1wire sensor not giving values...

Pavelf

Hi, my tenperature sensors connected to Unipi 1.1 suddenly stopped giving temperatures.
I have not done any hardware changes, just rebooted Pi several times and I was doing some "cleaning" of the Pi /apt-get autoremove etc. / ---- could that be a reason ???

evok.py is telling this - is this usual or does this mean there is a problem somewhere ?

root@unipi:/opt/evok# ./evok.py
Listening on port: 80
UniPi version:1.1
Entering measure loop
Entering 1wire loop
New sensor DS18B20 - 281C675F07000040
New sensor DS18B20 - 28FF9C8C6416038A
New sensor DS18B20 - 28FF6A09641603E8
New sensor DS18B20 - 28FF669B6416032F
New sensor DS18B20 - 28FF1D41631604D1
Status unexpected
Process OwBusDriver-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/opt/evok/owclient.py", line 357, in run
    self.do_scan()
  File "/opt/evok/owclient.py", line 290, in do_scan
    for sens in ow.Sensor("/uncached").sensors():
  File "/usr/lib/python2.7/dist-packages/ow/__init__.py", line 482, in sensors
    list = owfs_get( self._usePath )
  File "/usr/lib/python2.7/dist-packages/ow/__init__.py", line 159, in _get
    raise exUnknownSensor(path)
exUnknownSensor: '/uncached'

TomasKnot

Hi @Pavelf!

It's possible - do you have OWFS installed still? It could be caused by a faulty sensor as well, try plugging them in one by one.