On Sat, Nov 29, 2014 at 3:14 PM, Nathan McCorkle <[email protected]> wrote: > On Sat, Nov 29, 2014 at 5:06 AM, Russell Senior > <[email protected]> wrote: >>>>>>> "Nathan" == Nathan McCorkle <[email protected]> writes: >> >> Nathan> I just made this Arduino full 8-pin RS-232 level shifter >> Nathan> 'shield' a few weeks ago, and got the boards today! It can act >> Nathan> as a sniffer for RS-232 traffic, or hit the switch to disable >> Nathan> pass-through and let the Arduino take over as an intermediate or >> Nathan> to emulate either host/peripheral devices. >> Nathan> https://oshpark.com/shared_projects/Vs4zWf41 >> >> Nice! I've been thinking about a similar device (I was going to use a >> teensy) for sniffing level-shifted RS-232 serial. > > > Cool! I did the project in KiCad
I forgot to add, that if you wanted to just sniff, your microcontroller would just need the 8 GPIO lines (plus another for enable unless you connect that to a switch, and a few optional ones if you wanted to go into low-power modes), but you'd still need the two Exar level shifter chips (to get 8 inputs total, since each chip gives either 3 or 5 inputs). -- -Nathan _______________________________________________ dorkbotpdx-blabber mailing list [email protected] http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber
