Greetings
Success at last!
But of course I have two questions?
It averages 5 minutes of data sampled every second, i.e. 300 samples and writes them to the end of the file for the day every 5 minutes. It creates a new file very day, so no, it doesnât overwrite old readings. The files are in the data folder and they are in JSON format.
A dayâs worth of data is about 62K, so about 22MB per year, so after about 136 years it will fill the SD card!
If you change the port to 80, it simply means you can drop the :5000 suffix from the web address as browsers default to port 80. To change it you need to change this line: https://github.com/nophead/EnviroPlusWeb/blob/master/app.py#L196 and then start it with sudo python3 app.py.
I donât know why you would need VNC. That is a remote desktop viewer but you only need a web browser to see the page from any device on your local network.
Greetings
Ok on data saving, that should work fine for me.
How would I look at past JSON data files ?
Fine on - changing the port to 80, I understand that now.
I will mostly babies the data/graph locally but I want to experiment and occasionally view graph remotely- so would VNC work for that purpose or do suggest something else
Again thank you so much for a for a great program, looks like you have good python program skills, way better than myself.
Thanks
Tom
Currently you can only see the past by going to bigger time spans, i.e. week, month, year. Each one averages more data points to keep the number of graph points around 300. Week is half hour resolution, month is two hour and year one day.
I might add an option to scroll backwards eventually but I am currently working on designing a 3D printed case.
I donâr run a desktop on my RPI0, so VNC would not work for me. Are you viewing the page on a browser running on the RPI?
To view it on another machine on the same network you just need to use a browser. For example I can view it on my phone or PC with Chrome.
Greetings
Ok on the recording graph time and graph history.
Yes, currently using the web browser on RPI to view the graph, so I figured that VNC might work to see screen remotely.
I was wondering how you would view past recorded data as you mentioned they are saved using JSON.
Thanks
Tom
When the program starts it reads all the past data so that it can do the year view. Obviously I havenât tested that for more than a few days. The data in memory should be a lot smaller than the JSON file representation, so I donât think it will be a problem for many years.
Yes you could use VNC to view a local browser remotely bit it is a lot easier and more efficient to just use a remote browser.
Greetings
Hoping to experiment with Enviroplus project more this upcoming weekend, when Some free time.
Thanks again
Tom
Greetings
Have been viewing/observing data using your enviro + program with very interesting results.
I am both intrigued and disturbed by data observations.
2 Have observed some interesting âparticleâ spikes which I cannot seem to correlate to any events, where all particle numbers âspikeâ around midnight?? Furnace had not turned on yet, so kind of puzzling.
Tom
To get temperature correct I had to mount the board at right angles and have a small fan blowing on the back of it. Humidity is relative to temperate so getting the temperature correct causes it to rise. I did that rather than use an offset because the offset doesnât correct the humidity reading.
It is still about 5% lower than two other hygrometers I have but I donât know how accurate they are.
Most of my particle peaks can be explained by cooking or bed making. I did have one sharp rise at midnight on Thursday that I canât explain. We did cook 7 moussakas earlier in the evening and that did give a huge NO2 spike but the particle peak was about two hours later.
Greetings
This is my current test setup. I need to design a 3D printed case for it.
Another dashboard for a enviroplus - using a tiny bit of Ruby, writing to a influxdb database and the using Grafana to create the dashboard. All open source stuff running in the house.
Letâs see if I managed to get the screenshot uploaded (-;
Hey Guys,
This looks amazing but what are the install requirements?
Iâve installed Flask with pip3 install Flask but I get this error:
:~/EnviroPlusWeb $ sudo python3 app.py
Traceback (most recent call last):
File "app.py", line 27, in <module>
from enviroplus import gas
File "/usr/local/lib/python3.7/dist-packages/enviroplus-0.0.1-py3.7.egg/enviroplus/gas.py", line 6, in <module>
ModuleNotFoundError: No module named 'RPi'
Iâve installed python2 Flask but I get this error when I run python app.py and no webserver on :5000
('Particle read failed:', 'ReadTimeoutError')
The latest code on GitHub runs on port 80, i.e. the default for http.
Does the Pimoroni particle demo work?
No Iâm not, good point :/
pi@RaspberryPiEnviro:~/enviroplus-python/examples $ sudo python particulates.py
2019-10-15 09:09:37.360 INFO particulates.py - Print readings from the PMS5003 particulate sensor.
Press Ctrl+C to exit!
Should I be using âpythonâ or âpython3â :) ?
I use Python3, Python2 is EOL in Jan 2020, https://pythonclock.org/
You shouldnât need sudo to run the examples. It is just needed to start the app if it is on port 80 as mere users are not allowed to take over that port.
OK, no worries.
So Iâve fixed the python3 issue with installing python3-dev python3-rpi.gpio.
Iâm still not seeing the webserver:
~/EnviroPlusWeb $ python3 app.py
Particle read failed: ReadTimeoutError
Particle read failed: ReadTimeoutError
Particle read failed: ReadTimeoutError
Particle read failed: ReadTimeoutError
Particle read failed: ReadTimeoutError
Particle read failed: ReadTimeoutError
pi@RaspberryPiEnviro:~/EnviroPlusWeb $ sudo netstat -tulpn | grep :80
pi@RaspberryPiEnviro:~/EnviroPlusWeb $
I assume the reason it is not initializing web server is that it is failing on Particle Read.
Do you have any additional attachments of just the EnviroPlus Board?
Should the particulates.py from examples work of the box?
You need the separate plug in module https://shop.pimoroni.com/products/pms5003-particulate-matter-sensor-with-cable to measure particles.
ahh i see thank you, sorry about that.
I assume i should be able to cut out that part of the app.py to skip it?
Yes you could hack out the reading of it from app.py.
If you are not planning to get one remove the entries from the record and also remove the display here: https://github.com/nophead/EnviroPlusWeb/blob/master/templates/readings.html#L10 and the graphing here: https://github.com/nophead/EnviroPlusWeb/blob/master/templates/index.html#L77.
If you are planning to get one in the future then write zeros to the record and keep the display stuff in place.