Hi I looking for a reliable CO2 sensor with available library to use with Gen3 Particle. Can be I2C or analog, just need to be able to have input voltage 3.3 or 5v. I look for a sensor with a cover like tube to be able to mount directly under an enclosure without extra cable. The range can be 2000,…

@steeves I’ve played around with a few. They’re combination TVOC/C02 sensors which are quite cheap. The one that I’ve found the most reliable is the CCS811. Here’s some others that you can look into: MICS-VZ-89TE GY-MCU680V1 Senseair S8-0053 MH-Z14A SGP30 BME680 These came from a long conver…

Thanks @jaredwolff about the CCS811, it does provide PPM output ? It’s look like eCO2 with a range of 400 to 8192 ppm. Using a breakout sensor, I understand that I’ll need to put the sensor inside of my enclosure and drill some holes to have a good measurements instead of find a sensor like a probe.…

@RWB first I look for 0-2000 or 0-5000 PPM sensor. SGP30 it’s output as PPM ? thanks

I have the Co2 readings at 0-2500ppm. https://app.losant.com/dashboards/599c9a05b36c040007c6e20c

ok thanks. and in the same orientation, temp-hum sensor, you propose which one ? My environment is very high humidity. SHT31-D ?

Yes that’s the temp humidity sensor I use and it works great.

Yes and yes. Without adequate airflow you’re not going to get accurate results. @RWB how long ago did you use the CCS811? I’ve actually seen more variation with the SGP30. (In particular, temperature variance) @steeves just remember that these devices estimate c02. Supposedly the IR based ones are…

[image] jaredwolff: @RWB how long ago did you use the CCS811? I’ve actually seen more variation with the SGP30. (In particular, temperature variance) I used it for like 6 months, it was worthless even with trying different libraries and different sensors. @ScruffR had the same experience alon…

Oy. That sucks that you guys had a hard time with it. I’ve been away from home for almost 2 months. I’ve had several sensors running side by side (CCS811 with v2.0 firmware), SGP30 and BME680. The CCS811 readings seemed to be more reasonable. [particle-jared] Considering y’all have had such good…

Co2 sensor recommendations

Hardware

RWB August 10, 2019, 8:08pm 4

Is a garbage sensor that drifts all over the place based on my and other experiences with it over time.

SGP30 senor is super stable from my testing over the last 6 months. Go with that one if you want to try one of these Voc/Co2 senors.

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Co2 sensor recommendations

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