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By ClCfe
#179548
Hello

Can we program this 3.3v board with a 5v usb2serial?
Because if nothing else is connected, I dont see the point of using a 3.3 ftdi converter

Apart from the 3.3v regulator, what are the other component differences with the pro mini 5v?
Thx
By jremington
#179583
It is possible to damage an ATmega powered at 3.3V by applying 5V signals to the inputs. That will send current through the input protection diodes, possibly causing them to burn out.