I am using the 1 wire pi plus board to connect fifteen DS18B20 sensors to pi using a Cat5 cable with 50m long wiring. I have followed the instructions to Install OWFS and Python-OW from your website and made the connections as below. One twisted pair is used for GND and DQ and one single wire rom another pair is used for VDD. Rest of the wires in the cable are not used.
VDD from each sensor is connected to 5V on the board using a single wire from one of the twisted pairs.
GND from each sensor is connected to GND on the board using one of the wires from the twisted pair
DQ from each sensor is connected to OW on the board using the other wire from the same twisted pair
But when I run the Python script I am getting inconsistent results. some times it reads all the 15 sensors, some times it reads only few sensors and sometimes it does not read any sensors.
Can you adise on whats wrong?