Temp probe problem

[Rowdeus]

Hi I am trying to setup a reef pi and having some trouble with the temp probe. I saw another thread but didn't seem to have an answer.

I have checked to make sure 1 wire is enabled.

I have it wired like this:

No device showing:

Do I have this wired incorrectly? Brand new probe. Any help would be greatly appreciated!

 

[robsworld78]

Hi I am trying to setup a reef pi and having some trouble with the temp probe. I saw another thread but didn't seem to have an answer.

I have checked to make sure 1 wire is enabled.

I have it wired like this:

No device showing:

Do I have this wired incorrectly? Brand new probe. Any help would be greatly appreciated!

Looks like the 1-wire bus is enabled but those two addresses don't look right, I think they all start with 28-xxxxx and you should only have one showing with one sensor connected. If you disconnect the sensor does it just show "w1_bus_master1", if so that's good.

Do you know for certain that IO18 is GPIO4? That's the pin the 1wire uses as default. Connections look good, pullup resistor there, should be about 4.7k. It could just be a faulty sensor, looks like the Pi is setup correctly.

 

[Ranjib]

whats the output of `dmesg` ? it should show some error/warning related to one wire. This can originate from bad circuit or sensor