dorothy
boiler
| dorothy | boiler | |
|---|---|---|
| 2 | 1 | |
| 16 | 0 | |
| - | - | |
| 3.6 | 6.2 | |
| about 2 months ago | 6 months ago | |
| OpenSCAD | Rust | |
| - | Apache License 2.0 |
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dorothy
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Agricultural IoT System Sends Power Through the Soil
This is a really cool idea for lots of reasons, but especially because you could leave sensors buried forever. This lends itself well to long term soil monitoring, which is a somewhat unsolved problem (especially in no-till environments).
Agriculture is a harsh place for sensitive electronics. My approach has been to make them cheap enough to be nearly disposable (shameless plug, https://github.com/alexose/dorothy), but this still requires a lot of human intervention to keep everything chirping.
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Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
I built out a remote sensing platform using ESP32 + LoRa. The attempt was to hit the sweet spot between cheap, easy, and reliable:
https://github.com/alexose/dorothy
boiler
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Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
I tend to roll my own with rp-picos for no good reason other than they're easy. Wattmeter for a toy solar installation - broadcasts a UDP packet every few seconds, which I then record into a staging JSON log that gets ingested into DuckDB. Little pico-w wifi temperature sensor that feeds into the raspberry pi zero that controls my boiler.
Thread about the boiler: https://hachyderm.io/deck/@dave_andersen/111579107766689328
github with some really crappy rust code: https://github.com/dave-andersen/boiler
The boiler control is the fun one but it's not entirely embedded stuff. Runs a little control loop that turns down the boiler modulation based upon the difference between target and current temperature. Improves operating efficiency by a fair bit and reduces temperature swings. Makes me wish residential HVAC systems were more sophisticated - these are things any good industrial control system can do.
Made an "ok to wake" light for my son -- added a controllable LED strip to his clock with a pico-w in it that changes from orange to multicolored at 6:30am as a non-intrusive "yes, you can come bug your parents" signal.)
https://hachyderm.io/deck/@dave_andersen/112091315519210298