Author Topic: Lightning Cable off Buck Converter  (Read 700 times)

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Offline jc0rTopic starter

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Lightning Cable off Buck Converter
« on: January 25, 2020, 01:33:20 pm »
Hi all. I am trying to make a custom project that contains an iPad that uses the lightning connector. I am trying to charge the iPad from a buck converter that outputs the correct 5v. Opening up the lightning cable, i have connected the red to the 5v and the black to negative. However, whenever i plug this in it will not charge. I have checked the pinout and it is indeed outputting 5v across pins 5 and 1. Anyone know what i am missing?

Thanks

John
 

Online coromonadalix

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Re: Lightning Cable off Buck Converter
« Reply #1 on: January 25, 2020, 01:47:44 pm »
If i recall  in some Apple cable(s) you have id chip, if its not present it wont accept a charge
 

Offline NiHaoMike

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Re: Lightning Cable off Buck Converter
« Reply #2 on: January 25, 2020, 02:09:58 pm »
Short the data lines to each other.
Cryptocurrency has taught me to love math and at the same time be baffled by it.

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Offline jc0rTopic starter

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Re: Lightning Cable off Buck Converter
« Reply #3 on: January 25, 2020, 04:45:20 pm »
Many thanks NiHaoMike, worked perfectly. Thankyou
 

Offline PTR_1275

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Re: Lightning Cable off Buck Converter
« Reply #4 on: January 25, 2020, 05:07:42 pm »
Apple use different voltages on D+ and D- lines to tell the device how much current the charger can provide.

Have a google for the different usb data line voltages
 

Online wraper

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Re: Lightning Cable off Buck Converter
« Reply #5 on: January 25, 2020, 05:16:39 pm »
Many thanks NiHaoMike, worked perfectly. Thankyou
It worked but most likely charging will be very slow. Likely at 500mA current.
 


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