Let me get this straight. The order of power for the ISS...
1. solar panel...excess goes toward the supercap
2. supercap
3. 3V CR123 battery
Now if I use the 5VDC adapter will the ISS try running off of the solar and drain the supercap first? Is the supercap even being used once the external 5V is plugged in? Can the supercap be causing some kind of electrical interference? Maybe the supercap is simply just bad? I'm contemplating snipping the supercap right off and to force the ISS to only run on the external power and battery backup.
Answering your questions in order:
Yes, that's an approximately correct and approximately complete description of "order of power".
No.
Not if all the circuitry is working correctly.
No.
Perhaps.
That would be the next diagnostic thing to try.
However, given what you have done already, I suspect that the power circuitry (diodes) on the ISS board is not working correctly. Or.....
I can't tell from this discussion exactly how the 12v anemometer power relates to the ISS power circuitry. But I speculate that there's some cross-relationship. It's even possible that connecting the new anemometer has "blown" something (perhaps a diode or perhaps the supercap) on the ISS board.
One way to test would be to disconnect the new anemometer and connect the Davis anemometer and see what happens (day, night, with 5v power, etc.).
Dear All,
This is Stefan from HONGYUV, I upload principle of Davis anemometer and wind vane for your info.
Anemometer: a passive switch signal source powered by ISS(3V)
Wind vane: a digital potentiometer source output 0-3VDC correspond to 0-359°
There is no way that our ultrasonic anemometer will damage ISS.
We've got our wireless VP2 and we are now trying to recur same malfunction, but temporarily without any result yet.
Theorectically speaking, considering Davis anemometer and wind vane is commonly used, there should be no difference between cabled and wireless VP2 concerning data collection on them.
I also uploaded a spray testing video on our WDS series products, from which we can eliminate potential suspect on its water-proof performance.
In this testing, no malfunction was found.
I didn't check this forum out frequently but I surely will post new test result here later.