I bought the RS485 shield and the Raspberry Pi v3 in order to communicate with the modbus enabled house ventilation unit. My plan was to build the code in Node Red, but I am not able to get started.
All guides that I find seems to be outdated and refers to edit the /etc/inittab, which is not present in the new version of Raspian. Can anyone here give me a hint in the rgith direction to set up the new Raspberry PI 3 for the RS485 shield.
Thanks in advance