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Tuesday, March 22, 2011

Beagleboard: Power usage (current draw) for certain scenarios

Below are some unscientific tests done on my Beagleboard.  I hooked up my multimeter to determine current draw for several states.

Here are the results.

During Xubuntu boot, with 1x webcam and Wifi stick:

.500A to .900A

Boot, no attachments:
.300-.450A



Boot, no atachments but checking SD filesystem:
~.400A

At Xubuntu login, running motion, no USB Attachments:
.350A

At Xubuntu login, running motion, 1x logitech mp5500 webcam attached (100% load):
.550A

At Xubuntu login, running motion, 1x logitech C200 webcam attached (100% load):
.500A

At Xubuntu login, running motion, 1x logitech C500 webcam attached (100% load):
.525A

At Xubuntu login, running motion, 2x logitech webcams attached (100% load):
.600A


At Xubuntu login, running motion, 2x logitech webcams attached and usb wifi stick (100% load):
.850A


At Xubuntu login, running motion, 2x logitech webcams attached (~6% load):
.460A


Take all of the above with a grain of salt given the unscientific nature of the testing.

My test set up in action:

1 comment:

Christopher Dennis said...

Thanks!

This was a very helpful post for us. We were looking for an estimate of the maximum power consumption for a Wi-Fi card on a BeagleBoard.

We're especially appreciative of the fact you noted 100% load on the Wi-Fi card.

You saved us a measurement.

Best,

Chris