ESP8266 Community Forum

I have 7 DS18B20 sensors in different parts of the house.
Using Arduino I used a 2.2 k pull up resistor.
The sensors were in parasite mode allowing communication with the use of only two wires.
I would like to replace Arduino for ESP8266.
But there is a problem. Using 1k resistor I can connect only 2 sensors.
Any idea?

Personnally, I've never used the DS18B20 in parasite mode.
Are you using also a MOSFET as a StrongPullUp along your 2K2 as the spec suggest ?

No.
See here:
https://www.strangeparty.com/2010/12/13/arduino-1-wire-temperature-sensors/ and with Arduino (5V) it works fine with 7 sensors and long distance wires (I think total abut 30 m)

You can try with 1K resistor.
If it works, you will be lucky.
(But still, this is not following the specs.)