I uploaded a simple sketch to test serial comms. It just sends out "Hello World" continually. It works fine, got my RS232 module and serial cable sorted.
I cannot now upload any other sketches to the Uno due to the transmit pin continually sending out the "Hello World" message. The program does not have any delays and the transmit line starts up straight away.
I have tried resetting the Uno at different times whilst trying to Compile/Upload but have not had any luck yet.
Does anyone know a way around this issue other than buying another controller?