Go Down

Topic: When to write pin high/low? (Read 317 times) previous topic - next topic

Riccarr

Hello

Basic question.

During the course of looping my program and performing digitalWrites to pins, if I write a HIGH to a pin so that it turns on a transistor, do I need to keep writing HIGH each time through loop to maintain the pin in its HIGH state thus keeping the transistor switched on?

Or do I need to only write to the pin when I want to change its state?

Thanks
Eric


holmes4

you only write to change its state.

Mark

fungus


During the course of looping my program and performing digitalWrites to pins, if I write a HIGH to a pin so that it turns on a transistor, do I need to keep writing HIGH each time through loop to maintain the pin in its HIGH state thus keeping the transistor switched on?


No.
No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

robtillaart

but it doesn't hurt either - except for a few CPU cycles burned
Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

Go Up