vfilimonov / co2meter Goto Github PK

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A Python library for USB CO2 meter

License: MIT License

Python 91.63% HTML 6.41% Makefile 1.96%

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Decoding co2sensor data

You mentioned difficulty interpreting the data from the mini usb. The manufacturer provided me with the following link to interpret the data: http://co2meters.com/Documentation/Other/AN_RAD_0301_USB_Communications_Revised8.pdf

Getting warnings because pandas frame.append method is deprecated

I am getting warning messages from the monitoring since the code is using the frame.append method, which is deprecated.

/home/pi/.local/lib/python3.9/site-packages/co2meter/co2meter.py:310: FutureWarning: The frame.append method is deprecated and will be removed from pandas in a future version. Use pandas.concat instead.

co2meter_server: command not found

Thank you for creating such a great library.

I have set up this library and successfully got data for CO2 and temperature as follows:

pi@raspberrypi:~ $ python
Python 3.9.2 (default, Mar 12 2021, 04:06:34) 
[GCC 10.2.1 20210110] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import co2meter as co2
>>> mon = co2.CO2monitor(bypass_decrypt=True)
>>> mon.info
{'vendor_id': 1241, 'product_id': 41042, 'path': b'1-1:1.0', 'manufacturer': 'Holtek', 'product_name': 'USB-zyTemp', 'serial_no': '2.00'}
>>> mon.read_data()
(datetime.datetime(2022, 1, 2, 0, 7, 54), 873, 20.100000000000023)

Now I am trying to run the web-server and facing error.

pi@raspberrypi:~ $ co2meter_server
-bash: co2meter_server: command not found

I believe that I have installed the necessary dependecies as shown below. Could you please tell me how to solve this?

pi@raspberrypi:~ $ pip3 list
Package         Version
--------------- ------------
certifi         2020.6.20
chardet         4.0.0
click           8.0.3
CO2meter        0.2.6
colorzero       1.1
distro          1.5.0
Flask           2.0.2
future          0.18.2
gpiozero        1.6.2
hidapi          0.11.0.post2
idna            2.10
itsdangerous    2.0.1
Jinja2          3.0.3
MarkupSafe      2.0.1
numpy           1.22.0
pandas          1.3.5
pip             20.3.4
python-apt      2.2.1
python-dateutil 2.8.2
pytz            2021.3
requests        2.25.1
RPi.GPIO        0.7.0
setuptools      52.0.0
six             1.16.0
spidev          3.5
ssh-import-id   5.10
urllib3         1.26.5
Werkzeug        2.0.2
wheel           0.34.2

Raspberry Pi: does not work under user account

Module does not work under default user pi in raspberry py, only under root.

Despite setting permissions in /etc/udev/rules.d98-co2mon.rules:

KERNEL=="hidraw*", ATTRS{idVendor}=="04d9", ATTRS{idProduct}=="a052", GROUP="plugdev", MODE="0666"

and the fact that device is visible in hid.enumerate():

(system3) pi@raspberrypi:~ $ python -c "import hid; print(hid.enumerate())"
[{'product_id': 41042, 'usage_page': 0, 'interface_number': 0, 'product_string': '', 'serial_number': '', 'vendor_id': 1241, 'manufacturer_string': '', 'path': b'0001:0005:00', 'usage': 0, 'release_number': 256}]

it does not work when trying to open it:

(system3) pi@raspberrypi:~ $ python -c "import hid; h = hid.device(); h.open(0x04d9, 0xa052)"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "hid.pyx", line 66, in hid.device.open
OSError: open failed

Most likely, some permissions are not set.

Issue on the hidapi repo: trezor/cython-hidapi#47

Dependency on libudev-dev

Thank you for the work on this project. It is running successfully on my Raspberry Pi on Debian Jessie (Linux).

However, to get it to work, I had to install an additional dependency not mentioned in your documentation. The pip install of hidapi failed due to not being able to link to the udev library.
I corrected that by installing Linux package libudev-dev:

apt-get install libudev-dev

Not sure if you would like to add that information to your README.md, but it may help others.

Kind regards.

Can you clarify what devices are compatible?

I just found this fantastic project. Great work. I would love to use it with my Raspberry Pi at home.

However, from the README I am unclear as to what meters are compatible. Is this repository tailored to devices from the brand CO2meter.com or something?

Maybe you can loose a word or two in the README. Thanks!

dmesg log flooding

Hello,

First of all thank you for such nice software!

I've been using co2meter (0.2.5 from pip) with flask server option on my two PCs running Ubuntu 20.04
It seems that every request for co2 and temperature is followed by kernel message:

Dec 18 11:34:29 homie1 co2meter_server[30179]: INFO:root:[2021-12-18 11:34:29] 510 ppm, 23.8 deg C
Dec 18 11:34:29 homie1 kernel: hid-generic 0003:04D9:A052.00FA: hiddev0,hidraw0: USB HID v1.10 Device [Holtek USB-zyTemp] on usb-0000:00:1a.0-1.5/input0
Dec 18 11:35:01 homie1 co2meter_server[30179]: INFO:root:[2021-12-18 11:35:01] 507 ppm, 23.9 deg C
Dec 18 11:35:01 homie1 kernel: hid-generic 0003:04D9:A052.00FB: hiddev0,hidraw0: USB HID v1.10 Device [Holtek USB-zyTemp] on usb-0000:00:1a.0-1.5/input0
Dec 18 11:35:34 homie1 co2meter_server[30179]: INFO:root:[2021-12-18 11:35:34] 506 ppm, 23.9 deg C
Dec 18 11:35:34 homie1 kernel: hid-generic 0003:04D9:A052.00FC: hiddev0,hidraw0: USB HID v1.10 Device [Holtek USB-zyTemp] on usb-0000:00:1a.0-1.5/input0

so dmesg log looks like this:

[Sat Dec 18 11:35:01 2021] hid-generic 0003:04D9:A052.00FB: hiddev0,hidraw0: USB HID v1.10 Device [Holtek USB-zyTemp] on usb-0000:00:1a.0-1.5/input0
[Sat Dec 18 11:35:34 2021] hid-generic 0003:04D9:A052.00FC: hiddev0,hidraw0: USB HID v1.10 Device [Holtek USB-zyTemp] on usb-0000:00:1a.0-1.5/input0
[Sat Dec 18 11:36:06 2021] hid-generic 0003:04D9:A052.00FD: hiddev0,hidraw0: USB HID v1.10 Device [Holtek USB-zyTemp] on usb-0000:00:1a.0-1.5/input0
[Sat Dec 18 11:36:39 2021] hid-generic 0003:04D9:A052.00FE: hiddev0,hidraw0: USB HID v1.10 Device [Holtek USB-zyTemp] on usb-0000:00:1a.0-1.5/input0
[Sat Dec 18 11:37:11 2021] hid-generic 0003:04D9:A052.00FF: hiddev0,hidraw0: USB HID v1.10 Device [Holtek USB-zyTemp] on usb-0000:00:1a.0-1.5/input0
[Sat Dec 18 11:37:44 2021] hid-generic 0003:04D9:A052.0100: hiddev0,hidraw0: USB HID v1.10 Device [Holtek USB-zyTemp] on usb-0000:00:1a.0-1.5/input0

Is it possible to suppress these messages?

Figures for README.md

Internal Server Error

I modified server.py → " mon = co2.CO2monitor(bypass_decrypt=True) ", then it works.

I have followed the setup instructions, but when I could not access the CO2monitor dashboard as below.
Any help would be much appreciated.

pi@raspberrypi:~ $ co2meter_server -H 0.0.0.0 -P 1201

Serving Flask app 'co2meter.server' (lazy loading)
Environment: production
WARNING: This is a development server. Do not use it in a production deployment.
Use a production WSGI server instead.
Debug mode: off
WARNING:werkzeug: * Running on all addresses.
WARNING: This is a development server. Do not use it in a production deployment.
INFO:werkzeug: * Running on http://192.168.0.108:1201/ (Press CTRL+C to quit)
ERROR:co2meter.server:Exception on / [GET]
Traceback (most recent call last):
File "/home/pi/.local/lib/python3.7/site-packages/co2meter/server.py", line 61, in home
vals = list(mon._last_data)
AttributeError: 'CO2monitor' object has no attribute '_last_data'

Module without dependencies libusb-1.0-0-dev

Can you create module with PyUSB and without dependencies of libusb-1.0-0-dev?

Current zeroconf has error about adding string and float

  File "/usr/local/Cellar/python/3.7.7/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 926, in _bootstrap_inner
    self.run()
  File "/usr/local/Cellar/python/3.7.7/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.7/site-packages/co2meter/server.py", line 316, in init_homekit_target
    start_homekit(mon, host=host, port=port, monitoring=False, handle_sigint=False)
  File "/usr/local/lib/python3.7/site-packages/co2meter/homekit.py", line 145, in start_homekit
    driver.start()
  File "/usr/local/lib/python3.7/site-packages/pyhap/accessory_driver.py", line 472, in start
    self.advertiser.register_service(self.mdns_service_info)
  File "/usr/local/lib/python3.7/site-packages/zeroconf/__init__.py", line 2385, in register_service
    self._broadcast_service(info)
  File "/usr/local/lib/python3.7/site-packages/zeroconf/__init__.py", line 2419, in _broadcast_service
    info.server,
  File "/usr/local/lib/python3.7/site-packages/zeroconf/__init__.py", line 652, in __init__
    DNSRecord.__init__(self, name, type_, class_, ttl)
  File "/usr/local/lib/python3.7/site-packages/zeroconf/__init__.py", line 457, in __init__
    self._expiration_time = self.get_expiration_time(100)
  File "/usr/local/lib/python3.7/site-packages/zeroconf/__init__.py", line 484, in get_expiration_time
    return self.created + (percent * self.ttl * 10)
TypeError: unsupported operand type(s) for +: 'float' and 'str'

Reverting zeroconf to 0.23 remediated this. The issue was on both mac and ubuntu(rasp pi)

Update README.md: "start_server_homekit" changed to "co2meter_server_homekit"

Just a simple correction for README.md:
The readme file says the command for starting server and homekit integration is start_server_homekit but at least in the current version it is called co2meter_server_homekit.

TFA Dostmann AIRCO2NTROL Coach

For TFA Dostmann AIRCO2NTROL Coach version of co2meter I had to comment out the _decrypt(msg) in co2meter.py, i.e. this works:

def hid_read(self):
""" Read 8-byte string from HID device """
    return self._h.read(8)

Otherwise (None, None) is returned.

Here is the >>> mon.info

{'product_name': u'USB-zyTemp', 'vendor_id': 1241, 'serial_no': u'2.00', 'product_id': 41042, 'manufacturer': u'Holtek'}

where to buy it : USB CO2 meter?

Homekit broken on ipython 2.7 due to asyncio

The homekit compatibility is missing a dependency on asyncio:

co2meter_server_homekit -H 192.168.200.100 -P 8000 -N co2
Traceback (most recent call last):
  File "/usr/local/bin/co2meter_server_homekit", line 11, in <module>
    sys.exit(start_server_homekit())
  File "/usr/local/lib/python2.7/dist-packages/co2meter/co2meter.py", line 433, in start_server_homekit
    start()
  File "/usr/local/lib/python2.7/dist-packages/co2meter/server.py", line 342, in start_server_homekit
    from homekit import PORT
  File "/usr/local/lib/python2.7/dist-packages/co2meter/homekit.py", line 9, in <module>
    from pyhap.accessory_driver import AccessoryDriver
  File "/home/pi/.local/lib/python2.7/site-packages/pyhap/accessory_driver.py", line 24, in <module>
    import asyncio
ImportError: No module named asyncio

However, manually installing asyncio (sudo pip install asyncio) on a RPI3B+ also does not work:

co2meter_server_homekit -H 192.168.200.100 -P 8000 -N co2
Traceback (most recent call last):
  File "/usr/local/bin/co2meter_server_homekit", line 11, in <module>
    sys.exit(start_server_homekit())
  File "/usr/local/lib/python2.7/dist-packages/co2meter/co2meter.py", line 433, in start_server_homekit
    start()
  File "/usr/local/lib/python2.7/dist-packages/co2meter/server.py", line 342, in start_server_homekit
    from homekit import PORT
  File "/usr/local/lib/python2.7/dist-packages/co2meter/homekit.py", line 9, in <module>
    from pyhap.accessory_driver import AccessoryDriver
  File "/home/pi/.local/lib/python2.7/site-packages/pyhap/accessory_driver.py", line 24, in <module>
    import asyncio
  File "/usr/local/lib/python2.7/dist-packages/asyncio/__init__.py", line 9, in <module>
    from . import selectors
  File "/usr/local/lib/python2.7/dist-packages/asyncio/selectors.py", line 39
    "{!r}".format(fileobj)) from None
                               ^
SyntaxError: invalid syntax

There is probably no fix to this bug as the asyncio port on 2.7 is not maintained anymore: trollius project on github
Also, the trollius port is not a complete replacement and asyncio is Python 3.4+ only. So co2meter_homekit requires python3 to run.

Compilation of hidapi on Raspberry Pi

Note that hidapi is a cython package and cython is not installed by default on Raspbian Stretch Lite.
I'd suggest adding a note to README.md:

Note that hidapi requires cython (sudo apt-get install cython) to be installed, otherwise pip install hidapi will result in an error code 1 in gcc.

Such a short note would have saved me at least an hour of wondering why it worked on a macbook but not a Raspberry Pi 3 B+ and might help others as well.

Unable to add sensor to Apple HomeKit

Hello,

First of all thank you for such nice software!

I use a carbon dioxide monitor from a gadget. everything works fine with the local web server, but it is not possible to add it to the apple home kit. I'm doing everything according to your instructions, but I can't find the sensor in the "home" application in any way

IOError when trying to connect sensor to Raspberry Pi

After following the instructions to install required packages and changing the dev rules, the CO2monitor() functions throws an IOError as open failed. The command and error log can be seen as follows:

python -c "import co2meter as c; m=c.CO2monitor(); print(m.info)"

The error log is:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/co2meter/co2meter.py", line 95, in __init__
    with self.co2hid():
  File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/usr/local/lib/python2.7/dist-packages/co2meter/co2meter.py", line 144, in co2hid
    self.hid_open(send_magic_table=send_magic_table)
  File "/usr/local/lib/python2.7/dist-packages/co2meter/co2meter.py", line 114, in hid_open
    self._h.open(self._info['vendor_id'], self._info['product_id'])
  File "hid.pyx", line 66, in hid.device.open
IOError: open failed

AttributeError: 'module' object has no attribute 'windll'

I've tried using the package on El Capitan 10.11.4, and it fails during import:

>>> import co2meter as co2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/site-packages/co2meter/__init__.py", line 3, in <module>
    from co2meter import *
  File "/usr/local/lib/python2.7/site-packages/co2meter/co2meter.py", line 6, in <module>
    import hid
  File "/usr/local/lib/python2.7/site-packages/hid/__init__.py", line 24, in <module>
    hidapi = ctypes.windll.LoadLibrary('hidapi.dll')
AttributeError: 'module' object has no attribute 'windll'

bypass_decrypt option in co2meter_server

co2meter/co2meter/server.py

Line 264 in 8a2e12d

mon = co2.CO2monitor()

It may be useful to be able to set bypass_decrypt like below.

mon = co2.CO2monitor(bypass_decrypt=True)

Thank you for creating such a wonderful library.
It is very helpful.

No data is returned with read_data()

Hello,

I have followed the setup instructions for Windows, but when I try to follow the example, I get no data from the read_data() call.

import co2meter as co2
mon = co2.CO2monitor()
mon.info  # data is returned here
mon.read_data()  # this call waits forever and has no printout

Any ideas?

vfilimonov / co2meter Goto Github PK

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co2meter's Issues

I modified server.py → " mon = co2.CO2monitor(bypass_decrypt=True) ", then it works.

I have followed the setup instructions, but when I could not access the CO2monitor dashboard as below. Any help would be much appreciated.

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I have followed the setup instructions, but when I could not access the CO2monitor dashboard as below.
Any help would be much appreciated.