- Thu Mar 16, 2017 2:16 pm
#193925
Greetings,
Is anyone working with the CCS811 VOC/CO2 sensor? I'm running the example code ported to a Photon (very minor changes), and the results I'm getting doesn't look right. The voc and co2 response looks identical, just scaled differently. I've tried exposing the sensor to volatiles (alcohol) and pure co2, but both channels respond. Overlaying the plots of time sequenced data shows the response to changes are identical, except for scaling (co2 is about a factor of 7 higher than voc, but does vary). In fresh air co2 = ~410, voc = 0, so it appears to be working. I've walked through Nate's example code and I don't see anything that stands out.
Has anyone got this sensor to work? Am I missing something?
- Tim
Plot:
https://www.dropbox.com/s/00iv1sa76z74i ... .jpeg?dl=0
Is anyone working with the CCS811 VOC/CO2 sensor? I'm running the example code ported to a Photon (very minor changes), and the results I'm getting doesn't look right. The voc and co2 response looks identical, just scaled differently. I've tried exposing the sensor to volatiles (alcohol) and pure co2, but both channels respond. Overlaying the plots of time sequenced data shows the response to changes are identical, except for scaling (co2 is about a factor of 7 higher than voc, but does vary). In fresh air co2 = ~410, voc = 0, so it appears to be working. I've walked through Nate's example code and I don't see anything that stands out.
Has anyone got this sensor to work? Am I missing something?
- Tim
Plot:
https://www.dropbox.com/s/00iv1sa76z74i ... .jpeg?dl=0