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Topic: PIN 13 as INPUT_PULLUP burned power supply (Read 13 times) previous topic - next topic


Quick question, I have configured pin 13 as INPUT_PULLUP and connected switch to it without resistor.
After boot arduino started to boot continously, never got out of setup.

I quickly discovered that power supply gave 15V instead of 12V (Im using DC-DC 5V regulator) and regulator output was fliqering from 1V to 5V.

After changing pin 13 to normal OUTPUT it hanged after a while, so I changed PS and problem was solved.

But is it possible that pin 13 could destroy power supply? Output of it is still 15V.


The pin itself, no. A bad connecting can. Was the button connected between GND and pin 13 of did you connect it between the power supply and pin 13. The last can kill things but the Arduino is most likely...

PS, pin 13 is shared with a LED on a lot of boards and might be hard to pull high. You didn't told us which Arduino so...
Use fricking code tags!!!!
I want x => I would like x
I need help => I would like help
Need fast => Go and pay someone to do the job...

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