I'm running using a 3.5V input (because I have to power the arduino from a battery) and for some reason my Arduino won't recognize the 3.5V it as a HIGH input. Really not sure what is wrong here. Any help?

Arduino minimum high threshold?

Sketco October 24, 2017, 3:04am 5

Other pins have the same reaction. I'm running 6v into the DC jack so it's internally regulated. It's outputting 5V just fine.

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