ESP8266 Community Forum

Hi All

Can I use multi 1 wire device ? I want to use two ds18b20 my project

thaks and regards

Yes you can pin2 is one wire...

There is an example of this temp sensor in the programming examples section...

And if I recall correct the one wire bus supports several devices I am not sure as to what the hard limit is on the one wire bus for the esp8266 but I would assume it depends on the power and hardware I know a 1wire bus is able to search out and find 75 devices per second.

But I am near 99.9% sure 2 temp sensors should not be an issue at all.

Enjoy

thanks for answer
I tried 2 sensors , no any problem works well

like code;

let cura=0
temp 0 cura
let curb=0
temp 1 curb
wprint cura
wprint curb

all ok