i got new sensor. this is working without problem. so first sensor is broken.

TD-er wrote: ↑03 Oct 2019, 10:27 Yep, so it seems.

Has the sensor ever worked? You could test with an old version of ESPEasy, like one of end 2017 or first weeks of 2018. Just to be sure it isn't something related to a recent change or something related to software serial. The builds from around that time were even using an older version of softwar...

Has the sensor ever worked? The bug that was the initial cause of this topic has been resolved a long time ago. Also make sure you have not swapped RX and TX. You may also test to swap them in the configuration. Do you see the red light in the sensor glow every X seconds? Make sure your power suppl...

hi,

is it possible to connect an mq-9 to nodemcu v3 with espeasy?
i cant find anything about this sensor.

thanks
daniel

hi, i have the same problem.
i tried all settings found here (hard and softserial, different pins...) and i only got the following message in log:


MHZ19: Unknown response: 0 0 0 0 0 0 0 0 0
MHZ19: Init OK

does anyone has an idea whats wrong, or is the mhz19b DOA?

thanks
daniel