So, to give some feedback.
I do not have any positive results yet. The controller is built and finished, but I am not able to control neither my IC-725 nor the uBitx with it.
Nevertheless I am not sure if the problem is the loop controller. I wanted to use the Icom first to check if the tuner is okay,
but there seems to be a problem with the C-IV of my 725. There is only signal of 0.8V at the radio, while the controller shows about 2,5V at the DVM and my normal CIV cable does not work with the rig? anymore. Maybe there was a problem with the last thunderstorm, who also killed my power supply. I have to investigate.
But back to the uBitx:
The direct connection to controller did not work either, so I tried hooking up the PC with a TTL adapter to DO and D1.
I first used an older Prolific USB-TTL converter which turned out was good for nothing. I could not connect the the uBitx at all.
But then i remembered that I had another adapter at home which I had used to program some Arduino Pro Minis ealier . And it turned out, this was even a CP2102. And: It works, just as Jerry wrote earlier.
I can connect to the Ubitx with this adapter via the MM Manager and Ham Radio Deluxe.
I just do not know why it will not work with the loop controller,if connected directly. I chcked all the connections, pins, played along with the serial data speed, 8N1 and 8N2, inverted the signal and so on. Its crazy. No function. I need to find another rig first to make sure the controller works as it should.
