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Barrow4491
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Weather Station: Melton Hill North Ward
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#1

07-12-2017, 06:20
(This post was last modified: 07-12-2017, 07:02 by Barrow4491.)
Werk,
I noticed today a later version? of build 7 and duly uploaded it. My sensor is initialising and last I looked it was up to read 102. Is there a problem as it seemed OK on the previous build.
Regards
JIm
PS
Reverted to previous build and same issue; ran serial monitor on CO2 and the result was "wrong reply from sensor"; disabled it in the config file and back in business without CO2 reading
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werk_ag
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#2

08-12-2017, 05:57
Hi Jim,


Can you please verify in your user configurable settings if the selected type of CO2 sensor is the right one for your sensor.

Code:
// --------------------------------------------------------------------------------------
//   CO2 (MH-Z19) Settings
//   Note: For outside use, the MH-Z19B model produces more accurate results
// --------------------------------------------------------------------------------------
#define Use_CO2         1    // 0= Not instaled, 1= Instaled
#define Z19_model       2    // 1= Model A, 2= Model B  (ATTENTION: Make sure you select the correct model)

Have you tried to power off and power on again the AQM ?
Bear in mind that the new software only starts to try to read the sensor after an initial period of 3 minutes, and getting "wrong reply from sensor" on the first attempt of reading it may be normal.

If the problem will persist, please post a copy of the serial monitor output, it may help.
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Barrow4491
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Posts: 314
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Joined: Mar 2016
Weather Station: Melton Hill North Ward
Country: Australia
#3

09-12-2017, 02:06
(08-12-2017, 05:57)Werk_AG Wrote:  Hi Jim,


Can you please verify in your user configurable settings if the selected type of CO2 sensor is the right one for your sensor.

Code:
// --------------------------------------------------------------------------------------
//   CO2 (MH-Z19) Settings
//   Note: For outside use, the MH-Z19B model produces more accurate results
// --------------------------------------------------------------------------------------
#define Use_CO2         1    // 0= Not instaled, 1= Instaled
#define Z19_model       2    // 1= Model A, 2= Model B  (ATTENTION: Make sure you select the correct model)  

Have you tried to power off and power on again the AQM ?
Bear in mind that the new software only starts to try to read the sensor after an initial period of 3 minutes, and getting "wrong reply from sensor" on the first attempt of reading it may be normal.

If the problem will persist, please post a copy of the serial monitor output, it may help.
Werk,
The config file is correct, I have model A and have powered it down many times to no avail.
I have tried to copy the serial monitor output but with no success. Could you please explain how this is achieved
Regards
Jim
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uncle_bob
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#4

09-12-2017, 05:47
Quote:Could you please explain how this is achieved
Regards
Jim

Hi Jim, not Werk here but, you just highlight all the text and hit Ctrl +C to copy it, then paste it as usual.
Conder, Canberra Weather

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Barrow4491
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#5

10-12-2017, 06:48
(09-12-2017, 05:47)uncle_bob Wrote:  
Quote:Could you please explain how this is achieved
Regards
Jim

Hi Jim, not Werk here but, you just highlight all the text and hit Ctrl +C to copy it, then paste it as usual.
Werk,
Below is the code from the serial monitor of the CO2 sensor; every time it does a read it returns an error.
I will replace it when the new one arrives.
Do you have a link to the B model? as all i can find is the A type
Regards
Jim
  
Code:
    WeatherDuino 4Pro
Air Quality Monitor v7.00 b007

E8,74,34,0,80,1D,0,29,0,
Calculated crc: 92
Wrong reply from CO2 sensor!
16,98,4,1,80,A6,20,9,0,
Calculated crc: 14
Wrong reply from CO2 sensor!
11,2E,4,0,80,2E,2,9,0,
Calculated crc: 15
Wrong reply from CO2 sensor!
72,58,4,1,80,96,0,9,0,
Calculated crc: 84
Wrong reply from CO2 sensor!
9E,84,9E,84,4,0,80,A1,2,
Calculated crc: 35
Wrong reply from CO2 sensor!
3,6C,CA,30,2,D3,0,0,0,
Calculated crc: C5
Wrong reply from CO2 sensor!
FF,DC,F2,74,4,0,80,9D,35,
Calculated crc: 9D
Wrong reply from CO2 sensor!
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hornychz
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#6

10-12-2017, 08:29
(10-12-2017, 06:48)Barrow4491 Wrote:  Do you have a link to the B model? as all i can find is the A type
Jim

Hi Jim,

for example:

https://www.ebay.com/itm/MH-Z19B-Infrare...2749.l2649
Best Regards
Zdenek

Brandys/L Weather
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Barrow4491
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Posts: 314
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Joined: Mar 2016
Weather Station: Melton Hill North Ward
Country: Australia
#7

10-12-2017, 10:00
(10-12-2017, 08:29)hornychz Wrote:  
(10-12-2017, 06:48)Barrow4491 Wrote:  Do you have a link to the B model? as all i can find is the A type
Jim

Hi Jim,

for example:

https://www.ebay.com/itm/MH-Z19B-Infrare...2749.l2649
Zdenek,
Thanks for the link I will get one ordered.
Regards
Jim
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werk_ag
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#8

10-12-2017, 20:18
(10-12-2017, 06:48)Barrow4491 Wrote:  Werk,
Below is the code from the serial monitor of the CO2 sensor; every time it does a read it returns an error.
...

Hi Jim,

Sorry for the late reply.
Usually a read error is caused by problems with the serial connection to the sensor.
If you want you can try the attached MH-Z19 test software. It tries to read the MH-Z19 at each 8 seconds, and outputs data to the LCD and the Serial Monitor.
There is no need to do any configuration, it works with models A and B.


Attached Files
.rar MH-Z19_test_8secReadings.rar Size: 1,69 KB  Downloads: 228
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Barrow4491
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Posts: 314
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Weather Station: Melton Hill North Ward
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#9

10-12-2017, 23:48
(10-12-2017, 20:18)Werk_AG Wrote:  
(10-12-2017, 06:48)Barrow4491 Wrote:  Werk,
Below is the code from the serial monitor of the CO2 sensor; every time it does a read it returns an error.
...

Hi Jim,

Sorry for the late reply.
Usually a read error is caused by problems with the serial connection to the sensor.
If you want you can try the attached MH-Z19 test software. It tries to read the MH-Z19 at each 8 seconds, and outputs data to the LCD and the Serial Monitor.
There is no need to do any configuration, it works with models A and B.
Werk,
I downloaded and ran the test and below is the result; as you can see it appears to have come good after an initial error read???
 I have reloaded the software and it appears OK at the moment and i will leave it run and let you know the results
Regards
Jim

Code:
21,10,1C,FC,5,6C,11,3,24,
Calculated crc: 53
Wrong reply from CO2 sensor!

FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


Sensor Operational

FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,1,9A,45,0,0,0,9A,
Calculated crc: 9A
CO2 read: 410 - Temp: 29 - Stabile: 0


FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,2,1F,46,0,0,0,13,
Calculated crc: 13
CO2 read: 543 - Temp: 30 - Stabile: 0


FF,86,2,1C,46,0,0,0,16,
Calculated crc: 16
CO2 read: 540 - Temp: 30 - Stabile: 0


FF,86,2,28,46,0,0,0,A,
Calculated crc: A
CO2 read: 552 - Temp: 30 - Stabile: 0


FF,86,2,2F,46,0,0,0,3,
Calculated crc: 3
CO2 read: 559 - Temp: 30 - Stabile: 0


FF,86,2,33,45,0,0,0,0,
Calculated crc: 0
CO2 read: 563 - Temp: 29 - Stabile: 0

21,10,1C,FC,5,6C,11,3,24,
Calculated crc: 53
Wrong reply from CO2 sensor!

FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


Sensor Operational

FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,1,9A,45,0,0,0,9A,
Calculated crc: 9A
CO2 read: 410 - Temp: 29 - Stabile: 0


FF,86,1,9A,46,0,0,0,99,
Calculated crc: 99
CO2 read: 410 - Temp: 30 - Stabile: 0


FF,86,2,1F,46,0,0,0,13,
Calculated crc: 13
CO2 read: 543 - Temp: 30 - Stabile: 0


FF,86,2,1C,46,0,0,0,16,
Calculated crc: 16
CO2 read: 540 - Temp: 30 - Stabile: 0


FF,86,2,28,46,0,0,0,A,
Calculated crc: A
CO2 read: 552 - Temp: 30 - Stabile: 0


FF,86,2,2F,46,0,0,0,3,
Calculated crc: 3
CO2 read: 559 - Temp: 30 - Stabile: 0


FF,86,2,33,45,0,0,0,0,
Calculated crc: 0
CO2 read: 563 - Temp: 29 - Stabile: 0
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werk_ag
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Posts: 5.411
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#10

10-12-2017, 23:57
(10-12-2017, 23:48)Barrow4491 Wrote:  ... as you can see it appears to have come good after an initial error read???
 I have reloaded the software and it appears OK at the moment and i will leave it run and let you know the results

As said before, the first or second initial reads always gives a CRC error, which leads to get "Wrong reply from CO2 sensor!"
Is good to know that your back in business again. Smile
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