Dual rs232 DB9 adapter "plank"

Suggested in the IR thread: a dual rs232 serial port board with loop back, sniffing and man in the middle.

Chip: HGSemi 3232 or 3Peak 3232 or Maxim if the scalpers have a good price. SO16 seems to be the sweet spot

DR9 (DB9) : mid grade: solid milled gold plated pins, but the solder pins are normal crimped copper/tin.

Will make up a schematic.
To be honest I thought Iā€™d never have to do a max232 chip again :slight_smile: