I am planning on powering a MKR1000 with an external 5V power supply attached to Vin and Gnd. What is the minimum amperage required to do this? Can I assume that the max 0.5 A from the USB 2.0 spec is enough, or do I need more? I have been looking for MKR1000-specific documentation on this, but haven't found any.
Thanks!
It should be more than enough as it is based on a low power ARM.
Arduino writes
"The USB port can be used to supply power (5V) to the board.
The Arduino/Genuino MKR1000 is able to run with or without the Li-Po battery connected and has limited power consumption."
Best to read up on the specs HERE
Gabriel_swe:
It should be more than enough as it is based on a low power ARM.Arduino writes
"The USB port can be used to supply power (5V) to the board.
The Arduino/Genuino MKR1000 is able to run with or without the Li-Po battery connected and has limited power consumption."
Thanks, Gabriel_swe. I was hoping to get some more detailed specs than this so I know how much headroom I have to play with, but I guess this will have to do.
Ballscrewbob:
Best to read up on the specs HERE
Thanks, Ballscrewbob. I've been all over that, and I am pretty sure it doesn't specify the board's power requirements anywhere.
It clearly states 7mA per IO pin in the spec there
The specs for the CPU are HERE and should provide additional info.
There is a page with battery life info too HERE
Ballscrewbob:
There is a page with battery life info too HERE
Excellent, thank you. According to that page, peak current draw for a wifi-enabled application is about 120 mA. Well under the USB 2.0 spec's 0.5A. (Would have been nice if they had put that information on the first page you linked.)