DS18b20.....again
Posted: 21 Sep 2019, 17:17
Hello all
again it´s me and again i have trouble with connecting my tempsensors together.
using "normal 4MB from 27.08.2019" on a NodeMCU.
i have a 12 meter long cable (microphonecable).
after 7 meter there is the first sensor, then after 2 more meter the second and at the end at 12 meter there is the last sensor.
So 3 sensors in summary.
I used an external 4,7k resistor.
It looks like random i loos a sensor by showing up in "devices" with "NaN".
So any ideas would help me a lot right now....
Questions:
in "Hardware" i can config the port (GPIO-1/D10/) as Input or output high/low.
Do i have to set somthing here or leave it as "default" ?
Thank you so much for your help
Sascha
again it´s me and again i have trouble with connecting my tempsensors together.
using "normal 4MB from 27.08.2019" on a NodeMCU.
i have a 12 meter long cable (microphonecable).
after 7 meter there is the first sensor, then after 2 more meter the second and at the end at 12 meter there is the last sensor.
So 3 sensors in summary.
I used an external 4,7k resistor.
It looks like random i loos a sensor by showing up in "devices" with "NaN".
So any ideas would help me a lot right now....
Questions:
in "Hardware" i can config the port (GPIO-1/D10/) as Input or output high/low.
Do i have to set somthing here or leave it as "default" ?
Thank you so much for your help
Sascha