@dylan.balloo the build section (https://www.mysensors.org/build ) has all sketches for the MySensors project, including the serial gateway https://www.mysensors.org/build/serial_gateway
If you look at the FTDI chip, it should say PL2303 on it. Those are the only ones that I have gotten to work with my Vera. I do kind of wish that Vera would add support for the CH340s as those are another common USB to serial chip.