Another strange thing (to me at least) is in the graph, the label for “Max Solar” appears and overwrites whatever is stored in the label field for extra temp 3 in the graph setup. I was graphing my TED power readings but when the Max Solar label overwrote my kWH label, i thought there might be an issue there so I stopped graphing extra temp 3 temporarily. I assume that if i can ever get a W m/2 reading to show up here that it gets graphed in the color of the Max Solar label?
Can someone post their graph showing the W m/2 that is calculated from UV?
Latest graph and still no W m/2 estimate… #-o #-o
Have you made the settings on the “solar sensor in a jar” page? Can you post a screenshot of that?
No, I haven’t. What do I need to do there?
ok…Looks like my mistake. I thought that WD just did a crude calculation from “only” the UV sensor and Max solar stuff. I am waiting for the parts to come in (for christmas 
) so I can build the sensor discussed here. Guess i just have to wait until then. Thanks.
Sorry, I’m confused, just what flavor of WMR200 solar sensor are we trying to make work? Is it the “estimate solar from UV sensor” option?
Yes…that’s what I started out with. Just can’t seem to get a reading for that no matter what I do. Sorry for the confusion.
Are you getting a UV reading?
yes…
OK, well, I can’t help :?
lol…Thanks for trying though!
Thanks for all of your help and instructions on putting this together. I got the parts this morning for Christmas and soldered them up this afternoon. I’ll need to tweak the temp. settings for the solar setup but, for now, it’s working. With this major coastal snow storm coming in tonight and tomorrow, looks like I’ll have a little free time to play with it some more…as long as we don’t lose power! Thanks again!
OK, now that I have this up and running, what’s the best way to determine the correct temperature settings in the solar setup? The dialog suggests 1.1 and 7.1 as a starting point. How so?
Assuming you built the THGR800/810…what I did was wait until a nice clear sunny day, then I set up the resistance so that the temp value given by the THGR would stay below the max of the sensor. As for the minimum, I think any negative number should work ok, dark is dark.
And i believe the max of that sensor is 140 f? I didn’t use the potentiometer, i used the 2400 and 100 Ohm resistors as pictured in the link you gave originally. I do have plenty of 100 Ohm resistors though. I guess I could add more to try and keep the temp below 140 f? I am looking at meteohub sensor data for that and today was pretty sunny. I think tomorrow will be better. The sensor data there shows 216 f at around 11:40 am here. But there are some weird - temperature readings just before the data shows 0 f:
20101227213842 th1 74 39 -056
20101227213949 th1 66 39 -063
20101227214203 th1 58 40 -067
20101227214310 th1 52 40 -073
20101227214524 th1 40 40 -084
20101227214631 th1 33 40 -090
20101227214952 th1 10 41 -107
20101227215059 th1 -1 42 -115
20101227215206 th1 -14 42 -126
20101227215313 th1 -26 43 -134
20101227215741 th1 -88 45 -186
20101227215955 th1 -127 45 -221
20101227220102 th1 -147 45 -240
20101227220209 th1 -171 45 -262
20101227220423 th1 -222 45 -309
20101227220530 th1 -250 45 -335
20101227220637 th1 -277 45 -360
20101227220851 th1 -341 45 -419
20101227220958 th1 -373 45 -449
20101227221105 th1 -406 45 -479
20101227221212 th1 -437 45 -508
20101227221319 th1 -475 45 -543
20101227221426 th1 0 45 -105
20101227221533 th1 0 45 -105
20101227221640 th1 0 45 -105
20101227221747 th1 0 45 -105
20101227222001 th1 0 45 -105
20101227222108 th1 0 45 -105
20101227222215 th1 0 45 -105
It seems to do this just before going to 0 whether the temp is rising or falling away from zero.
Either way, after adding more resistance, are you saying I should set the high temperature setting in the solar setup to the max of the sensor (or however close i can come to it)?
What you need to do is ensure the sensor never reads a temp over the max. If you have the THGR810 the specs show -30C to 60C. So in full sunshine on a clear day you need to make sure the temp never exceeds 60C. I set mine up to allow for summer readings…the solar will be higher in summer. Once you get the resistance set you can watch to see what the THGR shows at sunset for a reading. That will give you your max and min readings. However, with mine, I had to do some tweaking in WD to get realistic readings. You can set what reading will give you “Sunny” conditions. The max and min settings, and the percentage that gives “Sunny” sky conditions at 80% (or whatever percentage you set) are all interactive and affect the other readings. Hope that makes sense. I had to tweak my settings twice a year, basically summer settings and winter settings. Just make a note of them so next year you don’t have to re-invent the wheel.
Once you get the numbers you should have no problem tweaking the settings to get the desired result.
Thanks a lot for all of your help. I added another 100 Ohm resistor this afternoon. I’ll have to wait till tomorrow to check it though.