Fun projects (aka "I'm bored…")

(x-hugh-org-publish-fun-projects)

• https://www.thingiverse.com/thing:42858
• http://yoctopuce.com/EN/article/how-to-measure-wind-part-2
  • but not working – check archive.org

• https://hackaday.com/2020/10/21/small-spotify-remote-broadens-musical-horizons/
• https://everynoise.com/
• Going to play around with duplicating this on my own – a fun learning exercise. Maybe web interface? Not sure.

• https://www.pollen.com/forecast/historic/pollen/98225

• Request:

  {
    "GET": {
      "scheme": "https",
      "host": "www.pollen.com",
      "filename": "/api/forecast/historic/pollen/98225/30",
      "remote": {
        "Address": "52.23.90.186:443"
      }
    }
  }
  

• Response:

  {
    "Type": "pollen",
    "ForecastDate": "2023-05-22T00:00:00-04:00",
    "Location": {
      "ZIP": "98225",
      "City": "BELLINGHAM",
      "State": "WA",
      "periods": [
        {
          "Period": "2023-04-23T05:30:32",
          "Index": 1.7
        },
        {
          "Period": "2023-04-24T05:30:32",
          "Index": 4.2
        },
        {
          "Period": "2023-04-25T05:30:33",
          "Index": 8.8
        },
        {
          "Period": "2023-04-26T05:30:32",
          "Index": 8.1
        },
        {
          "Period": "2023-04-27T05:30:32",
          "Index": 8.5
        },
        {
          "Period": "2023-04-28T05:30:32",
          "Index": 8.6
        },
        {
          "Period": "2023-04-29T05:30:33",
          "Index": 9.7
        },
        {
          "Period": "2023-04-30T05:30:33",
          "Index": 7.9
        },
        {
          "Period": "2023-05-01T05:30:32",
          "Index": 7.8
        },
        {
          "Period": "2023-05-02T05:30:32",
          "Index": 8.4
        },
        {
          "Period": "2023-05-03T05:30:32",
          "Index": 7.4
        },
        {
          "Period": "2023-05-04T05:30:32",
          "Index": 7.8
        },
        {
          "Period": "2023-05-05T05:30:32",
          "Index": 1.9
        },
        {
          "Period": "2023-05-06T05:30:33",
          "Index": 4.7
        },
        {
          "Period": "2023-05-07T05:30:32",
          "Index": 6.4
        },
        {
          "Period": "2023-05-08T05:30:33",
          "Index": 7.6
        },
        {
          "Period": "2023-05-09T05:30:32",
          "Index": 7.7
        },
        {
          "Period": "2023-05-10T05:30:32",
          "Index": 8.1
        },
        {
          "Period": "2023-05-11T05:30:32",
          "Index": 9
        },
        {
          "Period": "2023-05-12T05:30:32",
          "Index": 8.9
        },
        {
          "Period": "2023-05-13T05:30:32",
          "Index": 9.1
        },
        {
          "Period": "2023-05-14T05:30:32",
          "Index": 9.2
        },
        {
          "Period": "2023-05-15T05:30:32",
          "Index": 9.2
        },
        {
          "Period": "2023-05-16T05:30:32",
          "Index": 7.7
        },
        {
          "Period": "2023-05-17T05:30:32",
          "Index": 7.9
        },
        {
          "Period": "2023-05-18T05:30:32",
          "Index": 8.5
        },
        {
          "Period": "2023-05-19T05:30:31",
          "Index": 8.5
        },
        {
          "Period": "2023-05-20T05:30:32",
          "Index": 8.6
        },
        {
          "Period": "2023-05-21T05:30:32",
          "Index": 9
        },
        {
          "Period": "2023-05-22T05:30:33",
          "Index": 5.7
        }
      ],
      "DisplayLocation": "Bellingham, WA"
    }
  }
  

• https://www.reddit.com/r/AskElectronics/comments/di71iu/solar_led_light_disable_dimm_mode_to_off/
• measured voltage to light: 2.65 V
• Can hook up VIN and GND on ESP32 to battery, and red power LED comes on
• Can also get it to turn on by connecting them to the power to the light (eg, 2.65V)

• The other open leads beside the ones to the light also work:

  # Gnd        Pos
  o o x o      o o x o
  

  • where o are open ones, and x are the one in use

• https://blog.arduino.cc/2019/03/05/detect-objects-with-this-diy-radar-display/

• https://hackaday.com/2021/07/24/esp8266-adds-wifi-logging-to-ikeas-air-quality-sensor/
• https://github.com/Hypfer/esp8266-vindriktning-particle-sensor
• https://esphome.io/components/sensor/pm1006.html

• https://en.wikipedia.org/wiki/Winogradsky_column
• https://joyfulmicrobe.com/winogradsky-column-workbook/
• https://www.scientificamerican.com/article/bring-science-home-soil-column/

• https://hackteria.org/wiki/DIY_microscopy
• https://publiclab.org/notes/partsandcrafts/11-26-2017/building-a-raspberry-pi-microscope
• https://publiclab.org/notes/MaggPi/04-08-2018/raspberry-pi-microscope-close-up-lens-system
• https://publiclab.org/notes/MaggPi/05-21-2018/community-microscope-resolution-test
• or not DIY:
  • https://joyfulmicrobe.com/home-microscope/ : swift sw380b
  • https://atinyworld.org/beginner-guide/ : the omax listed below, $230
  • https://scopedetective.com/my-gear-list/
  • https://www.amazon.ca/AmScope-B120C-Magnification-Illumination-Double-Layer/dp/B009JROROU
    • abbe, mechanical, binocular, siedentopf head
    • no trinocular
    • $310
  • https://www.amazon.ca/SWIFT-Trinocular-Microscope-40X-2500X-Mechanical/dp/B099N1CRG7
    • abbe, mechanical, trinocular, usb 5MP camera, siedentopf
    • SW350T
    • $457

      • 350 vs 380:

        This is the official response ”The image quality of the two microscopes is similar. The difference lies in the appearance. At 40 times magnification, the clear range of 380T is larger, which is 70%, 350T is 50%, and the fine-tuning accuracy is higher for 380T, which is 3.4 microns, and 350T is 27 microns."

      • https://www.reddit.com/r/microscopy/comments/fsinwh/swift_sw350t_vs_swift_sw380t/
  • https://www.amazon.ca/OMAX-40X-2500X-Trinocular-Microscope-Mechanical/dp/B01CESYP4C/
    • abbe, mechanical, trinocular, LED
    • no siedentopf
    • $457
  • https://www.amazon.ca/OMAX-40X-2000X-Binocular-Microscope-Mechanical/dp/B005TJ5CEG/
    • $230
    • abbe, mechanical, binocular
  • https://www.ebay.ca/itm/154649344561
    • omax trinocular, abbe, mechanical stage, LED light
    • no siedntopf
    • $250!
    • a lot of stuff on sale here, ships from canada

• https://www.media.mit.edu/posts/build-a-food-computer/
• https://www.media.mit.edu/projects/personal-food-computer/overview/

• https://www.silabs.com/development-tools/thunderboard/thunderboard-sense-two-kit
• Case:
  • https://www.thingiverse.com/thing:2426469
  • https://www.thingiverse.com/thing:4940389/comments
• https://github.com/drzwave/HBMSGreenHouse/blob/f65a57033526551f44ba0bf4940fd12e4abdec48/software/archive/ThunderSpeak.py
  • https://gist.github.com/hornej/bf56d8103a1c2d685579f3628949a442
• https://docs.edgeimpulse.com/docs/silabs-thunderboard-sense-2
  • These folks look really interesting

• Next steps
• https://github.com/quadule/colorscore

• http://manuscript.advancejournals.org/uploads/516191730f661cb3f19fce812b9f43502a855b779d2cb821f392d87702cd4c16/Manuscript/11885.pdf
• https://www.balena.io/blog/build-a-simple-radiation-monitor-using-a-raspberry-pi-influxdb-and-grafana/
• https://www.aliexpress.com/item/32884861168.html?spm=a2g0o.productlist.0.0.5faf6aa9OuQXsc
• https://www.pascalchour.fr/ressources/cgm/cgm_en.html
• https://radmon.org/index.php/ <– send data here

• mpu9250 might do this
  • I've got the 6050 – no magnetic sensor
• But also, there's the Thunderboard Sense – it uses the SI7210, which measures in 10s of microTeslas
• https://duino4projects.com/arduino-measuring-earths-magnetic-field-magnetometer-hmc5883l-using-arduino/
• https://www.instructables.com/DIY-Magnetometer-for-Geophysical-Survey-and-Archae/
• https://www.meccanismocomplesso.org/en/arduino-measuring-the-earths-magnetic-field-with-the-magnetometer-hmc5883l/
  • Oh, I bet that's the sensor in the wind direction sensor I got from AliExpress
• https://www.instructables.com/Arduino-Magnetometer/
  • fun display
• http://www.geomag.bgs.ac.uk/education/earthmag.html

  • Earth's magnetic field:

    At the Earth's surface the total intensity varies from 22,000 nanotesla (nT) to 67,000 nT. Other units likely to be encountered are the Gauss (1 Gauss = 100,000 nT), the gamma (1 gamma = 1 nT) and the Ørsted.

  • That's .22 to .67 Gauss, or 22 to 67 microTesla
  • https://www.geometrics.com/resource-sub/magnetometry-theory/
    • includes link to book on magnetic surveying
  • https://hackaday.io/project/168083-opensource-aurora-monitor-for-schools-home
    • https://iopscience.iop.org/article/10.1088/1361-6552/aaacb2/meta

Went with Raspberry shake in the end

• http://marksbench.com/electronics/esp32-cam-low-power-trail-camera/
• https://www.arducam.com/esp32-machine-vision-learning-guide/
• https://dronebotworkshop.com/esp32-cam-intro/

• https://www.thingiverse.com/thing:2846772/comments

• https://www.kickstarter.com/projects/publiclab/infragram-the-infrared-photography-project
• https://publiclab.org/notes/cfastie/10-29-2012/agricultural-trial-mapping
  • Also, Public Lab seems really interesting…

• https://www.sparkfun.com/news/2369

  One measurement that causes a lot of confusion is "Equivalent CO2." The CCS811 will report equivalent CO2 in parts-per-million, but that number can be a little bit deceptive. It's important to recognize that the CCS811 cannot measure CO2 and that the "equivalent CO2" being reported by the CCS811 has nothing to do with actual CO2 present in the area. So why the heck is it called "CO2 Equivalent Units" and why would anyone need it? The answer comes down to the use of indoor air quality sensors — like the CCS811 — in HVAC control.

  Building ventilation, it turns out, is all about occupancy. The more people present in a space, the more CO2 they're exhaling, and the more ventilation is required. Now, it's certainly possible to design and operate an HVAC system around the design occupancy of a building or room, in other words the number of people expected to use a space. But this means that you may be wasting energy at times when the building isn't actually occupied. To solve this problem, many HVAC systems will monitor the concentration of CO2 in a given area in order to calculate the amount of air exchange needed in a scheme called "demand-controlled ventilation."

  Makers of indoor air quality sensors that don't detect CO2 (in an attempt to market their devices for demand-controlled ventilation systems) have correlated rising CO2 levels in certain environments to rising VOC levels. It's important to recognize that this is a correlation of the change in levels and not a correlation of the levels themselves: High VOC concentrations are not analogous to high CO2 concentrations. But it can be said that if the VOC concentration of a given space begins to slowly climb above baseline, it probably corresponds to room occupancy and an increase in CO2 (because humans exhale both CO2 and VOCs). Therefore, the manufacturers of these devices report the "CO2 Equivalent Units" with respect to this correlation so that their devices might fit more easily into an existing demand-controlled ventilation scheme.

• Library: https://github.com/maarten-pennings/CCS811

• http://qrp-labs.com/newssep2017.html
• But see libre.space concerns about transmitters/formats (was in IRC)
• https://www.balloonchallenge.org/tutorials

• http://kiss.caltech.edu/new_website/techdev/seafloor/seafloor.html
• https://blog.adafruit.com/2016/09/13/drifting-buoy-project-has-been-floating-and-transmitting-for-nearly-two-months/
• http://mdbuoyproject.wixsite.com/default/buoy
• http://www.qsl.net/zl1rs/oceanfloater1.html
• https://mdbuoyproject.wixsite.com/default/faq
  • https://www.jhuapl.edu/news/news-releases/191111-basement-tinkerer-pavalko-helps-clean-ocean
• https://hackaday.com/2023/12/28/keeping-watch-over-the-oceans-with-data-buoys/#more-651432
• https://hackaday.com/2020/08/13/drone-buoy-drifts-along-the-gulf-stream-for-citizen-science/
• https://hackaday.com/2017/11/29/intellibuoy-keeps-track-of-the-water/
• https://hackaday.com/2017/04/28/low-cost-drift-buoy-plies-the-atlantic-for-nearly-a-year/

• https://hackaday.io/project/20458-open-source-underwater-glider
• https://publiclab.org/notes/ajawitz/07-11-2015/buoyancy-driven-underwater-glider

• https://blog.abluestar.com/alternatives-to-the-vancouver-hackspace

• http://www.muonhunter.com/
• http://cosmicwatch.lns.mit.edu/
• https://hackaday.com/2016/10/15/dirt-cheap-muon-detector-puts-particle-physics-within-diy-reach/

• https://github.com/adamian98/pulse

• https://github.com/facebookresearch/pifuhdpp

• https://github.com/opendatacam/opendatacam
• See balena IOT Happy Hour on this

• https://www.birdvancouver.com/banding-volunteer/

• https://openbot.org

• https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0242459#sec019

• https://arstechnica.com/science/2020/12/as-the-world-quieted-down-in-2020-raspberry-shakes-listened/
• https://raspberryshake.org/
• Huh: https://tc1seismometer.wordpress.com/software-sites/
• https://www.hackster.io/mircemk/extremely-sensitive-cheap-homemade-seismometer-175231
• https://www.boisestate.edu/cgiss/building-a-tc1-system/nerdaq/
• https://github.com/brianxfury/Low-Cost-Arduino-based-Seismometer-Project
• https://community.raspberryshake.org/t/universally-talk-about-rpis-and-geophones/3344
• https://community.raspberryshake.org/t/my-current-python-report-for-code-examples/3285
• https://shop.raspberryshake.org/license/
• https://manual.raspberryshake.org/developersCorner.html
• https://github.com/marcopovitch/sl2influxdb
• https://manual.raspberryshake.org/udp.html#udp

https://hackaday.com/2021/02/13/spinach-photo-prints/#more-450516

https://thecavepearlproject.org/2019/08/30/creating-a-normalized-vegetation-index-sensor-with-two-leds/

• https://cires.colorado.edu/news/measuring-wind-microphones
• https://hackaday.io/project/10543-sound-based-weather-station
• https://hackaday.com/2021/07/06/open-source-ultrasonic-anemometer/
• https://asa.scitation.org/doi/pdf/10.1121/1.412293
• https://deepblue.lib.umich.edu/bitstream/handle/2027.42/76876/AIAA-1966-440-561.pdf?sequence=1
• https://asa.scitation.org/doi/10.1121/1.486288
• https://www.who.int/news-room/fact-sheets/detail/ambient-(outdoor)-air-quality-and-health

• https://tinymlbook.com/
• https://forums.tinyml.org/

• https://thecavepearlproject.org/2020/10/27/hacking-a-capacitive-soil-moisture-sensor-for-frequency-output/
• https://thecavepearlproject.org/how-to-build-an-arduino-data-logger/

• http://techlib.com/electronics/lightningnew.htm
• http://easycircuit012.blogspot.com/2012/12/lightning-detector-circuit-diagram.html

• https://hackaday.io/project/184754-nerdfeeder

• see CoSMo_{Spring2022newsletter.pdf} in this directory

Good overview of calculating power requirements for solar charging a battery: https://hackaday.io/project/185217-diy-solar-bottle-lamp

• https://github.com/PetteriAimonen/focus-stack
• https://hackaday.com/2019/12/30/focus-stacking-for-tiny-subjects/

• https://technoreview85.com/how-to-program-esp-32-cam-using-arduino-uno-board/

• https://www.fgsensors.com/
• https://hackaday.io/project/168083-opensource-aurora-monitor-for-schools-home
  • pointer to fgsensors
  • also for aurora monitor

• http://www.tomtilley.net/projects/lollybot/

• https://opensource.com/article/19/9/web-apps-sysadmins
• https://github.com/themesberg/volt-bootstrap-5-dashboard

• https://www.rtl-sdr.com/cheap-and-easy-hydrogen-line-radio-astronomy-with-a-rtl-sdr-wifi-parabolic-grid-dish-lna-and-sdrsharp/

• https://hackaday.io/project/11776-otto-diy/logs
• https://www.ottodiy.com/

• https://hackaday.io/project/186782-solar-harvesting-wi-fi-camera/details
  • A lot of details, including:
    • Energy budget
    • Details about energy harvesting modules (who knew?)
    • Links to AliExpress waterproof camera cases and everything else…god they're cheap

• Echo Meter Touch
• Hooks up to smartphone, Ids calls like Merlin does for birds
• apparently at Coquitlam library – but looked on [2022-08-22 Mon] and could not find any mention. They do have a tech centre with telescopes, binos, 3d printers, etc – so maybe just not up on their website?
  • Emailed Coquitlam Library to ask.

• https://docs.openvehicles.com/en/latest/introduction.html
  • aha: this is a whole thing. adapters start around $225 and are backordered: https://medlockandsons.com/product/ovms-v3/
• https://python-obd.readthedocs.io/en/latest/
• https://github.com/ConnorNovak/python-OBD-influxdb
• https://www.instructables.com/OBD-Pi/
• https://github.com/JejuSoul/OBD-PIDs-for-HKMC-EVs
• Idea/inspiration: http://arduinodev.com/obd-ii-gps-accelerometer-gyro-data-logger-based-on-arduino-mega2560/

• https://www.reddit.com/r/vim/comments/pmqj0x/kmonad_gives_you_superpowers_youll_end_up_using/

• https://hackaday.com/2019/01/03/reset-your-router-the-modern-way/
• https://hackaday.com/2019/11/02/router-rebooter-without-the-effort/
• https://hackaday.com/2018/01/31/router-rebooter-eliminates-hassles/

• https://app.pullrequest.com/signups/reviewer

• Also: aws.amazon.com/earth

• https://hackaday.com/2020/01/17/oceanography-as-open-as-the-seas/

• https://hackaday.com/2023/01/13/detecting-algal-blooms-with-the-help-of-ai/

• https://hackaday.com/2020/08/13/drone-buoy-drifts-along-the-gulf-stream-for-citizen-science/
• https://projectwilson2020.wixsite.com/mysite/technical

https://www.exploratorium.edu/food/soaking-pasta

• https://www.instructables.com/Arduino-Water-Quality-Monitoring-System/

• http://www.ulisp.com/show?1B83

• https://inaturalist.ca/projects/queensborough-biodiversity-project/join

https://makersportal.com/blog/portable-gps-tracker-with-arduino

• good example of what can be done w/the gps agent I got from dad

• What I ordered: https://www.aliexpress.com/item/32676135779.html?spm=a2g0s.9042311.0.0.53c14c4dspIm0P
  • DS18B20 sensor.
  • https://www.aliexpress.com/item/32832538686.html?spm=a2g0s.9042311.0.0.53c14c4dspIm0P
• Code:
  • https://create.arduino.cc/projecthub/TheGadgetBoy/ds18b20-digital-temperature-sensor-and-arduino-9cc806
  • https://lastminuteengineers.com/multiple-ds18b20-arduino-tutorial/
• My code: [[file:///home/aardvark/dev/arduino/arduino-ds18b20-demo/build-uno][file:///home/aardvark/dev/arduino/arduino-ds18b20-demo/build-uno]

• https://forums.linuxmint.com/viewtopic.php?f=47&t=309829&sid=5c31bd7fd6b68a6f4684b6aaa473e77a&start=20
  • Linux endoscope
• https://www.instructables.com/Make-a-WiFi-Camera-Bird-Box-Cheepy-Cheap/
• https://www.chzsoft.de/site/hardware/reverse-engineering-a-wifi-microscope/
• https://shkspr.mobi/blog/2020/06/review-wifi-endoscope/

https://medium.com/@twfi/how-to-create-a-wi-fi-tank-with-a-camera-b7bf0f38f8b2#a66a

• sooo many things to dive into: https://www.semianalysis.com/p/google-we-have-no-moat-and-neither
• https://bair.berkeley.edu/blog/2023/04/03/koala/
• https://github.com/tloen/alpaca-lora
• https://lmsys.org/blog/2023-03-30-vicuna/

• https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=330213
• https://wiki.dd-wrt.com/wiki/index.php/D-Link_DIR-615_rev_E3
• https://dd-wrt.com/support/router-database/?model=DIR-615_E3
• …OTOH, I just d/l https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2021/09-17-2021-r47461/dlink-dir615e3/dir615e3-factory-to-ddwrt-firmware.bin, used that in the default factory gui to update, and it worked 🤯
  • came up w/IP addr of 192.168.1.1
  • set user/password to "admin"/"admin"
    • telnet (!) in as root/admin worked
    • enabled SSH
  • https://wiki.dd-wrt.com/wiki/index.php/Client_Mode_Wireless
    • this seems to have worked at home nicely

• https://n8henrie.com/2023/06/write-a-firefox-extension-in-python/

• https://vancouver.weatherstats.ca/about.html

• https://vancouver.weatherstats.ca/charts/wind_direction-quarterly.html
• click on "charts" link for more ideas

• Have a look in Downloads: …or just re-download

https://www.anecdata.org/ https://spacemath.gsfc.nasa.gov/Citizenscience.html

• https://nasaworldwind.github.io/WebWorldWind/

• https://thepoorengineer.com/en/quaternion/
• https://www.youtube.com/watch?v=oIVzNR2M-WY

• https://news.ycombinator.com/item?id=36193315

• https://medium.com/sentinel-hub/how-to-make-the-perfect-time-lapse-of-the-earth-351f214527f6
• See also: https://medium.com/sentinel-hub/how-to-co-register-temporal-stacks-of-satellite-images-5167713b3e0b

• https://dynomight.net/better-DIY-air-purifier.html

• https://github.com/loiccoyle/shazam-cli
• "To use these scripts you'll need your own API key. It can be obtained from rapidapi you'll need a RapidAPI account and subscribe to the Shazam API (there is a free a plan). "
  • RapidAPI looks like fun on its own…

• https://infinigen.org/

• https://www.youtube.com/watch?v=gt3Ad5_Z5IA
  • no dry ice – just a metal heatsink + the contents of a freezer ice pack
• https://hackaday.com/2023/06/29/demo-relativity-for-a-c-note/

• from https://github.com/angrybacon/dotemacs
• https://github.com/akermu/emacs-libvterm#message-passing

Enhancing TreeMMoSys with a high-precision strain gauge to measure the wind-induced response of trees down to the ground: https://doi.org/10.1016/j.ohx.2022.e00379

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0245631

• https://www.pcbway.com/project/shareproject/_pistrelle_a_Scanning_Bat_Detector_a89c3464.html
• https://www.omenie.com/about-pipistrelle.html
• surface mount soldering…well beyond me. But fun!

• https://open-meteo.com/

• https://en.wikipedia.org/wiki/Citizen_Weather_Observer_Program
• https://cocorahs.org/Canada.aspx

• https://github.com/HclX/WyzeHacks/

• https://www.fgsensors.com/diy-magnetometer-kit
• 100 Euros; could I do something myself?

• https://smallholder-sha.org/
• https://smallholdersha.files.wordpress.com/2020/08/soiltoolkitmanual_sv6.4_edits_8_2020_pom_rewrite_changeaccepted.pdf

• https://efficientml.ai/

https://interpreterbook.com/

• https://hackaday.com/2023/10/08/who-needs-sea-monkeys-get-planktoscope/#comment-6689808
• https://www.frontiersin.org/articles/10.3389/fmars.2022.949428/full

• https://tote.readthedocs.io/en/latest/index.html

• https://hackaday.com/2023/10/28/cheap-yellow-display-builds-community-through-hardware/

• https://tote.readthedocs.io/en/latest/intro.html
• https://www.instructables.com/Cardboard-Spider-DIY-Quadruped/

• https://www.pinholephotography.org/how-to-solargraphy

• https://archive.org/details/scientificameric00ston/page/368/mode/2up
• https://www.betterworldbooks.com/product/detail/the-scientific-american-book-of-projects-for-the-amateur-scientist-BWB537896

• https://news.ycombinator.com/item?id=38822164
• https://github.com/jart/emacs-copilot
• https://github.com/karthink/gptel
• also: https://www.phind.com

• Holy shit, there are a bunch of these
  • https://learn.adafruit.com/walkmp3rson-personal-mp3-tape-player - uses Pi2040
  • https://www.thingiverse.com/thing:1784887
  • https://www.thingiverse.com/thing:3451308
• The decoder modules are super cheap - $1 to $7. Look for VS1053 or "Tenstar TF u disk mp3 player"

• https://www.youtube.com/@BucketPonds

• https://www.edmprod.com/how-to-make-jungle-music/

• https://remap.jrc.ec.europa.eu/Advanced.aspx
• https://remon.jrc.ec.europa.eu/About/Rad-Data-Exchange

• https://hackaday.com/2016/07/06/seeing-the-truly-invisible-with-diy-shortwave-uv-imaging/
• also has a hackaday talk up – search for the article

• https://justine.lol/oneliners/

• https://www.ikkaro.net/what-tinyml-is/

• https://github.com/nickbild/local_llm_assistant

https://hackaday.com/series_of_posts/lithium-ion-batteries-are/

• https://hackaday.com/2024/03/20/diy-rc-controller-built-with-old-school-parts/