I am trying to set up an ATmega328 with the RF7020 module so that I can send data from the ATmega to my computer.
I have the system working fine when I use the Arduino Uno board, it sends the data perfectly. However when I use the 'standalone' PCB I have built with the ATmega it is not sending anything. I have since tried it on a breadboard to see if that is the issue but no joy, I am getting the same results.
I have placed an LED on the TXD leg and it illuminates which I assume means that data is being sent?
This is the circuit I am using:
Is there anything else I need to do to the circuit to enable the rxd and txd legs to work?
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