boilerController
boiler
| boilerController | boiler | |
|---|---|---|
| 1 | 1 | |
| 0 | 0 | |
| - | - | |
| - | 6.2 | |
| over 3 years ago | 6 months ago | |
| C++ | Rust | |
| - | Apache License 2.0 |
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boilerController
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Ask HN: What have you built with ESPHome, ESP8266 or similar hardware
I built the controller for my wood gasification boiler, https://github.com/DusteDdk/boilerController
it sits in series with the regular controls, but allows me to start the fire and leave without needing to come back "after a while" to set the "turn off" temperature, it also fixes the issue of hysteresis where, after the furnace is empty of fuel, it will shut off due to cold air being drawn through, cooling the sensor enough to shut off, only to have the thermal mass of the boiler itself make the temperature rise above the turn-on threshold, which adds tens of power on/off cycles to the motor, on top of being annoying to listen to.
The wireless part is optional, but I use it to draw a temperature curve, so I can see when the right time to refuel is, if needed.
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