Hi,
is it save to supply Arduino Due with 7V/1A from an external source?
Thank you for your help!
Andreas
Hello hecker,
Up to 12V is OK. Please see...
More than 12VDC to your Arduino Uno and someone is going to get hurt
Regards,
p
Thank you for your quick reply. I am wondering about the maximum DC. I couldn´t get an exact answer about that. So, what do you think ist the maximum number of As i can charge the Due with?
Regards,
Andreas
The official Arduino site states Input Voltage (limits) between 6 to 16V. Regarding that, I believe 16V can be OK for the DC-DC regulator (LM2734Y) that supports up to 20V but, as it is explained in the UNO link I gave you, the max input voltage of the Op-Amp (LMV358) is 5.5V. With the voltage divider (100K/100K) the maximum voltage should be 11V. That is why I said that more than 12V can harm the Due. The Arduino Due schematic is not too clear so I may be wrong but I'd never expose my Dues more that that.
More than 12V? Remember that Due's heart is SAM3X8E which means 3.3V world.
Regarding current, Due is a low consumption device (few milliamps). Due will take only a little slice of current no matter if you offer him a whole cake. But...it never hurts to use a fuse just in case.
p