Hi, I'm having some problems with the Vin supply. Actually I've never used it before, because I used to connect my arduino to the usb on the laptop. These days I was working on a project that requires 12 V and I built up my circuit as this one http://arduinoelettronica.files.wordpress.com/2012/03/rg…

Arduino UNO Vin troubleshooting

CrossRoads May 23, 2014, 7:32pm 4

Sounds like your regulator is shot.

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