F1/F2 polyfuses gone

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!

Peg Wagner wrote:

 

by liz » 25 Aug 2012 10:37

And I'm impressed someone noticed so quickly!

 

From Me Peg: ... is it just me or does this seem kind of sneaky?

In the F1/F2 case, perhaps RasPeople didn't announce the change because they didn't want 10,000 cranky customers complaining that they want the Ohmless version, adding to distributors' confusion.

So for their next trick, perhaps RasPeople will modify the 1V8 connection to separate out the LAN9512 and its caps -- and they won't tell anyone about that one either.  The 1V8 change will be really hard to notice. 

Peg Wagner wrote:

 

by liz » 25 Aug 2012 10:37

And I'm impressed someone noticed so quickly!

 

From Me Peg: ... is it just me or does this seem kind of sneaky?

In the F1/F2 case, perhaps RasPeople didn't announce the change because they didn't want 10,000 cranky customers complaining that they want the Ohmless version, adding to distributors' confusion.

So for their next trick, perhaps RasPeople will modify the 1V8 connection to separate out the LAN9512 and its caps -- and they won't tell anyone about that one either.  The 1V8 change will be really hard to notice.