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"Know It All "s I have a project that I have hit a wall on I need your guidance

G+_Brian Goossen

By G+_Brian Goossen,
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G+_Brian Goossen Newbie

G+_Brian Goossen

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"Know It All"s I have a project that I have hit a wall on. I need your guidance.

 

The plan is an "Apple Pi". A MacBook Pro (early 2008 A126C w/ bad mother board) with its guts removed and replaced by a Raspberry Pi 3.

 

I've found instructions online for the models newer and older than mine on how to solder a USB cable to the controller board to use the keyboard and trackpad. I can't find anyone who has figured out the connections on mine. Can anyone help? I don't even know where to start.

 

The attached photo is of the board.

There are 4 connections I need to find are: 5v+, data -, data +, ground,

 

I have figured out the LCD with a controller I found on eBay. I'm also currently working on connecting it to the Mac battery.

 

Thanks!

PS. If it wasn't for Know How I would never have even started a project like this. Thank you all. It's pretty fun.

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G+_Daniel Armstrong Newbie

G+_Daniel Armstrong

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Here's how I look at it, start probing around with a multimeter in ohms or continuity mode. It looks like you have a ground plane test point next to where it says U5, a 3.3v test point next to U5 itself, and maybe a SMD LDO 3.3v linear regulator IC marked VR1. The 5v input will go to one of the 3 pins of that LDO and you have the test points to check for solid continuity to the other 2 pins.

 

Just hope that it is standard USB, Windows laptops continued to use PS/2 for the internal pointing device even after USB had been out for many years.

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