Smart home on RaspberryPi: a choice of 1-Wire and I2C cabling alongside 230V

Hello,
this is my first post on the forum so please be understanding, if the topic has already been discussed somewhere - please let me know, despite searching, I have not found the answer to my doubts.

For the last six months I have been designing a smart home system based on Raspberry Pi, Razzberry, 1-Wire and I2C protocol. Everything seemed almost ready, apart from the design I have already picked up the most important component - the flat

However, at the very end a doubt arose ... what kind of cabling for 1Wire and I2C, so far I was considering UTP but it turned out that the cable will go near/near the 230V cables (when laying the cabling for the smart home system, I will be changing the electrical installation).

Therefore, with these protocols, could the 230V cables introduce interference strong enough to cause falsifications in the sensor readings? If I opt for FTP cable, will I be able to lay signal cables next to voltage cables without any worries?

The longest distance over which the signal cables would lie next to the voltage cables is 20m.

I2C is compeltely not suitable for this. The main use of I2C is for communication between circuits within a single device. If 1-wire and Raspberry, then definitely not based on GPIO, but on some external chip and preferably with power pull-up. Better think CAN or RS-485.

MrBool wrote:

(...)Better think about CAN or RS-485.

I confirm, it is definitely better to base it on RS485. And if you use MODBUS libraries, which are even under PHP, making a management interface is already easy. And there are a lot of devices working over RS485 with modbus. Besides, there are a lot of solutions with modbus on TCP/IP, which makes the intelligent building start to be more like Lego blocks.

Good luck!