Forum Replies Created

Log In Register Lost Password
Viewing 15 posts - 271 through 285 (of 774 total)
1 2 3 … 18 19 20 … 50 51 52
  • Author
    Posts
  • January 9, 2018 at 9:58 pm in reply to: A3 Wifi connection #5481
    uRADMonitor
    Keymaster

    Great to see this working! You can use http://uradmonitor.com/?open=8200009C or the new beta dashboard https://uradmonitor.com/tools/dashboard-04/?open=8200009C

    January 9, 2018 at 6:02 pm in reply to: co2 sensor ? #5477
    uRADMonitor
    Keymaster

    Switching the autocalibration off and automatic calibration every month at a quit moment ?

    That’s a very good idea!

    January 9, 2018 at 5:59 pm in reply to: Jumps in measured data #5476
    uRADMonitor
    Keymaster

    I’ve provided more details on email, please check it. But for the continuity of the topic, the bug becomes apparent when you decode the “converted” values. Please add the decoding function:

    double int2double(uint16_t val) {
	int8_t d = (val >> 8) & 0xFF;
	int8_t i = (val & 0xFF) - 127;
	if (i < 0) d *= -1;
	return i + d / 100.0;
}

    The if (i < 0) d *= -1; won't trigger when i is 0. The problem with this algorithm is that we have no way of knowing the sign, when the integer byte is 0. Exactly the bug you have spotted. Try this code to the "converted" values, and check the more details I sent on your email. I tried to see if this is fixable on the server side, but apparently information is lost on the conversion. A new encoding scheme has been added to the firmware. We will need to install this new firmware on all affected units.

    January 9, 2018 at 2:36 pm in reply to: Jumps in measured data #5473
    uRADMonitor
    Keymaster

    Thanks to your findings, I was able to identify a bug in the temperature encoding scheme:

    uint16_t double2int(double val) {
	int8_t sintp = (int8_t)val;				//signed integer part
	int8_t sdecp = (val - sintp ) * 100;	//signed decimal part
	uint8_t udecp = sdecp>0?sdecp:-1*sdecp; //removed decimal sign
	uint8_t uintp = sintp + 127;			//convert to unsigned
	uint16_t res = (udecp << 8) | (uint16_t)uintp;		//pack it together
	return res;
}

    The sign is lost when the integer part is 0, exactly all values between 0 and -1. The fix is added to the firmware as we speak, unless it can be solved on the server side.

    For CO2, let’s continue herE: https://www.uradmonitor.com/topic/co2-sensor/

    January 9, 2018 at 2:09 pm in reply to: co2 sensor ? #5471
    uRADMonitor
    Keymaster

    The readings across December. I was able to identify a single “jump”. Please confirm. We can have the auto-calibration disabled, but I don’t think it’s a good idea. All tests on these sensors have shown good correspondence to the reference unit. I’m concerned that disabling auto-calibration will induce a building offset over time.

    Attachments:

    1. Screen-Shot-2018-01-08-at-19.56.17.png

    January 8, 2018 at 5:50 pm in reply to: uRADMonitor A3 and PM1, PM10 sensors according to API #5465
    uRADMonitor
    Keymaster

    The PM2.5 data is originally generated by the A3, which is then used to extrapolate the PM1.0 / PM10.0 via a linear model, which you probably saw already due to the common chart shapes. There’s a lot of literature covering this topic, and more transformation models. So we might see changes to these calculations in the future.

    January 2, 2018 at 6:57 pm in reply to: Change Flag in Map #5460
    uRADMonitor
    Keymaster

    Done! Happy New year!

    December 31, 2017 at 4:35 pm in reply to: Unit offline #5458
    uRADMonitor
    Keymaster

    Sounds good, let me know when you get the usbAsp , I will assist you further.

    December 31, 2017 at 4:34 pm in reply to: No Formaldehyde or noise being reported #5457
    uRADMonitor
    Keymaster

    Your unit doesn’t have a noise sensor as I recall. This feature is being added to current A3 design, but it is still experimental.

    For the CH2O, please try to approach some ethyl alcohol close to the unit, so some of the vapour would be sucked inside the detector, to see if it triggers a response.

    December 31, 2017 at 4:29 pm in reply to: Change Flag in Map #5456
    uRADMonitor
    Keymaster

    Done! Thanks, Radu

    December 31, 2017 at 4:28 pm in reply to: Dashboard as seen on EEVBlog Mailbag #5455
    uRADMonitor
    Keymaster

    Sure, please use:
    http://www.uradmonitor.com/tools/dashboard-04/?open=11000084

    respectively,
    http://www.uradmonitor.com/tools/dashboard-04/?open=82000074

    Please note this is in BETA.

    Happy New Year!

    December 30, 2017 at 1:33 pm in reply to: Unit is showing offline [SOLVED] #5448
    uRADMonitor
    Keymaster

    Solved, the LoRaWAN callback is not configured: https://uradmonitor.com/tools/dashboard-04/?open=14000011

    December 30, 2017 at 1:32 pm in reply to: Unit offline #5447
    uRADMonitor
    Keymaster

    Would you like to upgrade the firmware? This will probably improve things. It’s easy: https://www.uradmonitor.com/firmware-upgrade-guide/

    December 28, 2017 at 7:15 pm in reply to: Noise sensor on A3 model #5438
    uRADMonitor
    Keymaster

    Hi Pat, newer iterations have a sound/noise sensor, but it is still in testing, so I would call it experimental. Your unit is HW103 and doesn’t have it, this is why you are seeing zeros.

    December 28, 2017 at 7:12 pm in reply to: Unit offline #5437
    uRADMonitor
    Keymaster

    Neither do I , if port 80 is open this shows the firmware is working (the TCP/IP stack is fairly complex by itself).

  • Author
    Posts
Log In Register Lost Password
Viewing 15 posts - 271 through 285 (of 774 total)
1 2 3 … 18 19 20 … 50 51 52