I have two separate control systems running on RPi and Arduino. What I would like to do is to be able to monitor the temp from the Arduino setup on the RPi as this allows remote access.
I don't want to change the whole system to run on RPi. The RPi already uses onewire with another sensor. So I have a couple of questions:
Is it possible to run the bus from Onewire to two devices? I am assuming that if I use the same bus then the Arduino would also detect the other sensor and I would have to de-conflict this....
Doe the +5V and GND have to come from the device that the sensor is attached to, or, providing it is stable could it come from elsewhere? i.e if the above works, would it matter if I used power and gnd from the RPi with only the data wire going back to the Arduino?