WeatherDuino Forum

(04-08-2018, 21:34)Steve1506 Wrote: [ -> ]Thanks for the reply what about the shield do you have a dimension for that

These are four plastic bowls under the pot, an average of about 26 cm. The spacing pillars between them are 30 mm long.

Pot plant saucers. Cheap and easy to get. Probably a lot cheaper and more UV stable that 3D printed parts.

(05-08-2018, 02:42)uncle_bob Wrote: [ -> ]Pot plant saucers. Cheap and easy to get. Probably a lot cheaper and more UV stable that 3D printed parts.

Thanks guys for the info, I will print the box and buy the pot plant saucers

Steve D

(05-08-2018, 14:54)Steve1506 Wrote: [ -> ]

(05-08-2018, 02:42)uncle_bob Wrote: [ -> ]Pot plant saucers. Cheap and easy to get. Probably a lot cheaper and more UV stable that 3D printed parts.

Thanks guys for the info, I will print the box and buy the pot plant saucers

Steve D

I now have my AQM working but I am getting a very high CO2 reading around 2000 when operating in my workshop. Is this to be expected ??

Steve D

Unlikely, I get a fairly constant 410 to 480ppm.

https://thingspeak.com/channels/328043

You can see when we are in the house or out. It rises when we are home.

Normally expect 380 in a greenhouse with everything growing at midday to 500 with a few people in a small room.

https://www.co2.earth

(11-08-2018, 23:10)Steve1506 Wrote: [ -> ]I now have my AQM working but I am getting a very high CO2 reading around 2000 when operating in my workshop. Is this to be expected ??

Seems a very high value even when working indoors.
Please check in the software if the selected model corresponds to the model of your CO2 sensor. There are two models, A and B.

(12-08-2018, 00:58)Werk_AG Wrote: [ -> ]

(11-08-2018, 23:10)Steve1506 Wrote: [ -> ]I now have my AQM working but I am getting a very high CO2 reading around 2000 when operating in my workshop. Is this to be expected ??

Seems a very high value even when working indoors.
Please check in the software if the selected model corresponds to the model of your CO2 sensor. There are two models, A and B.

Werk,
Thanks for the reply the label on the sensor says its a MH-Z19B but I have tried changing the software and get similar results. Reading the serial monitor it seems ti be fine then gives a high reading and stays that way. See data below. Do you think the sensor is faulty.

set as MH-Z19


Steve D

(12-08-2018, 11:36)Steve1506 Wrote: [ -> ]

(12-08-2018, 00:58)Werk_AG Wrote: [ -> ]

(11-08-2018, 23:10)Steve1506 Wrote: [ -> ]I now have my AQM working but I am getting a very high CO2 reading around 2000 when operating in my workshop. Is this to be expected ??

Seems a very high value even when working indoors.
Please check in the software if the selected model corresponds to the model of your CO2 sensor. There are two models, A and B.

Werk,
Thanks for the reply the label on the sensor says its a MH-Z19B but I have tried changing the software and get similar results. Reading the serial monitor it seems ti be fine then gives a high reading and stays that way. See data below. Do you think the sensor is faulty.

set as MH-Z19

Code:

 WeatherDuino 4Pro
Air Quality Monitor v8.0 b001

Please wait 30s
Configuring CO2 Sensor
Setting measurement range to: 5000
FF,99,1,0,0,0,0,0,66,
66,66
Measurement range changed!
Disabling ABC Funtion
Reseting Sensor
EF,AF,29,FE,0,0,0,1,0,
Calculated crc: 29
Wrong reply from CO2 sensor!
FF,86,1,9A,3B,0,0,0,A4,
Calculated crc: A4
CO2 read: 431 - Temp: 19

FF,86,1,9A,3B,0,0,0,A4,
Calculated crc: A4
CO2 read: 431 - Temp: 19

FF,86,1,9A,3B,0,0,0,A4,
Calculated crc: A4
CO2 read: 431 - Temp: 19

FF,86,1,9A,3B,0,0,0,A4,
Calculated crc: A4
CO2 read: 431 - Temp: 19

FF,86,1,9A,3C,0,0,0,A3,
Calculated crc: A3
CO2 read: 431 - Temp: 20

FF,86,1,9A,3C,0,0,0,A3,
Calculated crc: A3
CO2 read: 431 - Temp: 20

FF,86,1,9A,3C,0,0,0,A3,
Calculated crc: A3
CO2 read: 431 - Temp: 20

FF,86,5,AC,3C,0,0,0,8D,
Calculated crc: 8D
CO2 read: 1526 - Temp: 20

FF,86,5,9B,3C,0,0,0,9E,
Calculated crc: 9E
CO2 read: 1508 - Temp: 20

Init MH-Z19 Ended


Waking up the dust sensor...
Reading will be done 40s later.

Reading the dust sensor...

PMS7003 readings:
PM2.5: 2.39 ug/m3
PM10 : 2.39 ug/m3
PM2.5_1H_Avg : 2.39
PM2.5_NowCast: 2.39

FF,86,4,FE,3D,0,0,0,3B,
Calculated crc: 3B
CO2 read: 1302 - Temp: 21

Set as MH-Z19B
 WeatherDuino 4Pro
Air Quality Monitor v8.0 b001

Please wait 30s
Configuring CO2 Sensor
Setting measurement range to: 5000
FF,99,1,0,0,0,0,0,66,
66,66
Measurement range changed!
Disabling ABC Funtion
Reseting Sensor
21,10,1C,FC,0,1,0,71,0,
Calculated crc: 66
Wrong reply from CO2 sensor!
FF,86,1,9A,3E,0,0,0,A1,
Calculated crc: A1
CO2 read: 431 - Temp: 22

FF,86,1,9A,3E,0,0,0,A1,
Calculated crc: A1
CO2 read: 431 - Temp: 22

FF,86,1,9A,3E,0,0,0,A1,
Calculated crc: A1
CO2 read: 431 - Temp: 22

FF,86,1,9A,3E,0,0,0,A1,
Calculated crc: A1
CO2 read: 431 - Temp: 22

FF,86,1,9A,3E,0,0,0,A1,
Calculated crc: A1
CO2 read: 431 - Temp: 22

FF,86,1,9A,3E,0,0,0,A1,
Calculated crc: A1
CO2 read: 431 - Temp: 22

FF,86,1,9A,3E,0,0,0,A1,
Calculated crc: A1
CO2 read: 431 - Temp: 22

FF,86,3,ED,3E,0,0,0,4C,
Calculated crc: 4C
CO2 read: 1056 - Temp: 22

FF,86,3,E7,3E,0,0,0,52,
Calculated crc: 52
CO2 read: 1050 - Temp: 22

Init MH-Z19 Ended


Waking up the dust sensor...
Reading will be done 40s later.

Reading the dust sensor...

PMS7003 readings:
PM2.5: 0.00 ug/m3
PM10 : 0.68 ug/m3
PM2.5_1H_Avg : 0.00
PM2.5_NowCast: 0.00

FF,86,3,FE,3E,0,0,0,3B,
Calculated crc: 3B
CO2 read: 1038 - Temp: 22

Steve D

I have now fixed the problem by changing the resolution to 2000ppm in the software . I now get a reading of 399 outside in the air and 430 in my office. The AQM has been running for a few hrs. Not sure why this fixes it as the sensor does say it is good for 0 to 5000ppm

Steve D

Add between 10 and 20 to the offset and you should be about right, notice you are in Crewkerne so small town background levels will be 410pp upwards. (I visit Barrington regularly.)

(13-08-2018, 12:31)JT118 Wrote: [ -> ]Add between 10 and 20 to the offset and you should be about right, notice you are in Crewkerne so small town background levels will be 410pp upwards. (I visit Barrington regularly.)

Thanks for the advice Interesting that you visit this way I live on the hill behind the hospital overlooking the town so very clear ai I have had the AQM running now for over 24hrs outside and it is looking good AQ  is showing around 25 and the CO2 varies around the 390 mark so will offset by 20 to bring it in line. Hope to get the rest of my new station online in the coming weeks I have had the parts around for a while just no spare time to figure it all out.

Steve D