Quote:
Originally Posted by Ron99
You are correct. I am still figuring out the Arduino and assumed it needed 5V in but it can take 12V in as it has it's own voltage regulator on board. So I can use a single 12V supply for the fans, the Arduino and then with a voltage regulator to supply the PWM. I don't see a 9V out on the Arduino, just a 3.3V and 5V outputs.
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there is a pin labled Vin it can be used for a hardpoint voltage supply or you can take off there to power something else and it will be what ever power you are feeding your board with.. so if you are using a 12v adapter (which is probably what you should use. it will be 12V out. then you can step it down to 10V as you lose about 0.7 of a volt. so that out with a 12V adapter will actualy give you about 11.3V
Steve
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