If "no output on either board will go over 5v" then how can "digital input being over 50 " occur?
hi i need to take what is the output for a led on a comemrcially purchased board, disconnect the led and feed that into an arduino pin, so that i can put a state indicator on an LCD and thus monitor the state of varios boards at the same time through the LCD.no output on either board will go over 5v
my question is two fold, 1 can i use digital read to get the state of each input. and then use an if statement show the indicator based on the digital input being over 50 for example,
2, what should i do to protect the arduino input pins against over voltage?
QuoteIf "no output on either board will go over 5v" then how can "digital input being over 50 " occur?I think that should have been "analogRead() value being over 50".