That is indeed what I was suggesting because as has been said, the Uno has no direct control over the CTS or DSR pins of the interface
The Morse key is very likely only acting as a switch, probably de-bounced, to toggle the values on the RS232 pins
That is indeed what I was suggesting because as has been said, the Uno has no direct control over the CTS or DSR pins of the interface
The Morse key is very likely only acting as a switch, probably de-bounced, to toggle the values on the RS232 pins