Today I bought six Unipi 1Wire temperature sensors DS18B20 with RJ45 Plug and one Unipi Hub as seen on: https://www.unipi.technology/hardware_documentation/1-wire-network-46
Manual says the temperature sensor DS18B20 has two data lines 6 and 7 and should both be used.
When I use the hub with a Raspberry Pi (on GPIO4) which data line should I use, outgoing from the hub to the Raspberry (GPIO4)?
I don’t want to blow up something………….
Furthermore explanation says:
The 1-Wire bus in all UniPi devices does not use just one wire, but it uses two data lines to serialize the network in order to maintain maximum reliability ..........
AND: it is necessary to follow the right order when connecting sensors (or other HUBs) as shown in the following pictures (mentioned in the URL above)……………..
AND: it is required to connect both data lines 6+7 and of course lines 5 (Vcc - 5V) and 8 (GND).......
Answer on this forum:
Basically it will work if you connect only the pin 6 of rj45 to your DS12B20 DQ line but if you are using any of our hub or 1wire devices you will break the 1wire bus if you do not connect the pin 7 too.
Thus this mean that i can not use the Unipi hub?
Where should I put my 4.7k resistor??
Thnxs for your help!