Problem solved, seemed I got one sensor on bus damaged on data wire and this caused this problem. Best Jiri.

Hi there,

I am new to Unipi 1.1 and EVOK. I got several temp sensors (DS18B20) across my house which are connected in serial. I am using RJ45 splitter for each room and from last position it is connected to 1Wire on UniPi.

The main problem is when I run EVOK, it will found all sensors but only for 7 sensors temp is shown. Others are N/A... It will throw me an error:

Process OwBusDriver-1:
Traceback (most recent call last):
File "/usr/lib/python2.7/multiprocessing/process.py", line 267, in _bootstrap
self.run()
File "/opt/evok/owclient.py", line 395, in run
mysensor.read_val_from_sens(mysensor.sens)
File "/opt/evok/owclient.py", line 126, in read_val_from_sens
if not (new_val == 85.0 and abs(new_val - self.value) > 2):
TypeError: unsupported operand type(s) for -: 'float' and 'NoneType'

Anybody occure same problem? What is the best approach to have multiple sensors on 1Wire?

Thanks for replay. Jiri.

@martin-kudláček Thank you Martin, will do that.

Hello,

Is there any solution how to remote controll UniPi API requests? For example from my phone outside local network.

I think about public IP address with forwarding to Raspberry, but this can be potentional threat, if there is no authentication on EVOK API (maybe i am out of date).

Thanks for reply