wolf
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Posts: 43
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Post by wolf on Aug 13, 2019 6:41:16 GMT -8
I've attached a screenshot of a humidity graph. My SkyWeather is not yet boxed or anything, it's just laying on the table. As you can see the outside and inside humidity's are following around the same curve, however there is a difference of about 15% between the two. It seems like either or both of the sensors are not really accurate? Is one of the sensors faulty? The in and outdoor temperature are around the same, which I understand is the same respective sensor? So why is seems the temp to be ok, while the humidity is of by that much?
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Post by SDL on Aug 13, 2019 16:25:16 GMT -8
Hmm. That is really pretty bizarre. Do you have another source of information to see which is right? I would suspect the board humidity sensor is the one that tis off.
BP
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wolf
New Member
Posts: 43
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Post by wolf on Aug 14, 2019 10:50:35 GMT -8
I've checked with an old weather station, which gave humidity 46. At the same time the outside humidity is 44.5 And inside humidity is 33.541
Any idea why the inside humidity is this far of?
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Post by SDL on Aug 14, 2019 13:06:25 GMT -8
Good. I was hoping it was the internal sensor. It's cause by board heating or moisture on the internal sensor. You can turn on the heater to fix it with the BM680 chip but we don't provide a way of doing that in the software. This doesn't happen very often.
Unplug it, put the board under a light and let it heat for a day or so. That will do the same thing.
BP
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wolf
New Member
Posts: 43
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Post by wolf on Aug 14, 2019 23:31:08 GMT -8
Thanks. I'll try to fix that and get back regarding the result. Just to be sure thou: it is the weather board itself you are referring to right?
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Post by SDL on Aug 15, 2019 11:13:55 GMT -8
Yes, you can see the humidity sensor on the little projection on the PiWeather board.
BP
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wolf
New Member
Posts: 43
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Post by wolf on Aug 16, 2019 2:24:40 GMT -8
so frustrating... the lamp did not have the desired result...
the difference increased and its now of by 20 instead...
currentOutsideTemperature = 24.7 currentOutsideHumidity = 60.2 currentInsideTemperature = 24.95 currentInsideHumidity = 40.507
At the same time the old weather station console is showing 58%
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Post by SDL on Aug 18, 2019 12:59:50 GMT -8
OK. We tried! You have a bad PiWeather Board. First failure like this!
Here is your RMA number - we do want this back.
SwitchDoc Labs RMA#081819-01 909 S Shelley Lake Lane Spokane Valley, WA 99037
Please PM me your shipping address and we will cross ship.
BP
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wolf
New Member
Posts: 43
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Post by wolf on Sept 16, 2019 4:01:10 GMT -8
So, a week ago I finally got the last of my replacement parts. Didn't have time for testing until today.
Unfortunately I still see the same issue regarding the difference in inside and outside humidity:
currentOutsideTemperature = 22.5
currentOutsideHumidity = 41.7
currentInsideTemperature = 22.58
currentInsideHumidity = 29.498
Now I wonder if you've received and done any testing on my original weatherboard? Can it be something else in my setup causing this issue?
Btw, what the difference between ADS1015 and ADS1115? It seems the replacement board has a ADS1015 instead?
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Post by SDL on Sept 18, 2019 15:26:54 GMT -8
I would still guess it has something to do with the heating of the unit. There is a way to turn on the heater on the BMP680 and I believe you will burn out the difference. Yes, the light didn't work, but there is a way to turn it on. Check out the os.mbed.com/users/yangcq88517/code/BME680/docs/85088a918342/classBME680.htmlThere are ways to compensate for this. It's on our list, but I bet we don't get to until November. BP
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Post by SDL on Sept 18, 2019 15:27:55 GMT -8
The ADS1115 can sometimes be misdirected as an ADS1015. The software appropriately adjusts for the differences so it is transparent to the software.
BP
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wolf
New Member
Posts: 43
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Post by wolf on Sept 23, 2019 7:17:48 GMT -8
If you think the board is fine, I will for now concentrate on building the SkyWeather into a box and getting it to work with the weewx system.
After that I'll look more into these things, but I'm not really sure how to continue with this. The link above is to a c-api reference while the SkyWeather usage python. Do you mean that currently not all operations are available through python? Is the official api a c library and the python is just a layer on top of the c lib?
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Post by SDL on Sept 23, 2019 11:18:58 GMT -8
Get everything else working and then come back here!
BP
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