>>>>> "mc" == mick crane <mick.crane@gmail.com> writes: mc> serial console/ parallel is likely me not understanding terminology. mc> These Raspberry Pis, Arduinos with the connection with all the pins, mc> what protocol is that expecting? those ports use serial. check out: https://en.wikipedia.org/wiki/RS-232 https://en.wikipedia.org/wiki/Serial_port -JimC -- James Cloos <cloos@jhcloos.com> OpenPGP: https://jhcloos.com/0x997A9F17ED7DAEA6.asc