I am trying a loopback using Putty on an FTDI board (this one: http://www.oddwires.com/ftdi-ft232rl-usb-to-serial-adapter-module-usb-to-rs232-for-arduino/).
I am not using an Ardiono for the L-B test, just shorting TX/RX directly on the module itself.
Here are my results: . With each keypress, the RX light flashes once. . The TX light does not flash at all. . There is no output in the Putty terminal screen.
Does this indicate a bad board? I have also tried it in Serial Monitor and nothing is echoed back when pressing "Send."
Reason I am testing is because I can not get this FTDI board to work to upload sketches (Verified correct COM port & board selected, drivers installed OK, same ATMega chips can be programmed in my UNO, upload board resets board but times-out giving the dreaded "out of sync" error) so I am beginning to think it may be the FTDI module that is bad.