I am a CW op, and trying to get HDSDR to work. I am going to hack a USB keyboard for contact closures on the enter key, using Radio output jack- that will probably work OK. I'd love it if the Iambino had a PTT activation output. The current HDSDR uses space bar as a latching TX. I am planning on adding to the Iambino code to implement the function in semi breakin fashion- TX will get toggled on (eqiv to a keypress- at the spacebar) at the first dit or dah and "kept alive until 1/2 second has gone by without any input. then the TX gets toggled off same way.
The other idea is using CAT>HDSDR and toggling a pin on the RS232- it remains to be seen if the pin is held high during the entire sending or if it is bang bang again.
I think there are 2 I/O pins uncomitted on the Arduino.
Thoughts, anyone?
73
DE KB3CUF