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1  Using Arduino / Installation & Troubleshooting / Re: ATMEGA2560 current sink ? on: November 14, 2012, 06:35:13 am
Thank you Nick, I don't have any camera nearby... but it's just like that:

So, your board sinks 71 mA, almost like mine, and so there shouldn't be any fault.
2  Using Arduino / Installation & Troubleshooting / ATMEGA2560 current sink ? on: November 14, 2012, 05:58:32 am
I have an ATMEGA2560 Arduino board which is sinking 75 mA.
It seems to me it's unreasonably high.

I check ed the datasheet of ATMEGA2560 micro and it shows a 20mA at 16MHZ clock. There's in addition the bootloader serial microcontroller which I assume to be sinking other 20mA.

There's still 35 mA missing... where do they go ?

The Arduino is not mounted in any board (which may be sinking) I have it in my hand with just the power supply. External supply at 16V.

Unused outputs (all of them) at ground.

Can someone help me ? I 'm pretty new at using Arduino, so I may be missing something big. Bear with me.

Greetings from Italy.
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