Battery power arduino Yun

Official Hardware Classic Yún
1

I'm working on a project to implement a security camera to built with the Arduino Yun board. I'm currently following the tutorial in Adafruit. Introduction | Wireless Security Camera with the Arduino Yun | Adafruit Learning System

I am powering the board using 4 AA batteries(1.5V each) which are connected to the USB port for safety. I have the camera connected to the other USB port to interact with the board. The problem is that the camera does not take a picture when using the batteries. Only when I connect the board to my laptop. The camera I'm using is the following. http://www.amazon.com/Logitech-960-000585-HD-Webcam-C310/dp/B003LVZO8S/ref=sr_1_1?ie=UTF8&qid=1416037381&sr=8-1&keywords=logitech+c310

My guess is that the camera is drawing too much current but I don't know how much and I can't find a data sheet that contains the information. Does anybody have any information on this?

2

in general the Yun is not suitable for use with batteries. The current consumption is upwards of 250mA ignoring your camera. Most of the load is Linux and wifi.

having said that it should work for a short time. Try attaching 6 batteries through a voltage regulator to reduce it to 5v, and feed it via VCC.