Search found 4 matches

by nldanny
17 May 2019, 18:44
Forum: ESP Easy: Hardware
Topic: MHZ19B Unknown response
Replies: 16
Views: 9538

Re: MHZ19B Unknown response

I have checked all connections, this didn't work, made also the changes as recommended, no result.
Hardware serial was also not the solution

I am afraid the sensor is broken.
by nldanny
11 May 2019, 07:38
Forum: ESP Easy: Hardware
Topic: MHZ19B Unknown response
Replies: 16
Views: 9538

Re: MHZ19B Unknown response

Okay, but then i see different GPIO's.

Do i need to connect to D7 and D8 for example:
2019-05-11 07_37_34-Window.png
2019-05-11 07_37_34-Window.png (6.94 KiB) Viewed 9512 times
by nldanny
10 May 2019, 20:05
Forum: ESP Easy: Hardware
Topic: MHZ19B Unknown response
Replies: 16
Views: 9538

Re: MHZ19B Unknown response

Hi Grovkillen,

I am quiet new with this type of sensors.
This is my first try from ali to do something selfmade.

Can you explain something on how to do this with hardware serial?
by nldanny
10 May 2019, 19:43
Forum: ESP Easy: Hardware
Topic: MHZ19B Unknown response
Replies: 16
Views: 9538

MHZ19B Unknown response

Hi, I receive error below (ESPEASY log file). I have tried several things on different forum, but nothing works. Does someone has an idea? 153789: MHZ19: Unknown response: 0 0 0 0 0 0 0 0 0 153790: MHZ19: Init OK MHZ19b blinks now and then red. Wire scheme: Wemos D1 mini - MHZ19B 5V - Vin G - GND D7...