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Author Topic: How to Use digitalRead in Arduino?  (Read 201 times)

agalloway

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How to Use digitalRead in Arduino?
« on: March 21, 2025, 02:27:42 PM »
Hi everyone,

I’m working on an Arduino project and need to read the state of a push button using digitalRead(). I’ve connected the button to a digital pin, but I’m unsure about pull-up/pull-down resistors and how to properly detect HIGH and LOW states. How to Use digitalRead in Arduino? - Technetron Electronics provides some information, but I still have questions.

Should I use an external resistor, or is the internal pull-up sufficient? Also, how can I debounce the button to avoid false readings? Any example code or best practices would be really helpful!

Thanks in advance!
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