watterott / co2-ampel Goto Github PK

I noticed that there is an unpopulated component, J2, next to the Qwiic connector J4 on the v1.1 board. Is there any information about what was supposed to be there?

The last firmware releases on https://learn.watterott.com/breakouts/co2-ampel/firmware/ don't have "without buzzer" versions. Could you provide such versions, please?

Thank you.

This repo seems to be about the hardware / firmware, so it's not clear if issues relating to docs at https://learn.watterott.com/breakouts/co2-ampel/ should be part of the perimeter.

Could you clarify ?

IMHO, it would be great to have the docs inside the same GitHub project (or another one ?), so that one can report issue, contribute etc. instead of having them on a separate site.

Hello,

the firmware v7 displays a CO2 ppm value of ca. 220 ppm in a well ventilated office. This is not plausible as fresh air has about 400 ppm CO2.
Doing the check outside, the ppm value drops to zero.

This looks like a wrong calibration to me. According to the readme, doing a calibration usually is not required.

https://learn.watterott.com/breakouts/co2-ampel/getting-started/#update-instructions isn't clear on what's needed for updating the firmware.

I seem to have managed to update by just copying the "co2_covid_v10.bin" file into /media/.../CO2AMPEL/ with a file manager on Linux, without the need to use dd (which actually reports an error on a non existant file)

Also, as there's no APP.BIN file to be downloaded so maybe it would be more realistic to provide something like :

cp co2_covid_vNN.bin /media/CO2AMPEL/ 

or I don't understand the naming scheme at stake (not clear what the existing CURRENT.BIN file is, once the USB mass storage appears)

Thanks in advance

We bought this sensor to messure CO2 in our office, unfortunately the Wifi connection crashes frequently.
We think it would help I we would have the possibility to enter a fix IP.

Would it be possible to provide (in this repo ?) a basic shell script that could be generic enough to work on most Linux distros, to read sensor values over /dev/ttyACM0 (serial USB) ?

The docs in https://learn.watterott.com/breakouts/co2-ampel/getting-started/#serial-interface-usb point to the HTerm program, with a nice GUI etc. but for simple testing, I guess some stty / screen and such could be widely available on Linux boxes.

Thanks in advance.

[Feature Request]

hallo, wir verwenden einige CO2-Ampeln und funktioniert sehr gut.
Wir möchten diese auch im Hochschulkontext einsetzen. Lufthygiene in Hörsälen zB.
Dort gibt es aber kein klassisches WPA2, sondern nur WPA2 Enterprise (eduroam), also mit zusätzlichem Benutzer und Passwort zur Verbindung mit dem WLAN.

Es wäre fantastisch, wenn diese Funktionalität noch eingebaut werden könnte.
Das würde auch dafür sorgen, dass noch mehr dieser Geräte bei Ihnen eingekauft werden.

Describe the bug
The installation of the following command fails because of checksum error.

arduino-cli core install co2ampel:samd

Error:

Error during install: Cannot install platform: installing platform co2ampel:[email protected]: testing local archive integrity: testing archive checksum: missing checksum for: co2ampel-samd-1.0.7.zip

Expected behavior
The installation of the co2ampel:samd is successful

Additional context
The file https://github.com/watterott/CO2-Ampel/blob/master/package_co2ampel_index.json is missing the checksum like in https://boardsmanager.com/package_move38.com-blinks_index.json

Is there a known issue (undocumented ?) on standard device which could become silent over serial ?

I seem to had proper serial config with cutecom and /dev/ttyACM0 (9600, 8-N1 etc.) but couldn't detect anything on the serial line. Leds were working fine (supposedly, changing to green when getting fresh air, etc.)

After I flashed the v11 firmware, it suddenly started to report sensor values.

Also I couldn't figure out how to detect which version of firmware was running initially as shipped from the store... but that's probably another issue ;-)

I have tested the co2_covid_v11.bin firmware from
https://learn.watterott.com/breakouts/co2-ampel/getting-started/co2_covid_v11.bin and values reported over the USB serial port (and light colors) seem to be varying to erratically, on my v1.1 standard version.

Firmware co2_covid_v10.bin seems more reliable (smoother evolution of CO2 level).

Maybe this is known : "could cause freezing of standard version on startup (since v5)" seems to indicate a problem with the standard version... or I misunderstand the meaning of that notice : not clear if it applies to the prior versions (bug fixed), or is a known issue with that update... proper changelog/release notes would help (maybe not in the getting started page, but couldn't find more docs...)

Thanks in advance.

In unserem Unternehmen nutzen wir einige CO2-Ampeln für die Überwachung der Luftqualität (wofür sonst...). Leider haben wir festgestellt, dass das Lüftungsverhalten gerade so ist, dass die Schotten wieder dicht gemacht werden, wenn die Ampel gerade so wieder grün ist (oder die Email mit "WARN -> OK" kommt). Für das Checkmk-Plugin bin ich daher dabei, einen Hysteresefaktor als festen Prozentsatz einstellbar zu machen.

D.h., wenn der Übergang OK -> WARN bei Überschreiten von 1000ppm stattfindet und ein Hysteresefaktor von 10% eingestellt ist, findet der Übergang von WARN -> OK erst statt, wenn 900ppm unterschritten werden.

Wenn Ihr daran interessiert seid, den Code für die Hysterese zu übernehmen, werde ich den Code entsprechend sauber strukturieren und gut kommentieren und dann als Pull-Request einreichen. Wäre das in Eurem Interesse?

Liebe Grüße
Mattias