Iphone charging...

Hello, my name is Martin
I have a very big problem with a 5v usb boost circuit. When i connect the circuit to the power, the led lights up, but no power... to iphones... everything else works, just not iphones. i already tried shorting the data ports with the 5v pin, AND THAT USED TO WORK, but not now!!!??

PLEASE HELP

I have now tried with adding some resistors to data+ and minus, still nothing

HELP!!!

0 gadget.iom over 10 years ago in reply to mcb1

mcb1 wrote:

This looks like the same cheap USB charger I posted here.

Cheap USB Chargers

It does indeed.
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0 clem57 over 10 years ago in reply to Robert Peter Oakes

Peter Oakes
I really doubt the original person understands even Ohm's law.
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0 Robert Peter Oakes over 10 years ago

I doubt this board has any intelegence whatsoever so shorting pins or adding resistors will do it no good, this is going to be a cheap boost regulator circuit (Chip I assume is on the other side of the baord) and is simply banging out 5V ish on the USB connector
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0 mcb1 over 10 years ago in reply to gadget.iom

This looks like the same cheap USB charger I posted here.
Cheap USB Chargers

Mark
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0 Problemchild over 10 years ago in reply to shabaz

So a good biz plan works around making something that is totally superfluous but cool and is merely a play on an existing device or technology and totally and utterly avoids at all costs any area or product which may cause fire, maiming,death or worse still Litigation!!

A USB powered dancing Lemon for example!!
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0 Problemchild over 10 years ago in reply to shabaz

'nuff said ...So Hipster
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0 shabaz over 10 years ago in reply to Problemchild

John Alexander wrote:

If you are going for this Market then the money comes from the Hipster component not the guts so I would not even bother doing this yourself and focus on the cool black rimmed glasses bit of the project
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0 Problemchild over 10 years ago in reply to shabaz

If you are lucky you'll just avoid all contact with the Law. However if you manufacture enough to make a living I think that this is almost inevitable and as you say you are responsible end of even if you are the innocent end vendor ... assumption is the mother of all ...$%^ ups!
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0 Problemchild over 10 years ago in reply to shabaz

Hi Shabaz, I'm not sure the market will stand another cheap charger.
Fortunately the ixxxx market seems to be particularly rich(literally) in "hipster" devices, in that case you can charge a lot more than the generic product. If you are going for this Market then the money comes from the Hipster component not the guts so I would not even bother doing this yourself and focus on the cool black rimmed glasses bit of the project and buy a charger module from a reputable source for cheaps!

John A
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0 Problemchild over 10 years ago in reply to shabaz

Another reason to design your devices to be tolerant of the biggest load of rubbish you can get. If you can do that and still operate correctly and safely then you are a winner and the design is likely to work wherever it's sourced or built. Unfortunately that takes more skill and time, both of which represent money that a project might not have.
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