sensor ds18b20 stop working

[raphex]

I have many issue in having my central heating working with my PI
i have fixed a lot by changing the SD card and the usb power

One problem still remains with ds18b20 ... (3 connected)
after 1-3 days they stop answering .. the folders containing data are not there anymore and even if I do a sudo reboot .. they don't work !

the only way to make them xork again is to remove the power cord then reconnect the power !

have you a way to fix that ?

[raphex]

someone got an idea???????

[ImBassDoor]

I have found a solution!

Code: Select all

sudo nano /etc/rc.local

add

sudo modprobe w1-gpio
sudo modprobe w1-therm

[DougieLawson]

You don't need sudo in rc.local it's run as root.

[SteveDee]

...i have fixed a lot by changing the SD card and the usb power...

I wonder if you still have a power or other electrical problem.

Have you measured the 5Volt supply on the pcb?

How long are the wires connecting sensors to the RaspberryPi?

I have a system with 3 sensors. It hasn't missed a beat in over 2 months of operation (http://captainbodgit.blogspot.co.uk/201 ... ensor.html)

[Liyo]

Hi everyone!

Sorry for updating this post but I'm facing the exact same problem.

3 sensors connected for my heating controller and each every 2 weeks, they disconnect. The way I solve it, I have to turn off the rasp, I disconnect one random wire which joins the sensors with the rasp and I recover the 3 folders from each sensor when turning back on.

It's not a big big problem but it's a bit annoying

[rpdom]

Reopening a post that is over four years old is not a good idea.

The answers given above are probably true in your case too, though. Either a wiring fault or power issues. I have had some of those sensors running without problems for years now.

[Liyo]

Reopening a post that is over four years old is not a good idea.

The answers given above are probably true in your case too, though. Either a wiring fault or power issues. I have had some of those sensors running without problems for years now.

Ok, sorry for that.

I take the ideas and I will try it.