Mr. Borodin was asked for just one ping. I asked for just one bit. As can be seen this bit is about 8.64 us which gives up approx 115.7 kHz which is roughly in the ball park for 115.2 kBaud. As can be seen we are swinging the full 12v which may be an issue these days as everyone expects to see 5V so I am going to have to work on that little problem before connecting to a laptop. If anyone has some suggestions than I am open to ideas, possible some Opto Isolation or the like.