Search found 4 matches

by schreda
26 Mar 2019, 17:51
Forum: ESP Easy: Hardware
Topic: MH-Z19 calibration issues
Replies: 9
Views: 436

Re: MH-Z19 calibration issues

Got my new MH-Z19B today and replaced it.
Now i got the problem, that the ppm value stucks at 5000. Initially it shows 410ppm and (i guess after the boot process) it switches to 5000..
Any thoughts?
by schreda
22 Mar 2019, 11:24
Forum: ESP Easy: Hardware
Topic: MH-Z19 calibration issues
Replies: 9
Views: 436

Re: MH-Z19 calibration issues

Thanks, i will try this one!
by schreda
16 Mar 2019, 13:28
Forum: ESP Easy: Hardware
Topic: MH-Z19 calibration issues
Replies: 9
Views: 436

Re: MH-Z19 calibration issues

Ok.. Thanks for your answer In the datasheet of the sensor, there is an explicit explanation under which conditions the sensor has to be calibrated. So i put it into an environment with 400ppm (~air outside) for 20 minutes after (and to be sure also before) i sent the calibration command. So basical...
by schreda
13 Mar 2019, 12:49
Forum: ESP Easy: Hardware
Topic: MH-Z19 calibration issues
Replies: 9
Views: 436

MH-Z19 calibration issues

Hi. I am already really frustrated with this and can't get it work properly, so i would thankful if someone could help me out here! That you can understand the issue i have with my MH-Z19, i'll describe the steps i did so far: I disabled ABC on my ESPEasy instance (version mega-20190305) I put the s...