).