Choose HW Serial Over SW Serial Whenever Possible? Moderators: adafruit_support_bill, adafruit

[Agriculex]

I'm using my custom made (Arduino Mega-based) PCB to interface with the 3G Fona Module. It uses the standard software serial and works fine.

However, looking at the redesign of my custom PCB, I noticed two of the three extra Hardware Serial aren't being used. As a result, I'm thinking of connecting the 3G FONA to it instead.

So my question is what's the main advantage if I switch over to hardware serial? Is it just more stable and faster communication with the 3G Fona?

[adafruit_support_bill]

Hardware serial has much less overhead than software serial. It is potentially faster and there will be less chances for dropped characters.

[Agriculex]

Thanks for the info. I will switch to HW serial then.