Temp Sensor Not Detected

[mcarleton]

Is there a driver or an inlet/sensor that needs to be configured to use the temperature probe?  I have it connected to the "Temp 1" port(s) and there's voltage across them that I would expect but Reef-Pi doesn't list the DS18B20 (or any other) sensor.  Have I missed a step?

[Rob F]

No the temp sensors just show up in the drop down when you add a sensor. Check to see if the 1-wire is enabled on Pi.

In Pi terminal type the following command.

sudo raspi-config

Then go to "interfacing options" and "1-wire" and enable it.

[mcarleton]

No the temp sensors just show up in the drop down when you add a sensor. Check to see if the 1-wire is enabled on Pi.

In Pi terminal type the following command.

sudo raspi-config

Then go to "interfacing options" and "1-wire" and enable it.

Aah, yeah ok I think I missed that one during setup, thanks!

[Rob F]

Aah, yeah ok I think I missed that one during setup, thanks!

No problem.

[fred73]

Hi Rob

I'm facing the same issues

Enable it and still, it will not detect anything

pi@raspberrypi:~ $ sudo raspi-config
pi@raspberrypi:~ $ ls /sys/bus/w1/devices/
w1_bus_master1

[Rob F]

Hi Fred, the address of the sensor should show up next to w1_bus_master1, the fact you get that means the bus is working.

Can you check the voltage on the port, you should get +5v across that pin and ground and there should be +3.3v across the data pin.

Any chance you have a second sensor to try?

[fred73]

Hi Fred, the address of the sensor should show up next to w1_bus_master1, the fact you get that means the bus is working.

Can you check the voltage on the port, you should get +5v across that pin and ground and there should be +3.3v across the data pin.

Any chance you have a second sensor to try?

Hi rob

Another sensor did the trick. I also double-check all voltages are correct 3.3 data and 5v

[Rob F]

Right on, I guess we know what that means.