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  • December 30, 2018 at 2:53 pm in reply to: A3 CO2 Sensor Mh-Z19B #6346
    Radu
    Keymaster

    Thank you Michel for the valuable input.

    December 30, 2018 at 2:51 pm in reply to: Several nuclear accidents this Autumn after hurricanes #6344
    Radu
    Keymaster

    Thank you for these articles!

    December 30, 2018 at 2:49 pm in reply to: System beep #6343
    Radu
    Keymaster

    Hi Arne . I just configured it. Please check.

    December 4, 2018 at 10:15 pm in reply to: Beeping? what is it? #6304
    Radu
    Keymaster

    How many beeps do you hear? Each sequence represents something else. The good news is newer units have a USB port that amongst other features will offer the “one click to upgrade” feature. But everything takes time.

    December 4, 2018 at 10:12 pm in reply to: LND7807 noise problem. #6303
    Radu
    Keymaster

    @r_a_ghosh, would you post a few pics too?

    December 3, 2018 at 4:33 pm in reply to: disabling the buzzer / notification and alarm settings #6301
    Radu
    Keymaster

    Thank you for your support,

    Radu

    December 2, 2018 at 6:28 pm in reply to: Model A3 Wifi password length #6298
    Radu
    Keymaster

    Yes, the memory is limited on these devices, a big array to hold a long password can be problematic.

    December 2, 2018 at 6:27 pm in reply to: disabling the buzzer / notification and alarm settings #6297
    Radu
    Keymaster

    Soon, more settings will be added.

    December 2, 2018 at 6:22 pm in reply to: System beep #6296
    Radu
    Keymaster

    Done

    November 29, 2018 at 4:56 pm in reply to: Unit 8200007C high radiation #6291
    Radu
    Keymaster

    Hello Luc,

    I can only think of some excess condensation taking place. Do you have access to the unit to check how it stands?

    Other than that, it can also be a tube failure, in which case I will need to service your unit.

    Thanks,
    Radu

    November 28, 2018 at 9:20 pm in reply to: A3 Ozone flat line (almost) #6290
    Radu
    Keymaster

    I continued the discussions with the sensor manufacturer. Here are some additional details:

    If the ambient ozone gas concentration is less than 200ppb then the sensors will have no value change.

    That is what we get when we see constant values that are just being repeated, usually the 50ppb line.

    its detection range is 200ppb–10ppm normally

    What this means is we cannot see the fine fluctuations in normal environmental conditions, instead the sensor will react to higher values only.

    if the ozone concentration is less than 200ppb the sensor cannot read it

    November 25, 2018 at 6:01 pm in reply to: Model A3 Wifi password length #6288
    Radu
    Keymaster

    Your router password is too long, stock firmware takes only 20characters max. Please use a shorter password.

    November 18, 2018 at 11:30 pm in reply to: Beeping? what is it? #6286
    Radu
    Keymaster

    Unit set to mute, however you might need to do a firmware update too. First, let me know if the beeps stopped or not.

    November 10, 2018 at 4:54 pm in reply to: A3 – Stability and WIFI issue #6281
    Radu
    Keymaster

    Hi Matthias,

    To prevent reboots, try to provide a stronger Wifi signal for the unit to connect to.

    The default hotspot is left on intentionally, so you can re-configure it anytime you need. But I get your point. Two fixes here:
    – on newer firmware, the configuration screen doesn’t show the password in clear text
    – on a firmware variant you can choose an option to disable the internal hotspot, a few seconds after reboot. So it gives you the chance to reconfigure it when needed, then the hotspot is turn off.

    Both would require a firmware update. Not complicated at all. Interested in going this route?

    November 6, 2018 at 8:58 pm in reply to: Beeping? what is it? #6278
    Radu
    Keymaster

    Hi @arnljot, how is the unit now?

    I see it has a high uptime, so no recent resets, Uptime: 166741s

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