I will try connect 18B20+ termomether to raspberry pi 3.

It's how i do that: IMG

In /boot/config.txt i add:


After reboot in console, as root, I

modprobe w1-gpio

modprobe w1-therm

But after

ls /sys/bus/w1/devices/

directories list are empty.

Any ideas?

  • Yeah, you right ;p. I set bad pin in fritzing.
    – John Smith
    Commented Apr 8, 2018 at 10:58
  • 1
    You should not need the modprobes. That is automatically done by the dtoverlay in /boot/config.txt. A photo of your connections will be useful.
    – joan
    Commented Apr 8, 2018 at 11:09

1 Answer 1


Ok, problem was solved by type in /boot/config.txt


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