Quick question on button states

Projects General Guidance
1

Hey there forum (first post of probably many),

Simple question: I'm reading most places on the web for standard input buttons generally say that when a button is pushed, it should send a HIGH voltage/variable for the program. But after double checking every single thing, it seems like this is reversed on my Arduino R3. Can someone confirm this so I'm not going absolutely crazy here? If this is the case, where button push means voltage gets sent as LOW, why was this done?

2

The quick answer is it depends on how you have the switch wired whether it sends the attached pin high when pressed or low when pressed. I recommend this for reading:

3

Thank you so much for that article. I need to learn more on transistors, because that was my issue. Tremendous help!

4

My favorite concise transistor article: Using Transistor as a Switch | ermicroblog