I am back! Yes, it has been a while. I have been travelling for a conference and I have been preparing my presentation, some paperwork and finishing other projects. It was amazing!! Coming back to the main subject, I know I did not explain much...
After assembling the transmitter PCB board, I connected my USB to the TTL UART programmer to the programming port. The connections are as follows: Programmer -----> PCB 3V3 ----> 3V3 Tx----> Rx Rx----> Tx GND---> GND After connecting the programmer to...