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How much extra power does the Power Dock take over the Expansion dock?

  • Subject says it all. I can hook up an O2+ to a expansion dock and connect an Adafruit 1/2 inch 7 Segment display and a C-media USB sound card with a 5V stereo amp and both run the clock and play a sound fine.

    Take the same O2+ and put it in the power dock with a 3000mAh LiPo battery and the same USB power adapter and all the devices and when I play a sound the Omega crashes. I assume it is because of a power drop. I am using the 5V from the GPIO header for both the LED display and the power amp.

    Why would this work with the expansion dock and not the power dock and does this mean I will be unable to run the O2+ off a battery?


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