Viewing 5 posts - 1 through 5 (of 5 total)
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  • blue
    Participant
    Post count: 6

    I have the ControlBlock connected via a GPIO cable.
    Which GPIO Pins are needed for the ControlBlock and which aren’t?
    Just the I2C pins and one Ground + one 5v pin?

    I’m sorry if this is documented somwhere, but i can’t find it…

    benwlson
    Participant
    Post count: 63

    I would like to see some more information about the ControlBlock as well. I am about ready to order one, but I also had a few questions.

    I also plan to connect it to my pi with jumper wire instead of mounting it directly. I read in the documentation that there is a slight voltage drop with in the power circuitry, so you need a good power supply. I was planning to use a 5V 6A power supply like this:
    http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_323425_-1

    Will using the ControlBlock to power the pi affect my ability to overclock? Will it affect my ability to power controllers/mouse/keyboard/thumb drive/wifi from the USB?

    petrockblog
    Keymaster
    Post count: 1828

    I have added information about the used pins of the ControlBlock. You can find it at http://www.petrockblock.com/2014/12/29/controlblock-power-switch-and-io-for-the-raspberry-pi/#Hardware_Interfaces.

    Does this answer your question?

    petrockblog
    Keymaster
    Post count: 1828

    [quote=116759]
    I also plan to connect it to my pi with jumper wire instead of mounting it directly. I read in the documentation that there is a slight voltage drop with in the power circuitry, so you need a good power supply. I was planning to use a 5V 6A power supply like this:
    http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_323425_-1

    Will using the ControlBlock to power the pi affect my ability to overclock? Will it affect my ability to power controllers/mouse/keyboard/thumb drive/wifi from the USB?
    [/quote]

    The MOSFET that the ControlBlock uses is the IRLML6402 (http://www.irf.com/product-info/datasheets/data/irlml6402.pdf). It is rated for a maximum of 3.7 A.
    The ControlBlock works with the various overclocking configurations that can be selected from within the rasps-config tool.
    If your other USB devices work well is hard to say for me since that depends on their power consumption behavior.

    Hope that helps?

    blue
    Participant
    Post count: 6

    petrockblog, thank you for the quick reply!

    I have the ControlBlock revision 1.x, so i have two additional questions.
    Does Revision 1 need the 3.3V pin too? Or any other pins? (GPIO 04, pin 07 as clock for example?)
    I have tested it without the controlers, (only pin 2,3,4,5,6,9,11,12) and the powerswitch function seems to work…

    Also, what happens when i connect another device to the 5V pins of the PI?
    (I plan to connect a small fan for the cpu for overclocking)

    PS: keep up the awesome work!

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