I have tried talking to my robostx on its UARTs every way I can think of. I have tried using a serial adapter (on both uarts) and I have tried bridging the gumstix/robostix uarts together as mentioned on the robostix ISP page and then using minicom on the gumstix as well as Dave H's sertest. With the i2c-io program of Dave's I would expect to see some output but nothing. I do have some form of connection because as soon as I hit return in either minicom or sertest the i2c-io program on the robostix stops blinking the LED. Anybody know what I've missed?