error with ds18b20

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any idea how I can fix this error:

Error reading DS18B20Sensor with hardwareId 28-000007053e71: ENOENT, open ‘/sys/bus/w1/devices/28-000007053e71/w1_slave’

i notice that sometimes the folder does not appear anymore at /sys/bus/w1/devices. Then i need to reboot the pi and there it is again…

I had the same problem, in my case the ds18b20 was defect.
I have 3 sensors and all of them disapeared every now and then, after a reboot it worked for a while, turned out to be one sensor that was faulty.

@incmve Okay, I will save some money to order a new one. (btw, on your blog most of the images do not work, that too bad, it’s pretty interesting to read)

I know I had to restore an old backup and the images got lost, will try to restore them if I can find them.

@vanturenhout said:

@incmve Okay, I will save some money to order a new one. (btw, on your blog most of the images do not work, that too bad, it’s pretty interesting to read)

Edit: Hmm, It looks like there’s something else happening. Suddnely the other one is giving some errors also now…It sounds strange that all of a sudden both sensor got broken…

It depends, are both sensors on the same GPIO?
In my case I sometimes lost one and sometimes all 3, all caused by a single faulty sensor.

@incmve Yes they are on the same GPIO. I will test by disconnecting one and see what happens…