In my use case, I have to detect things about 3-4 meters. I don't need to be accurate, +-2 or 3cm is enough. The EV3-G and most other places have a max distance of 255cm, which I understand that it is a protocol limitation.
But is there a software solution, e.g. controlling send/receive with software and calculate on the main brick? Best if it is in the form of EV3-G custom blocks.