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Post by stumpybob on Aug 24, 2017 9:57:41 GMT -8
August 21, 2017 at 06:34 #25786 Thank you for your help. I finally had a chance to play with the weather station that you returned this weekend. It seems to be working since I removed the metal backing plate in the Bud box and replaced it with a sheet of Kydex. Connectivity is not great, but acceptable. It is weak but does not seem to be dropping the connection any longer. Here is a link to the WU page that I set up. the outdoor temp seems to have spikes frequently and wonder whether you have a clue what may be causing it. I added a Kydex shield to shade the sensor housing but it didn’t seem to help, maybe hurt. www.wunderground.com/personal-weather-station/dashboard?ID=KMTCOLUM27#history/s20170820/e20170820/mdailyThanks for the help. Sincerely, StumpyBob ~~~~~~~~~~~~~~~~~~~~~~~~~~ August 22, 2017 at 05:40 #25813 Update: The temp fluctuations don't seem to be related to the sun shade. As you can see on the temp graph for 8/21 the issue stopped at approx 9:45am, but returned about 10:20pm. Still FUBAR this morning. Also, I see that there is a reading available for dew point on WU. Is that number calculated from temp, pressure & humidity? The graph does not show a reading so far. Thank you, StumpyBob ~~~~~~~~~~~~~~~~~~~~~~~~~~ August 23, 2017 at 08:06 #25842 2nd Update: Still FUBAR this morning as well. Also, rain gauge continues to show slight precipitation. We have had zero rainfall lately. ~~~~~~~~~~~~~~~~~~~~~~~~~~ StumpyBob August 24, 2017 at 05:29 #25861 3rd Update: At approximately 2am this morning the temp shot up from 60F to 90F. No spike this time, just a steady +30F temp. Any ideas? Rain today and rain gauge seems to responding, but why the erroneous readings earlier? Temp is still screwed up at 11:52am Mtn time |
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Post by SDL on Aug 25, 2017 8:31:11 GMT -8
Hi StumpyBob,
Welcome to the forums! I heard you were positing on the old forums which we didn't think was possible!
1) On the rain bucket - Sounds like physical vibration or electrical noise to me. Just an occasional click. Try bracing the rain gauge better and if there is a big source of electrical noise occasionally (whatever that might be), you can make the system more noise resistant by adding an additional 10K Pullup on the rain interrupt line to 3.3V. This in parallel with the existing 10K Pullup should help a lot.
2) Is the AM2315 out of the rain? Is it getting wet?
3) +30 degrees? Is the sun hitting the sun shade at that point? What was the exact difference between those two values (convert to C).
BP
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dan
New Member
Posts: 4 
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Post by dan on Oct 26, 2017 13:39:21 GMT -8
Hey, I seem to be having a similar issue. for Outdoor temp and humidity. (data attached). - Outdoor Temp reads higher than expected (eg 30deg but actual is about 16) and then randomly reads correct temp
- Outdoor Humidity generally reads 99.9 but when temp reads correctly, humidity seems to also change.
should my outdoor sensor be exposed to the elements? or boxed in?
thanks.
Attachments:Data Example.xlsx (74.21 KB)
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Post by SDL on Oct 28, 2017 13:53:55 GMT -8
The AM2315 is NOT waterproof. It needs to be covered from the elements. Also, direct sun seems to "cook" the humidity sensor, but then it recovers (as you have seen).
What I would like from you is a set of numbers that show the sample before a jump and then what it jumps to. Calculate the difference.
BP
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dan
New Member
Posts: 4
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Post by dan on Nov 13, 2017 19:28:03 GMT -8
Thanks BP
I have placed the AM2315 under cover and is sheltered from the elements but i will move it this week to see if it makes a diffence. the numbers / data set was attached to the last post. in case you cannot view, the jump is approx 16 deg c each time. i am pinging the station every 5 mins. as an example on the 25th Oct 2017 @ 5:48am the temp reading was 13.7 deg c, then 5 mins later @ 5:53am the temp reading was 29.9 deg c.
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Post by johanv on Nov 13, 2017 22:46:55 GMT -8
As I reported in this thread: forum.switchdoc.com/thread/218/ourweather-weatherundergroundI can confirm that the jumps in temperature readings are always by 16°C up (and eventually down again to the expected value), and that it happens at different times/temperatures for different people. I analysed data from three Ourweather stations (one of which is my own). My sensor is not getting cooked - it is well screened, and there is forced air circulation too. |
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Post by SDL on Nov 14, 2017 15:38:40 GMT -8
16 degrees is a power of two. I wonder if it is a bit problem. Doesn't sound like a software problem. I'll try to reproduce it in the lab.
BP
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Post by johanv on Dec 3, 2017 21:07:58 GMT -8
![]() Yesterday was again a warm day - it is summer, after all - and for the greater part of the day my temperature readings were 16°C above the expected value yet again:  Or, if you prefer: Original data on WUAs you can see the dew point values also jump by what seems to be the same increment (it rained just after midnight, and then again in the evening, as you can probably see from the graph, where the two lines coincide). In my case this seems to happen more often when the temperature exceeds 30-odd degrees Celsius. Regards, Johan V. |
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Post by SDL on Dec 4, 2017 9:03:08 GMT -8
We still haven't gotten around to do this but it is on the schedule for the week of the 18th.
Feel free to keep bugging us!
BP
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Post by johanv on Jan 2, 2018 6:16:59 GMT -8
Bugbugbug...
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Post by SDL on Jan 2, 2018 8:23:35 GMT -8
Phhhttt. Still haven't gotten to this, but at least I have all the parts laid out. This week for sure!
BP
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mcinflyre
Junior Member
Posts: 53
Raspberry Pi: Yes
Other Device: PC, Mac and Android devices.
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Post by mcinflyre on Jan 24, 2018 19:48:26 GMT -8
Hi, I posted this on the "AM2315 Randomly Not Present...." thread but seems like this is a more appropriate place for it to go: This is the 1st post: Hi, I am having issues with my AM2315 on the WeatherPlus board. The temperature it is reporting is much higher than the actual temperature. I got the system up and running Saturday evening, January 20th. The data was good until yesterday, January 22, 2018 at about 6:48am. The outside temperature was in the low 50's F, but suddenly the AM2315 started reporting temp in the 70s. (F). It spiked to 78, then as the evening cooled down, the reported temperature went down as well, but 20+ degrees higher than normal.  The 2 drops in temps this morning were from when I rebooted the board. The first read or two were right, or close to right then the readings go back up. I did notice this when I first put everything together, but when I installed it outside, the correct temps were being reported. Using the WunderStation iPad app, I did see 2 spikes about a half hour apart, but the temps went back to normal. I am using the solar shield so no direct sunlight and the sensor has not been exposed to water. I actually ordered a 2nd AM2315 for a 2nd station and it was supposed to arrive today but it won't arrive until mid-day tomorrow. Once I have a 2nd AM2315 to test with, I can see if it is the sensor or if the issue is with something else. I have rebooted the WeatherPlus board 5 or 6 times, leaving it off for 2 to 5 minutes before power on. The sensor is consistently reporting the higher, incorrect data now. Lastly, I tried unplugging the sensor from the I2C hub and plugging it back in to ensure a good connection. I also tried plugging the AM2315 into the I2C1 port on the WeatherPlus board. Each test resulted in the same, invalid temperature readings. Any help would be greatly appreciated. Thanks, Richard |
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mcinflyre
Junior Member
Posts: 53
Raspberry Pi: Yes
Other Device: PC, Mac and Android devices.
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Post by mcinflyre on Jan 24, 2018 19:49:30 GMT -8
And the 2nd:
This weather system is getting very very frustrating... I am trying to build 2 weather stations and the WeatherPlus board came in today for the 2nd build. As a test, I replaced my original WeatherPlus board with the new one to see if that would correct or improve the temp readings. I configured the new board with wifi and updated the firmware to 027 as the original board.
The current temperature is actually 53-54F degrees according to other weather stations in my area. Now mine is going back and forth between readings of 78-80F to 48-49F. Both are wrong.
I have another AM2315 on order for the 2nd weather station so when that comes in I can replace that and see if that changes anything. I have the AM2315 mounted on the side of the box and using the solar shield. I don't know what else I can do.
The only thing worse than NO data is BAD data.
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mcinflyre
Junior Member
Posts: 53
Raspberry Pi: Yes
Other Device: PC, Mac and Android devices.
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Post by mcinflyre on Jan 25, 2018 14:27:27 GMT -8
Is there anyone who can help with this?
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Post by Powderjockey on Jan 26, 2018 8:08:55 GMT -8
Is there anyone who can help with this? Can you post some images to let us see what your weather station looks like? Possible positions for the AM2315 and other components. |
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