I recently realized that the radio module I was using outputs 5V signals from the Do/Di to my Rx/Tx. This radio module has been running for days, and is still running and working. I know the Arudino DUE is limited 3.3V for digital I/O pins, but does that include rx/tx pins too?
Is there a way for me to check if I damage by board or perhaps the rx/tx pins? Everything is working as it should but I want to know if this is going to be a problem.