Arduino Ethernet - Power via Vin @ 8V ~140mA

Using Arduino Project Guidance
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Hello all,

I was just wondering what the max current I can put into the Vin pin. I am using a protoshield for my arduino and I have an 8V (from power supply) to 12V @ 50mA converter on my shield. However, this takes up a lot of excess space. I was wondering if I could drive my Arduino ethernet from the 8V power supply. I ran my code through most of its paces and I saw it draw ~140 mA. I was looking around and found this link http://arduino.cc/forum/index.php/topic,161810.0.html I believe it to mean that I can draw up to 1Amp if need be from the Arduino. Is this correct? I don't want to fry my Arduino.

Thanks,
Matt

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If you apply 8V to the Vin pin (or power jack) you can probably draw 2A or more of that 8V from the Vin pin, limited only by the current carrying capacity of the power traces on the Arduino board. You can draw about 900 mA from the +5V pin, limited by the current capability of the 5V regulator. You can only draw about 50 mA from the 3.3V pin, limited by the current capability of the 3.3V regulator.

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Thanks for the response,

So if I bought a stock Arduino Ethernet, I shouldn't worry about it because I am well within the 2A range, correct?

4

ukeri:
So if I bought a stock Arduino Ethernet, I shouldn't worry about it because I am well within the 2A range, correct?

Correct.

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