Hi everyone! sorry for my later reply.
Markus thanks for your response. I decided use a simple sensor temperature. If I can’t use 1wire because the manufacturer don’t make 1wire ADC I won’t use it. I thought to use 1wire protocol because the quantity of wire is small and with one pin of the Microcontroller I can manage all. But I won’t use it because I see that there are other most common protocols.
Graynomad, the 10 sensor will stay in differents positions. The distance between Arduino-10 sensors will be approximately 30m. The distance between sensors will be short (2m).
Paul, I thought yesterday that I can use RS485 because is differential and I can connect others PIC in the bus. This is the best and easy protocol that I could use.
I think that I can do the following idea: 10 sensors temperature (with its voltage-intensity converters) and connect them with a PIC for use its internal ADC. The pic should have 10 channels ADC for connect 10 sensors. The PIC will process the analogs signals. The pic will connect with the Arduino Due with a RS485 bus.
I will need to adapt the pic’s out RS232 for RS485. I think that I can use a MAX485 for adapt it. I think that I must use two MAX485 for adapt the signals between protocols. One of them in the out of the PIC and the other one in the entrance of the Arduino Due’s RS232. And I read that Arduino doesn’t use TTL voltages in the RS232 (0-3.3V in Arduino?)
if i use RS485 I will be able to connect more PICs in the future if I need use more Sensors (using MAX485). I don’t know if MAX485 adapts the TTL signals of the PIC (because the PICs use RS232 but with TTL signals).
[Sensors with I-V Converters} → PIC’s ADC → MAX485 → (BUS RS485) <— MAX485 <— Arduino Due ----------> DATAS
What do you opinion? Can I use MAX485 easily for adapt the RS232-RS485 and RS485-RS232 conversion?
Thanks a lot for yor responses!!