Arduino am Auto-Rücklicht betreiben

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hallo,
ich würde meinen arduino gerne meinem auto rücklicht betreiben. eine autobatterie gibt ja bekanntlich 12v her. sind hier zusätzliche maßnahmen erforderlich (schutzmechanismen, widerstände) oder kann ich den vin pin und erde vom arduino wirklich ganz simpel mit dem rücklicht verbinden ? es kommt mir zu einfach vor  :~

1) willst du mit dem arduino im auto machen. eingriffe in die autoelektronik können schnell mal die betriebsgenemigung bzw bei unfall den versicherungsschutz kosten.
2) das bordnetz ist stark gestört. von positiven spannungen bis 100 v und negativen impulsen von 100v und hochfrequente störungen ist alles da.
grüße uwe


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