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empierre / arduino-mysensors-contribs

arduino scripts for MySensors IoT
http://www.mysensors.org
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MiCS-6814 Sensor seems able to read NO2 value only #15

Open aldoagosta opened 8 years ago

aldoagosta commented 8 years ago

Hi,

it seems that sensor (Grove version of MiCS-6814) does not read concentrations other than NO2. NO2 is the only value changing over time while NH3 stands still even with a bottle of Ammonia placed below. By the way putting the ammonia bottle beside the sensor NO2 level decrease while NH3 stands still as said above.

The sensor is connected to a I2C port on arduino one Rev. 3 board thru Base Shield 2.

Thank you for support. Regards

Aldo

empierre commented 8 years ago

Hello,

NO2 is sensitive yes: chart 2

For CO, I have 0 or 1 if I can say: chart 1

for NH3 this is also 0 or 1 but rarely... chart 3

I guess this should be reported to Seed that sells the board since you tested it with NH3 reference I don't have: http://www.seeedstudio.com/depot/Grove-Multichannel-Gas-Sensor-p-2502.html

empierre commented 8 years ago

going back to the base sketch I have this:

The concentration of NH3 is 0.99 ppm The concentration of CO is 1.20 ppm The concentration of NO2 is 0.03 ppm

and you ?

aldoagosta commented 8 years ago

Hi Emmanuel, same CO (1.20 ppm) and NH3 (0.99 ppm) values here. NO2 is active, I confirm!

Going to put a tech request to seedstudio as for you suggestion.

Thank you!

Aldo Il 28/Feb/2016 11:24, "Emmanuel" notifications@github.com ha scritto:

going back to the base sketch I have this:

The concentration of NH3 is 0.99 ppm The concentration of CO is 1.20 ppm The concentration of NO2 is 0.03 ppm

— Reply to this email directly or view it on GitHub https://github.com/empierre/arduino/issues/15#issuecomment-189836684.

aldoagosta commented 8 years ago

I wrote to seedstudio as well as to Arduino sketch father :-) https://github.com/Seeed-Studio/Mutichannel_Gas_Sensor/issues/4

Sensor Manufacturer specifies how to read values here (no matter if the models listed are different): https://www.cdiweb.com/datasheets/e2v/Load%20resistance%20for%20MiCS%20sensors%20measurements.pdf

I guess there's something wrong in Grove firmware...

Bye Aldo

empierre commented 8 years ago

Great !

It seems it is out of stock, hope they have not dropped it off due to those issues ?

aldoagosta commented 8 years ago

Next try is to write firmware since the beginning. I never wrote a row in my life... but I would start from here:

http://it.mathworks.com/help/supportpkg/arduino/examples/read-temperature-from-an-i2c-based-sensor-using-arduino-hardware.html?s_tid=gn_loc_drop#zmw57dd0e2073

ericltongfb commented 8 years ago

has anyone gotten any word back from seeedstudio about the lack of responsiveness of the other gas channels?

aldoagosta commented 8 years ago

No!

Aldo Agosta Il 19/Apr/2016 15:20, "ericltongfb" notifications@github.com ha scritto:

has anyone gotten any word back from seeedstudio about the lack of responsiveness of the other gas channels?

— You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub https://github.com/empierre/arduino/issues/15#issuecomment-211920201

ericltongfb commented 8 years ago

seems silly that they are selling a sensor for $40 that only records one gas :/

epillar commented 8 years ago

I am having a ton of problems getting this sensor to work and now I know why. Does anyone know if the CO channel works? Does anyone know if they are going to release a firmware update for this board?

aldoagosta commented 8 years ago

Someone tried with CO but it seems it does not work as expected.

I have no news from seedstudio on how and if they will solve the issue. I think they will not since they do not sell the sensor anymore!

Good luck!

Aldo Il 27/Apr/2016 17:39, "epillar" notifications@github.com ha scritto:

I am having a ton of problems getting this sensor to work and now I know why. Does anyone know if the CO channel works? Does anyone know if they are going to release a firmware update for this board?

— You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub https://github.com/empierre/arduino/issues/15#issuecomment-215124434

epillar commented 8 years ago

Well dang. I wonder if I desoldered the chip from the board and put it on the protoboard directly if all 3 channels would work.

pawel-smth commented 7 years ago

Hi. There was an update from SeedStudio for this sensor on Nov'2016 http://wiki.seeed.cc/Grove-Multichannel_Gas_Sensor/ Has anybody checked if it solved the issue?

Does their code https://github.com/Seeed-Studio/Mutichannel_Gas_Sensor work fine? I can't check myself as I'm on nodemcu/lua and not Arduino:)

aldoagosta commented 7 years ago

Hi,

I did not try it yet.

BTW it is strongly suggested to update the firmware to the new version 2. That's not easy at all to have all the 6 wires soldered in so small pins... :-(

Bye

Aldo

2017-08-21 15:37 GMT+02:00 Pavel Gorbanj notifications@github.com:

Hi. There was an update from SeedStudio for this sensor on Nov'2016 http://wiki.seeed.cc/Grove-Multichannel_Gas_Sensor/ Has anybody checked if it solved the issue?

Does their code https://github.com/Seeed-Studio/Mutichannel_Gas_Sensor work fine? I can't check myself as I'm on nodemcu/lua and not Arduino:)

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/empierre/arduino/issues/15#issuecomment-323745687, or mute the thread https://github.com/notifications/unsubscribe-auth/AQYqWMd0nHakmtA-CjGsUPKPyFj11z6Dks5saYgEgaJpZM4HkwxS .

aldoagosta commented 7 years ago

Hi,

firmware updated to V2. Now trying the sensor with its own sketch. Seems to work better than previous firmware and sketch version but it takes time to get warm enough in order to have reasonable data.

First read:

The concentration of NH3 is 109.19 ppm The concentration of CO is 40.73 ppm The concentration of NO2 is 0.06 ppm The concentration of C3H8 is 1206245.37 ppm The concentration of C4H10 is 265205.68 ppm The concentration of CH4 is 2409793.50 ppm The concentration of H2 is 21.93 ppm The concentration of C2H5OH is 30.29 ppm

After 3 minutes:

The concentration of NH3 is 38.04 ppm The concentration of CO is 24.93 ppm The concentration of NO2 is 0.07 ppm The concentration of C3H8 is 246049.32 ppm The concentration of C4H10 is 68764.14 ppm The concentration of CH4 is 391541.68 ppm The concentration of H2 is 10.36 ppm The concentration of C2H5OH is 15.98 ppm

I'm not into a GAS room... :-D

Bye

2017-08-26 9:09 GMT+02:00 Aldo Agosta aldo.agosta@gmail.com:

Hi,

I did not try it yet.

BTW it is strongly suggested to update the firmware to the new version 2. That's not easy at all to have all the 6 wires soldered in so small pins... :-(

Bye

Aldo

2017-08-21 15:37 GMT+02:00 Pavel Gorbanj notifications@github.com:

Hi. There was an update from SeedStudio for this sensor on Nov'2016 http://wiki.seeed.cc/Grove-Multichannel_Gas_Sensor/ Has anybody checked if it solved the issue?

Does their code https://github.com/Seeed-Studio/Mutichannel_Gas_Sensor work fine? I can't check myself as I'm on nodemcu/lua and not Arduino:)

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/empierre/arduino/issues/15#issuecomment-323745687, or mute the thread https://github.com/notifications/unsubscribe-auth/AQYqWMd0nHakmtA-CjGsUPKPyFj11z6Dks5saYgEgaJpZM4HkwxS .

empierre commented 7 years ago

Better result yet ? Seems they closed tickets without any answer...

aldoagosta commented 7 years ago

Hi Emm, they released a new code and a new fmw. Works better but values for some gas are crazy! I'll send u details later on...

Il 18/Set/2017 08:23, "Emmanuel" notifications@github.com ha scritto:

Better result yet ? Seems they closed tickets without any answer...

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/empierre/arduino/issues/15#issuecomment-330136938, or mute the thread https://github.com/notifications/unsubscribe-auth/AQYqWDtXXW8DolEsHGVhcrfQ2gsSuxjPks5sjgxVgaJpZM4HkwxS .

empierre commented 7 years ago

I guess you need to post on their site as they closed all tickets without any answer ,even for your...

On Mon, Sep 18, 2017 at 9:11 AM, aldoagosta notifications@github.com wrote:

Hi Emm, they released a new code and a new fmw. Works better but values for some gas are crazy! I'll send u details later on...

Il 18/Set/2017 08:23, "Emmanuel" notifications@github.com ha scritto:

Better result yet ? Seems they closed tickets without any answer...

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/empierre/arduino/issues/15#issuecomment-330136938, or mute the thread https://github.com/notifications/unsubscribe-auth/ AQYqWDtXXW8DolEsHGVhcrfQ2gsSuxjPks5sjgxVgaJpZM4HkwxS

.

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