I typically use series Rs in every I/O line of value 220-330 ohms. This way
the Arduino is saved from 90% or so of the usual "accidents" in connecting
signals to pins, shorts, overvoltages, output-to-output, etc.
I typically use series Rs in every I/O line of value 220-330 ohms. This way
the Arduino is saved from 90% or so of the usual "accidents" in connecting
signals to pins, shorts, overvoltages, output-to-output, etc.