Hello. If I am using this board with an BMP085(minimum 1.8v like atmega328P to maximum 3.6v) pressure sensor and CR2450 battery witch is 3v, should I connect the battery to VCC or RAW going in the voltage regulator. I want the battery to work as much as it can .... How can I use a led on Arduino P…

Arduino Pro Mini 3.3v RAW vs VCC

levardar January 24, 2013, 9:26am 3

Thank you Nick for you advice!

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