Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 2 weeks ago

Hi kalda, thanks for the heads up.

Jasem has now moved the totorial to indilib.org/support/tutorials.html and added a link on the fron page :)

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 2 weeks ago

Hi kalda.

The new article is already published to indilib.org/develop/tutorials/177-howto-...no-meteostation.html

Hope you find it usefull :)

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 2 weeks ago

Hi Jasem. Looks like I was depending too mutch on the autogenerated html from the converter.

I have now removed the wanky TOC and fixed the h3, h4 issues, added the autotoc class.
I also split the HOWTO into 4 pages, and added the readmore tag.

Hopefully good to go now. (or is it? let me know)

I also edited the author alias for the DIY: INDI Telescope Cover artcle (so it matches).

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 3 weeks ago

Jasem, I just added the full howto as html to the subbmit article page.

If anyone like to know a good way of converting markdown to html, then this page is the best bet. dillinger.io/
Select Export as > Styled html, and you are good to go :)

My meteostation dropped out after a full on rain storm a few nights ago. Could be something random, but i'll have to visit the observatory and inspect.
Hopefully a easy fix.

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 3 weeks ago

So all my updates was merged into Indi master 6 days ago, so no need to clone my fork of indilib and change between branches anymore.

So here's the first week of weather data :)



Looks like my corrected sky temp is -18 for clear skies, and +7.75 for 100% clouds, so I'll have to update that in my firmware.

As to the pressure graph. Even thoug only 1.0k is marked, the graph shows values from 986 - 1036 (like thae gauge. Would be nice to show that more clearly, but over a week there is visible variations. I might have to calibrate the sensor some, as it went off the chart for a while.

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 1 month ago

That's a bummer!
It should be changed anyways, as i=++1 is no good, but do not know what it does.

In the pressure graph you removed the average line.
Is this a calculated line, that will change over time, or just a fixed value?

If you look at the graph over a week, could it be usefull to see the average?
If the weather is unstable with many local pressure variations, it could be nice to see if the average is high or low?
Just asking as I don't know a lot about meteorology.

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 1 month ago

Looks like you are getting closer.

I have not modified any of it. In meteostationWEB, I have only modified meteoconfig.py, and [stop,start]METEO.sh
Have you tried changing the i=i++1 to i += 1? and if so, then no MinMax fail?

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 1 month ago

Code a update to set the graph Y to 850 - 1100, and good to go? :cheer:

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 1 month ago

So.. i googled it.

1 hPa = 1mbar (think dht22 is mbar)

On this screenshot from the meteostation graphs
raw.githubusercontent.com/magnue/induino...-meteoweb_graphs.png

You can see that 1/3 up on the graph is 1k (1000), so I googled a little.

From en.wikipedia.org/wiki/Atmospheric_pressure (scroll down to Records)

The highest adjusted-to-sea level barometric pressure ever recorded on Earth (above 750 meters) was 1085.7 hPa
and
The lowest non-tornadic atmospheric pressure ever measured was 870 hPa

So if the scale of the graph is 0 - 3000, and the actual variation is 870 - 1085.7, then there is not much variation to see!
The line drawn would never use more than ~7.5% of the height of the graph.

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 1 month ago

Hm, not sure what you could cange.

The presure changes very slovly over time. If you have the meteostation up for the full graph time of tree monts, you should se some changes.

One thing is that the presure stays close to 1000. If the graph is 0 - 1100, then flux between 900 and 1100 shows as small variations.

You coul probably google minimum and maximum outside air pressure ever mesured, then adjust the min / max in the graph accordingly.

A graph shoving values from 800 - 1200, would give a more interesting graph. (800 - 1200, or something, just guessing numbers.)

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 1 month ago

Yes, that's correct.
I saw it after the last post and googled it.

i++ is not valid in python
i=i++1 is not valid syntax in any programming language

It should be
i += 1

I'm not sure how this happened, but the i=i++1 has been in the code for the last five years, so this part of the code has never worked....

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 1 month ago

That's very nice.
Don't like the Arduino IDE at all, and there is no refresh all files for when I edit them in vim.

Will give it a go

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 1 month ago

A value of more than 99.90% should not be a issue at all. However the sensor might have been unable to read, and the result nan.

I see in the exaple sketch that there is a check if the read is nan, so it can exit early. As dewpoint is calculated from the temp and humidity, it might have been doing aritmetric with nan (not a number)

I can add this check

// Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

It will not help with the sensor reporting 99.90% humidity, but can help the firmware to keep going on sensor failure.

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Magnus replied to the topic 'Building the induino MeteoStation with 3d printed housing' in the forum. 1 month ago

Gonzothegreat wrote:

Magnus_e wrote:

Gonzothegreat wrote: I was able to save my DHT22 sensor with a hairdryer, seems to be working ok now. I just need to review my box design a little bit so that the sensor is protected from direct rain.


Get the 3d printable housing :-)


I do not have a 3D printer :(


There are two options that I know about for those without a 3d printer.

The files are hosted on Thingiverse.com, and there is a 'order this part printed' button.

There is also 3DHub (i linked to it in the tutorial). Anyone with a printer can add a hub, so it's likely that there is one close to you.

I have not tried either my self, but if you google you might find some reviews.

PETG or ABS is good for the housing. Then TPU for the gaskgets (or other flex filament). The themplate to cut the window is ok in PLA.

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