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Raspberry Pi
Raspberry Pi Forum F1/F2 polyfuses gone
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F1/F2 polyfuses gone

Former Member
Former Member over 13 years ago

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=63&t=8591&start=153

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  • Former Member
    Former Member over 13 years ago

    For those of you wanting the executive overview:

     

     

    jbeale wrote:I just received my 2nd R-Pi, this one from stock (yay MCM Electronics) which took just a week to ship from Ohio to California. I was pleased, but surprised to see that the USB fuses F1, F2 are now just 0-ohm jumpers (photo below). I was able to confirm they measure less than 0.1 ohms. Is this the new standard going forward?

     

     

    by Burngate

    You've obviously recieved a Chinese pirate copy - it won't have all the features a proper Pi would have, such as not working with some keyboards, and the like.

     

    by eben » 25 Aug 2012 10:34

    Yes. After seeing how many people have decided to modify their boards with zero-ohm links, and having done some safety and reliability testing, we've decided that the best course of action is to remove the USB fuses from the design. Right now they're linked out, but on a subsequent board revision the pads will be removed entirely.

     

     

    by liz » 25 Aug 2012 10:37

    And I'm impressed someone noticed so quickly!

     

     

    From Me Peg: Unlike on this Forum, I do not read every little thing on the org forum. . . BUT . . . is it just me or does this seem kind of sneaky? Or to put it another way. . . what happened to the "Open" in the open software/hardware world? Or did I miss the instructions on what to do with the two pi's I now own to make them more stable? No suggestions on buying the beagleboard Morgaine! image


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  • Former Member
    Former Member over 13 years ago in reply to Former Member

    > is it just me or does this seem kind of sneaky?

     

    Also makes you wonder what other unannounced changes

    have been made.  I notice that there haven't been any reports

    recently of X1 crystal problems requiring refrigeration, or any

    damaged TV's, so perhaps there have been some part substitutions

    there too.

     

    The last words out of user lostintime's mouth before he was banned

    yesterday turned out to be quite prophetic:

     

       "I find it unacceptable that the Raspberry Pi Foundation has yet to formally acknowledge that the Raspberry Pi has any problems whatsoever, meaning it's quite easy for people to purchase a Pi while being completely oblivious to the fact that it has a known issue in a critical area which will affect the majority of its users in some way and which may never be fixed. It will be interesting to see what changes are made to the Raspberry Pi's hardware in the future and how they are justified by the Foundation when this situation is considered."

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  • Former Member
    Former Member over 13 years ago in reply to Former Member

    > is it just me or does this seem kind of sneaky?

     

    Also makes you wonder what other unannounced changes

    have been made.  I notice that there haven't been any reports

    recently of X1 crystal problems requiring refrigeration, or any

    damaged TV's, so perhaps there have been some part substitutions

    there too.

     

    The last words out of user lostintime's mouth before he was banned

    yesterday turned out to be quite prophetic:

     

       "I find it unacceptable that the Raspberry Pi Foundation has yet to formally acknowledge that the Raspberry Pi has any problems whatsoever, meaning it's quite easy for people to purchase a Pi while being completely oblivious to the fact that it has a known issue in a critical area which will affect the majority of its users in some way and which may never be fixed. It will be interesting to see what changes are made to the Raspberry Pi's hardware in the future and how they are justified by the Foundation when this situation is considered."

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