Tiago,
VSS gives pulses only so it doesn't matter if these are at the level of 12V 8V 7V or any other untill these pulses are above 5V because that's what Arduino reads.
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Quote:
Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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