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Have a DFRobot Arduino Pro Mini.

Seems odd to me, but according to their specs the voltage regulator on board cannot handle more than 8-volt input. I can find no documentation, or have they answered me concerning what specific regulator they use on the board.

I would like to be able to run this board from a 9-volt battery. What is the best / most eloquent way to do this, keeping the smallest component footprint for a home etched board ?

An additional regulator ?? Could a diode clamp the voltage down ?

Many thanks in advance.

Gregory R. Pace
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I would make sure first that their claim ofb8v max is right. Look up the datasheet for the regulator and go from there.

If you have to go with 8v max, put a diode or two, or an led in serial should work most of the time.

For those where such an approach doesn't work, wire up an external regulator.

dannyf
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