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Post by gb0101010101 on Apr 5, 2019 11:19:07 GMT -8
First time humidity has gone up this high and seems to have reached a hard plateau at 93.7%
This seems very strange as it stayed there without fluctuating for nearly 12 hours. Any ideas what could be causing this?
AM2315 Temp is constantly fluctuating during this period as are all other sensors. So board is not locked up. Humidity value is read directly from sensor and then goes through formatting function that limits it to one decimal place.
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Post by SDL on Apr 5, 2019 12:19:28 GMT -8
First check the raw results coming from the AM2315. Do you have a log file?
BP
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Post by gb0101010101 on Apr 5, 2019 14:24:00 GMT -8
Yep, the raw read: "AM2315_Humidity = dataAM2315[0]" is being displayed on the REST page as OutdoorHumidity: 93.7
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Post by gb0101010101 on Apr 6, 2019 8:58:22 GMT -8
Attachment shows humidity over 24 hour period most of which it's stuck at 93.7%. My old weather station is showing 98% now and 96% yesterday.
I checked the code and there is nothing that has been changed from reading the sensor to displaying it on the REST page.
The AM2315 Temperature is reading accurately the whole time. I have also tried power cycling the board multiple times and changing the I2C plug. The senors is covered on top and shielded on sides (vented). It has only been outside for a few days.
AFAIK the sensor is operational and code is good. Think the sensor is faulty and is only capable of reading up to 93.7% Let me know if you want me to test anything else but I think I have covered everything already.
Still within my return window on Amazon but after their poor last handling of missing part I thought I would try getting a replacement from you directly. Unfortunately I already sent back the second kit. Can you send me a replacement senor?
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Post by SDL on Apr 6, 2019 10:57:14 GMT -8
Not a problem. Please send the AM2315 to us at:
SwitchDoc Labs RMA# 040619-01 909 S Shelley Lake Lane Spokane Valley, WA 99037
Please PM us your shipping address for the replacement.
BP
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Post by gb0101010101 on Apr 6, 2019 20:19:17 GMT -8
PM sent with shipping address. Let me know if you did not get it.
Thanks
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Post by gb0101010101 on Apr 8, 2019 9:49:27 GMT -8
Been playing around with data averaging to smooth sensor readings. Attached is smoothing of AM2315 Humidity using 6 data points over 30 seconds. The Dots show the smoothed data and the solid area shows the raw data. As you can see there is little difference as the sensor readings move around a lot with a lot of peaks and troughs showing 2% humidity difference in about 60 seconds.
Is it normal for Humidity so fluctuate so much? Or is this another sign the sensor is faulty? Attachments:
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Post by SDL on Apr 8, 2019 13:49:15 GMT -8
I don't really think that is indicative of the sensor being bad (the fluctuation), but the repeatability is supposedly +/- 0.1%. I've attached the AM2315 Specification for you to pursue. Interestingly enough the accuracy at 100% is +/- 3% so I suspect that you do have a bad sensor. It looks like it is in not in spec. www.switchdoc.com/wp-content/uploads/2015/07/AM2315-3.pdfBP
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Post by gb0101010101 on Apr 8, 2019 16:22:01 GMT -8
Thanks for the datasheet. Have saved it. So they say not to read more frequently than 3 seconds and repeatability is +/- 0.1%. My data is logged every 5 seconds and frequently is +/-0.5! The temp readings are way more stable. Guess I will wait and see with the new sensor.
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Post by SDL on Apr 9, 2019 11:58:37 GMT -8
You still need to send us your full name and address in PM.
Thanks!
BP
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Post by gb0101010101 on Apr 10, 2019 9:28:21 GMT -8
Sorry. PM sent with name.
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Post by gb0101010101 on Apr 15, 2019 20:34:29 GMT -8
Well we are moving in the right direction but the new sensor now maxes out at 95.7%. See attached pic. Interesting that still ending in .7 but now 2 % higher.
Any idea what could be causing this? Is it a bad batch of sensors? Can you test the sensor I sent back and confirm that it maxes at 93.7? Am I the only one that this has happened to?
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Post by SDL on Apr 17, 2019 12:35:12 GMT -8
Hmm. You are the only one. Ours go to 99.9 in all of our outdoor instruments.
I will take yours and test.
Something is causing this!
BP
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Post by gb0101010101 on Apr 18, 2019 14:17:38 GMT -8
Thx for letting me know my case is unique. This will help in debugging. I will do further checks to see if it is an issue with my custom code. Let me know what your results are on the sensor I sent back. AFAICT the readings were unaltered through to the REST reporting.
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Post by gb0101010101 on Apr 25, 2019 21:02:22 GMT -8
I finally got around to testing the new sensor with stock v35 firmware which meant bringing the station inside and breaking out a humidifier. It continued to report OutdoorHumidity as 95.7 on the REST page as the maximum. I also tried changing Groove plugs using both built in ports and using the extender board. There was no difference.
I have also replaced the power supply with a higher amp rated one from Rpi as someone else on forum mentioned this might be a problem.
I can't think of anything else I can test here. Do you have any suggestions? Did I get another faulty sensor? How do we proceed so that I get proper 100% humidity readings? Did you have time to test the sensor I sent back? If so what did you find?
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