Edit: so it turns out that every hobby can be expensive if you do it long enough.

Also I love how you talk about your hobby as some addicts.

  • 👍Maximum Derek👍@discuss.tchncs.deEnglish
    11·
    1 year ago

    Electronics / microcontrollers.

    Took just a few months to go from, “I can make a wifi connected weather station for like $20 in components!?” to “oscilloscopes cost how much?”

    • choss@lemmy.ml
      0·
      1 year ago

      I would love to read about this $20 weather station! Do you maybe have a link?

      • 👍Maximum Derek👍@discuss.tchncs.deEnglish
        0·
        1 year ago

        Mine is pretty basic but is built on the shoulders of giants. Also that $20 was from pre-pandemic / pre-chip shortage prices. I’m guessing it’s more like $35 now, or maybe high $20s from ali express.

        I use Home Assistant for home automation. It has a now official addon called ESPHome for easily configuring esp devices and adding them to Home Assistant.

        I bought some cheap dev boards off amazon and thankfully they worked
    an esp8266 microcontroller with IC2 headers and a microusb port already onboard
    a bmp280 that measures temp, humidity, and barometric pressure
    a lux sensor with a plastic dome over the top
I soldered them together on a prototyping board

        All the components were supported by esphome, so I just needed to write the device config and then flash the devboard via esphome (in a web browser) over the built in usb.

        I 3d printed a housing for it, but you can also buy boxes. It needs airflow but also needs to stay dry. You can use a spray sealant to help avoid corrosion from ambient humidity. I skipped that step because I want to see how quickly it becomes problematic… and I should probably check on that.

        • gregoryw3@lemmy.mlEnglish
          1·
          1 year ago

          Just an fyi bmp280 is not real temperature but an estimation based on air pressure.