Ask HN: What do you do with your Raspberry Pi?

Re:Ask HN: What do you do with your Raspberry Pi? by sparker72678 on Monday June 24, 2019 @07:50PM (#20269745)

I do this primarily because I'm a weather geek. I don't _need_ this at all.

I do find it interesting to see the differences in temperature (and humidity, etc.) in the microclimate around my house compared to the city and greater metro area.

I also use the data to measure the performance of my home's HVAC system. Doing this _does_ require real-time local temperature and humidity data. But again, this is all for fun.

I just enjoy it.

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Re:Ask HN: What do you do with your Raspberry Pi? by ianai on Monday June 24, 2019 @07:58PM (#20269795)

What sort of sensors are available? Just the stuff off the pi site?

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Re:Ask HN: What do you do with your Raspberry Pi? by sparker72678 on Monday June 24, 2019 @09:42PM (#20270445)

For temperature only I prefer the 18B20 sensor. They’re very easy to interface with and they can be at the end of very long wires.

Adafruit has a bunch of sensors that work over the i2c bus; they’ve included python code for accessing the data as well, which makes it easy to get started.

There are sensors out there for everything. Absolutely everything.

https://www.adafruit.com/product/1782

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Re:Ask HN: What do you do with your Raspberry Pi? by colechristensen on Monday June 24, 2019 @08:04PM (#20269843)

You can integrate just about any sensor into a Pi depending on your knowledge. (any sensor you find on sparkfun would work for someone with a little determination)

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Re:Ask HN: What do you do with your Raspberry Pi? by klausjensen on Tuesday June 25, 2019 @06:09AM (#20272642)

>I just enjoy it.

That is as good a reason as any!

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Re:Ask HN: What do you do with your Raspberry Pi? by ip26 on Tuesday June 25, 2019 @01:18PM (#20276509)

How does the data benchmark the HVAC? Or are you actually combining weather + HVAC data to benchmark the home envelope (e.g. insulation)?

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Re:Ask HN: What do you do with your Raspberry Pi? by sparker72678 on Tuesday June 25, 2019 @01:30PM (#20276645)

Good question.

I'm really benchmarking the system against itself, year on year, by comparing the weather outside vs. performance (output temperature of the HVAC unit, average temperature inside the house).

I'm not trying to find an objective efficiency rating so much as monitor performance over time to see if it's changing.

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Re:Ask HN: What do you do with your Raspberry Pi? by ip26 on Tuesday June 25, 2019 @05:15PM (#20279030)

I see, I guess I didn't even consider the performance might meaningfully fluctuate.

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