@sdl here - is there a known method to speed up interrupts on the PI zero? Or - which Raspberry PI did you guys use when developing the SkyWeather kit?
We had storm here and I know that we had windspeeds reaching 170Km/h, yet my weatherstation tops at 60Km/h...
According to the linpack Benchmark (Designed to highlight a real-world bottleneck, the Python GPIO benchmark switches a single pin on and off while a frequency counter measures how quickly the pin is toggled. The faster a Pi’s processor, the faster the pin can be toggled before the processor hits its limit) it seems the PI4 would be the best bet.
Note that the raspberry PI Zero W I use can poll the GPIO 63times according to this graph - which coincides strongly with the 60Km/h speed it maxes out.
@frenchi - did you underclock yours? IMHO, that should be usable even at half speed. I may check it out when I service my setup the next time.
To Anyone: have a Raspberry PI 2 with the skyweather? Any issues with the Wind speed measurements?
Don't want to use a PI 4 for a weatherstation (way overkill). I don't want to take the PI 3 as that one is known to become very hot. And The 4 - well, it is overkill at best.
I'll probably go for the skyweather 2 as I have a house in the south I'd like to connect. This will not fix the issue of my current station. I'll eventually grab one of the new Raspberry PI Zero W 2 that just came out and put it in. New CPU (4cores) and faster. That should do it
So - just to confirm that the PI Zero 2 W works. It requires a full update to the underlying OS though, or else it will not find the WiFi drivers. Just make sure you do not remove the python 2 libraries, and it runs smooth.
Now - I'll have to wait for the next Storm to see if it can gather the data fast enough to show wind-speed higher than 60Km/h.
PS: The Raspberry PI Zero 2 W is about 4 times faster than the PI Zero 1, has 4 cores which are running also faster (1Ghz) than the single-core (700Mhz) on the PI Zero. And according to tests I had seen somewhere on the net, the GPIO poll speed has increased by a factor of 5 (which made me actually go for it). So my hopes are high.
What do you call power-date? It is up and running since Friday 12th 2021 - www.solsys.org/mod.php?mod=weather I have actually added a link to the timelapse video. It will show the video form the day before. I keep the old videos too, but will not provide a UI to choose from.
Regarding power-requirement, I have no UPS connected to it.