I know there are a couple of threads going on about this, but I don’t want to hijack them to ask
my own question, so am starting a new thread. I have a couple of questions:
I’ve been reading http://discourse.weather-watch.com/t/40210 and http://discourse.weather-watch.com/t/46553 and I wonder if either
of those posters could identify the LDR they used. I’d like to give this a try with an extra temperature
sensor I have for my Honeywell TE923W. The sensor is not weather proof, so I’ll have to figure out
how to take care of that, but I don’t see that as a problem. I can enclose it somehow and remote
mount the LDR.
Another question I have, and maybe Brian or someone who has done this can answer: The TE923W
has a UV sensor, but no sunlight sensor. If I go with the conversion of a temperature sensor to a
light sensor, can WD still make use of the UV sensor to record UV, but use the modified sensor for
recording light levels? It’s unclear to me from the Solar set up pages how I would do that, if it’s indeed
possible at all.
I own a 923 as well, but currently I’m using the sensor in the anemometer as a pseudo-solar sensor. I’ve thought about using the extra thermo/hygro sensor in a jar, but currently have it in my utility room. I may still use it that way, using the instructions from the WMR200 solar-in-a-jar premise. I just didn’t want to waste a unit that did both thermo and hygro on something only thermo based.
Answer to number 2 is the derived solar can be recorded separately from the UV
Thanks for the replies, Dan and BigOkie. I decided to open up the extra temp/humidity sensor
to see what I could figure out. I have a CdS LDR from an old night light that I thought I’d play
with. However, what I found when I opened the unit was that the sensor, mounted on a PCB
outside the main cavity, has several wires running to it from the main board; these wires are
labeled: PWR, GND, CLK, and DATA. So, I surmise that this is actually an I2C digital device and
therefore I cannot just replace with an LDR. It looks a bit, but not exactly, like the unit in the
picture below. I guess that’s the end of this project.
BigOkie: is the sensor in the anemometer analog and can be replaced, or are you using the temp
output and fudging a solar value from it? I’d be interested in hearing what you are doing with that.
You’re right, Niko. I should have said “end of this project as originally planned”. I
could go ahead and build a “solar in a jar” around the I2C sensor and may do that.
