Quote:
Originally Posted by bobski
An alt with a bad voltage regulator can hit 20V+. That doesn't happen often, but it would suck to add your 'duino to the repair bill. I would go for divide-by-5 at least. That should give you a 0-25V range with 0.024V steps. Way more precision than necessary.
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i would suspect that if the voltage regulator went out that this mod wouldn't really matter, your just modifying it to display the voltage, it would still be exposed to a voltage spike even if it didn't display it