Raw current clarification

Please can someone tell me what the maximum current you can draw from the Vin pin of a v3 UNO if the power is supplied through the DC socket? I've read somewhere that the SM5100B shield draws more than this pin can supply and therefore there is a danger of burning out the UNO board. Nothing is mentioned on the Sparkfun website about this so I'd be interested to know what other people have done.



There is a protection diode in line with the power jack. It's rating is 1A, so the maximum you can pull out of the Vin pin is 1A.

Great, that answers the question. I'll have to use a 2-3A source straight into the 5V pin on the shield.

Thanks very much.