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[Info]Making/Using a Factory Cable

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By SikYou, Senior Member on 15th December 2011, 04:49 AM
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There is a lot of information floating around about the factory cable but there doesn't seem to be a thread dedicated to the topic. I bricked my device today so I need to make a factory cable. I tried making a cable but I f'd up the soldering job so I am awaiting delivery of a breakout board. I just wanted to gather some information here on the topic because there seem to be a lot of bricks popping up around here. So for now I am going to post what I know and ask a few questions here and there so that I can get my cable done and hopefully help someone out along the way.

When I started messing around with soldering a jumper from pin 1 to pin 4 i melted the connector, blah, blah, anyway, I screwed it up. Hopefully I will have more luck with the breakout (see below).

From what I understand, using the cable is a simple a plugging it in so I guess that part is self explanatory for now.

I got most of my information about the cable and how to make it from here. Lots of good info with pics and diagrams.

Someone in these forums recomended using this breakout board. I ordered 2 of them today so I will let you guys know how it goes when they get here.

My one big question is about the the jumper from pin 1 to pin 4; I read that some people are using a resister and I am unclear as to where the resister is being used and the specs of the resister. Please enlighten me

I might add some pics to this thread just for fun. If you have built this cable please jump in a post any information that might help.

Thanks

BTW-You can buy a cable here but I have yet to see them listed as "in stock"
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15th December 2011, 06:35 AM |#2  
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I'm interesting to how correctly build this cable...
15th December 2011, 02:57 PM |#3  
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I simply used a jumper wire. No resistor used. I hear a 1k can be used as a precaution, but is not necessary. Without the resistor, it works like a champ. I turned off the Kindle, Plugged in the "Factory cable", and it went directly into fastboot.

PIN out is as follows on the SparkFun Breakout board:

VCC: RED
D-: White
D+: Green
ID: Jumper RED
GND: Black
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15th December 2011, 03:14 PM |#4  
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Quote:
Originally Posted by MayfairDROID

I simply used a jumper wire. No resistor used. I hear a 1k can be used as a precaution, but is not necessary. Without the resistor, it works like a champ. I turned off the Kindle, Plugged in the "Factory cable", and it went directly into fastboot.

PIN out is as follows on the SparkFun Breakout board:

VCC: RED
D-: White
D+: Green
ID: Jumper RED
GND: Black

Thanks a ton! I was looking confirmation that this wod work without a registered.

So I assume you fixed you device or accomplished whatever it was that you where trying to do?

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15th December 2011, 03:29 PM |#5  
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hahaha...Nope I didn't have anything wrong, but before I went modding, I wanted to be sure I could get into FastBoot if I messed something up. I have tested and made sure that I had Fastboot commands, so I know it works.
15th December 2011, 04:09 PM |#6  
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Quote:
Originally Posted by SikYou

There is a lot of information floating around about the factory cable but there doesn't seem to be a thread dedicated to the topic. I bricked my device today so I need to make a factory cable. I tried making a cable but I f'd up the soldering job so I am awaiting delivery of a breakout board. I just wanted to gather some information here on the topic because there seem to be a lot of bricks popping up around here. So for now I am going to post what I know and ask a few questions here and there so that I can get my cable done and hopefully help someone out along the way.

When I started messing around with soldering a jumper from pin 1 to pin 4 i melted the connector, blah, blah, anyway, I screwed it up. Hopefully I will have more luck with the breakout (see below).

From what I understand, using the cable is a simple a plugging it in so I guess that part is self explanatory for now.

I got most of my information about the cable and how to make it from here. Lots of good info with pics and diagrams.

Someone in these forums recomended using this breakout board. I ordered 2 of them today so I will let you guys know how it goes when they get here.

My one big question is about the the jumper from pin 1 to pin 4; I read that some people are using a resister and I am unclear as to where the resister is being used and the specs of the resister. Please enlighten me

I might add some pics to this thread just for fun. If you have built this cable please jump in a post any information that might help.

Thanks

BTW-You can buy a cable here but I have yet to see them listed as "in stock"

A resistor is the "safe" route. Mine doesn't have one at all and woks flawlessly. You just need a resistor large enough to simulate a short to the device. I imagine anything above 250k would be more than enough.

But as I said before I have used mine more than most people probably have while testing TWRP, I don't have a resistor and it works fine.

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15th December 2011, 05:01 PM |#7  
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Was just thinking. If you used a female breakout board with a male breakout board you could essentially ground the male boards ground to the male boards vcc. And the female boards ground to the male boards ground as well.

This way you could leave vcc hanging (capped of course) from the female source (computer) side.

Aditionally you could put in a dual pole switch between ground from the the target (kindle side) and vcc on the target side that would toggle between ground on the target side and vcc on the source side. Essentially eliminating the need for two cables and letting you switch from a factory cable to a normal cable with the flip of a button.

Hope this sparks some good conversation :).
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15th December 2011, 05:12 PM |#8  
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I built one with the sparkfun breakout board. Piece of cake if you have some soldering skillz. You might melt something or make a mess if you haven't soldered anything before so I recommend practicing on something else first and/or watching some "how to solder" youtubes.

I configured mine with a female header in the pin 4 location, and a 400 ohm resistor coming off of pin 1. If I want to fastboot, I put the free end of the resistor into the female header. To use the cable like an ordinary USB cable, I just pull the free end back out. It's kinda nice to use the same cable for everything.


RE: resistor value. Since any value up to 1K ohm reportedly works, I thought I might as well use one vs just running a direct short. The higher the value of your resistor, the greater the chances that it won't work though. I used the one I did because it was less than 1K ohm, I had it on hand, and it's a higher wattage resistor with thicker wire that fits nicely in the female header.

FWIW, YMMV.
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17th December 2011, 12:31 AM |#9  
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Quote:
Originally Posted by pyrostic

Was just thinking. If you used a female breakout board with a male breakout board you could essentially ground the male boards ground to the male boards vcc. And the female boards ground to the male boards ground as well.

This way you could leave vcc hanging (capped of course) from the female source (computer) side.


Hope this sparks some good conversation .
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This will NOT work, as the female breakout boards from Sparkfun does NOT have a breakout trace for pin 4 present. Only the male breakout boards have all 5 pins/traces needed. I've purchased hundreds of both and sold thousands of download mode JIG's for Samsung phones, and was forced to modify the female breakout boards to include a pin 4 trace for special projects of mine. I do not know if they since added the trace or not and its been over a year now since I asked for this feature.

Is there even a market for these factory cables?
Last edited by SkOrPn; 12th August 2015 at 09:56 PM. Reason: International Changes
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17th December 2011, 02:24 AM |#10  
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Quote:
Originally Posted by SkOrPn

This will NOT work, as the female breakout boards from Sparkfun does NOT have a breakout trace for pin 4 present. Only the male breakout boards have all 5 pins/traces needed. I've purchased hundreds of both and sold over 1300 download mode JIG's for Samsung phones, and was forced to modify the female breakout boards to include a pin 4 trace for special projects of mine. I do not know if they since added the trace or not and its been over a year now since I asked for this feature.

On the other hand, if there was a market for it, I could manufacture special mini to micro data/charger adapters made specifically for this task. But the user would still need a standard mini usb data cable with all 5 pins/wires present (everyone should have one lying around somewhere).

Something like this could be purchased in bulk and then modified on demand. These are easily taken apart and reassembled. I do this daily 7 days a week so its easy for me.
http://www.alibaba.com/product-gs/39...r_Charger.html

Is there even a market for these though, is my question?

Probably not much of a market. I think most of us are attempting to make our own. I'm sure you could sell a few but I wouldn't quit your day job ;)

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17th December 2011, 03:20 AM |#11  
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Last edited by SkOrPn; 28th June 2012 at 04:15 AM. Reason: Deleting my Cable Ad

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