Bongofish

Screen Tablet malarky => Tutorials and useful knowledge => Topic started by: Drewid on December 17, 2006, 10:51:22 PM



Title: All you need to know about FFC's (Flat Flexible Cables)
Post by: Drewid on December 17, 2006, 10:51:22 PM
Here are a few Tutorials/Things about FFC's.  These were merged together by Switz, but please give the appropriate credit to the author.  If you need help, state what you need help with, not just, "I NEED HELP."  Thank you. -Switz/Drew/All the Bongofishians

FFCs are the very thin flat cables commonly used around LCD screens.  They are usually grey or orange, and very tiny 'printed' copper tracks rather than wire.  The number of tracks varys from a few up to 40.  If you take a digi photo of the board and look at it close up you should see a number which is the number of the tracks, (or you can always count them).   Divide the width of the cable by the number of tracks  to give you the pitch, usually 0.5mm or 1mm.  For example a 10mm cable with 20 ways will have a .5mm pitch.

These clips vary in size from very very small to quite large, depending on the size of cable they are holding. 


These are not the same as molex clips for holding ribbon cables or multi-wire cables. Those require a different strategy.

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Title: Re: FFCs - Flat Flexible Cables
Post by: Drewid on December 17, 2006, 11:22:29 PM
Opening a FFC (ZIF) Socket

If you've never met them before Flat Flexible cables seem to be impossible to undo and easy to break, once you know the trick it's very very easy.

The cables use a ZIF socket,  ZIF stands for Zero Insertion Force,  the clue is in the title - Zero Force. If you are having to push or pull anything it's probably not right.

The trick is that the sockets they plug in to have clips that hold the cable in place. The clips are often a different colour to the rest of the socket, there are two main types that I've seen, the door and the slide.





type 1 the door.
This acts like a tiny hinge, insert a fingernail under the edge and pull gently, it just pops right open, then the cable can be slid out.
putting the cable back in is just the reverse procedure. insert the cable as far as it will go, once it is nice and snug shut the flap and it is held securely in place.
 

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Title: Re: FFCs - Flat Flexible Cables
Post by: Drewid on December 17, 2006, 11:24:59 PM
Type 2 is the slide.  I've seen different versions of this one but they act in the same way.

There is a tiny clip on each side of the cable holder. Sometimes you can see that they are linked, on some it is under the cable,  They both work the same way.      Put a fingernail into the crack on each side and pull gently,  the clip will slide away from the rest of the socket by a small amount.   The cable will then slide easily out.

Replacing the cable is the reverse, but it can be a little more fiddly than the door type clip.   Slide the cable into place and squeeze the two sides back into place.   Sometimes pushing the cable in will catch on the slide and and it will jam, take it out and start again.   holding the clip open with one hand while sliding in the cable with the other.      To do this and hold the cable may require one more hand than you are equipped with, but most will work with a couple of attempts.


Title: Repairing torn FFCs
Post by: Drewid on December 18, 2006, 06:03:58 PM
Repairing Torn FFC's

It's possible to repair a torn FFC with sandpaper and an extension kit. (I've not tried this yet but read it somewhere).

Cut it neatly across.

Stick a bit of insulating tape about 1/4" (5mm) from the cut end. 

Sand "along the grain" gently till you clean off the insulation between the tape and the end. Not too much or you'll remove the tracks as well. 

Gently remove the tape starting from the non-sanded side.

Pictures to follow. (Might take a couple of days)  ::)


Title: How to calculate what FFC you need and what its pitch is
Post by: Switz on February 03, 2007, 05:42:54 PM
How to calculate what FFC you need and what its pitch is

Ok, pretty simple, but saw a thread and realized I also didn't know how at first so here we go.

First, take a macro (your camera may have a setting called macro or magnifying glass, if not, try the best settings) shot of the end of one side of the FFC cable:
(http://f.exoload.com/207/DSC01052.jpg)
(It is a big picture so it is easier to count, I will keep the next few smaller)

Then, go into mspaint or photoshop or something and paint each black line while you count:
For each black line, that means one pin
(http://f.exoload.com/207/FFC.jpg)

Now, check the width of the cable(DO NOT MEASURE THE CABLE IN THE MIDDLE, MEASURE THE HEAD WHERE THE BLACK LINES ARE):
(http://f.exoload.com/207/FFCa3fdy.jpg)


Now, it is all about the math.

20 pins, 10mm         10 divided by 20 = .5      It is a .5 pitch!!!



Pretty simple isn't it?


Sorry, for the pics looking bad, had to do it  in paint cause photoshop was being all pissy


Title: Re: FFCs - Flat Flexible Cables and the unclipping thereof
Post by: enixidfrag on October 18, 2007, 05:58:09 PM
Nice tutorial

please note most commonly in my experiance you see type 1 in electornics there really VERY easy to use just use an exacto knife to open the latch :D


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: theotocopulitos on August 07, 2009, 08:26:49 PM
Drew, would it be possible to reupload the pictures for this tutorial, please?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on August 08, 2009, 12:02:09 AM
All the external images are pretty much uncontrollable -- for example, most of the images in this thread are from "http://f.exoload.com" -- nothing to do with bongofish -- you would have to try to contact the one that posted the images.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on August 08, 2009, 01:28:08 AM
I was only talking about the external images until I saw some post attachments -- maybe that is what you were referring to?  ;D  --  yeah -- those I have some hope...  Are they just "lost in the system" or really deleted Drew?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Drewid on August 08, 2009, 05:40:35 PM
Lost in the system but still there somewhere.  Hopefully we can rescue a load of the missing images after the forum moves to the new server. I'm working on that right now,  it but it might take a few days


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: theotocopulitos on August 08, 2009, 07:38:52 PM
Thanks, great!  ;D


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: vash.3d on February 09, 2010, 12:40:35 PM
Hi all!

I'm starting to build my homemade cintiq.
I've got all I need except for a ffc connector.
I've searched on diy-beamer, but I can't find it there:
there is the cable but not the connector.

i need a 20 pin 0.5 pitch connector

other place to find it? (in europe?)


thanks in advance.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Angrysunshine on April 02, 2010, 08:40:27 PM
Sorry to post about this in your post, but I can't start a new topic and don't know how to fix that (PM'ed Switz, but no reply after a few weeks) and this is related to ffc's, broken ones anyway.

I have a ffc that is/was soldered directly to the board. It was old and stale and it cracked (right where it is connected to the board). It's half off now. I have an image of it, but am not sure how to insert it.

Is it fixable? Since it attaches directly to the board, is it still possible to attach a new one? What kind? etc.

I'm very new, if you couldn't tell, but have been reading this forum for a while.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: cellofaan on April 02, 2010, 10:16:30 PM
You can start a new topic after making 1 reply in an existing topic.

The only way to connect a new ffc cable is to solder it directly to the board.
You could try to vile down the broken connections, and just press the cable against them. If they make good contact, it will probably work, but it isn't easy to fix it in place and keeping the pressure on it.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Angrysunshine on April 05, 2010, 02:04:53 PM
@ cellofaan

Thanks for responding so fast. I'm going to start a new post about this on the Heyaaaalpppp board so I don't fill this one with my issues. It's called "broken FFC". I do have followup questions if you'd be willing to keep helping me out.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: HippieSmell on February 12, 2011, 08:09:24 PM
I found this link helpful. Scroll down to the ffc section.
http://www.digikey.com/Suppliers/us/FCI.page?lang=en&WT.z_ptm_structured=Supplier%2520Logo (http://www.digikey.com/Suppliers/us/FCI.page?lang=en&WT.z_ptm_structured=Supplier%2520Logo)


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Trashie on May 16, 2011, 03:44:56 AM
Warning: I've not tested any of the following.They are just ideas!

Maybe this can be helpful, in desperate cases:
http://cgi.ebay.com/FPC-FFC-ZIF-BTB-flex-cable-adapter-converter-Z-/160502053503?pt=LH_DefaultDomain_0&hash=item255eaafa7f (http://cgi.ebay.com/FPC-FFC-ZIF-BTB-flex-cable-adapter-converter-Z-/160502053503?pt=LH_DefaultDomain_0&hash=item255eaafa7f)
Using the method described before (repairing torn FFCs) by Drewid, it'd be possible to cut an FCC in two, and make it longer using standard cables and two of those boards.Btw, i dont really know how the FCC is supposed to be attached to the board, but maybe somebody can figure it out (without involving duct tape :-D)

One problem i see with the board is that it looks a bit big.For a smaller board, a possibility is to "print" two custom pcb with the required number of pins and the required pitch.It seems there are methods to do PCB's at home (maybe this is also widely known, but i'm a newbie in DIY projects):
http://www.riccibitti.com/pcb/pcb.htm (http://www.riccibitti.com/pcb/pcb.htm)


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Rik! on August 05, 2011, 03:29:35 AM
Does anyone knows where I can find FFC in europe ? I found the cable I need in US, but the shipping is just HUGE ! Costs 20$.... + 80$ to ship a cable that fits into a simple letter ! Thats just absurd !!!


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Drewid on August 05, 2011, 09:22:55 AM
http://diy-beamer.com (http://diy-beamer.com/index.php?cPath=39&XTCsid=31ccb39fe162486f2b988a34bebd9ccf)

Usually good service as well.  ;D


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Kareltje on August 05, 2011, 10:25:38 AM
Does anyone knows where I can find FFC in europe ? I found the cable I need in US, but the shipping is just HUGE ! Costs 20$.... + 80$ to ship a cable that fits into a simple letter ! Thats just absurd !!!
Farnell should have them I suppose?





Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Rik! on August 05, 2011, 02:21:36 PM
http://diy-beamer.com (http://diy-beamer.com/index.php?cPath=39&XTCsid=31ccb39fe162486f2b988a34bebd9ccf)

Usually good service as well.  ;D

Unfortunatelly they don't have 6pin FFC :'(


Quote from: Kareltje
Farnell should have them I suppose?

What/who is Farnell ?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Drewid on August 05, 2011, 06:55:46 PM
UK electronic components suppliers, I've no idea whether you need to set up an account there or whether you can just buy stuff though, they usually deal with businesses I think.
http://tinyurl.com/3tfmc3y
It seems they do have the cables, though you'll have to make sure of pitch and everything.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Rik! on August 05, 2011, 08:37:38 PM
:'( they don't have it either ... I'm so sad ... I don't want to pay 60$ for a simple FFC :'(:'(:'(


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Drewid on August 06, 2011, 08:19:39 AM
You can always get a wider cable and carefully cut off the wires you aren't using.   As long as the pitch is the same it will work.  You do need to cut the extra wires off, as they can act as an ariel and cause interference even if not connected. (Don't ask me how that works, but it's been seen before.) ::)


 If you go for one that's more than twice as wide and cut it down the middle then you have a backup cable as well. 


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Rik! on August 06, 2011, 09:59:42 PM
Actually my cables are not made of... cables ! Thats just a flat sheet of I-don't-know-what with metallic pins at the end.
like this : (http://en.esskabel.de/upload/images/produktbilder/FFC_Cable_125_Raster_500x500_front_ISO.jpg)

and actually I found what I really need at DIY-Beamer.com but I don't know why, I cant order ! :'(


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Kareltje on August 08, 2011, 09:43:33 AM


Quote from: Kareltje
Farnell should have them I suppose?

What/who is Farnell ?
[/quote]

farnell.com  large electronic parts distributor.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Rik! on August 08, 2011, 05:11:43 PM


Quote from: Kareltje
Farnell should have them I suppose?

What/who is Farnell ?

farnell.com  large electronic parts distributor.
[/quote]

Yes, thank you, I finally googled it to find out but thanks !


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on August 23, 2011, 01:35:26 AM
If an FFC (Flat Flexible Cable) is the only thing you need then there is quite a lot of suppliers of these. This quite pretty inexpensive.  What DIY-beamer has that nobody else has is an "adapter" to "extend" the length of an ffc cable (because sometimes you cannot unplug one end and thus need to extend it instead).

The picture shown above is a typical FFC cable. 


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Drewid on August 23, 2011, 06:16:21 PM
Over on Lumenlab they came up with a method for joining FFCs using a loose pcb socket of the correct size, and jamming two cables into it face to face.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Rik! on August 24, 2011, 12:46:30 AM
Interesting ! I'll get there.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 12, 2011, 09:44:11 PM
Hey guys, I need a longer cable. I count 20 pins with two white rows on either side. Does this count as 20-pin or 22-pin? If it's 22-pin, it would make it .5mm pitch which would seem like the right thing but I wanted to check before I go ordering anything.

Edit: ok, I'm an idiot. It was 20. Lines not contacts  :-[


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 13, 2011, 05:13:53 AM
Assuming they are both the same pitch & #pins, is something like this:
(http://media.digikey.com/photos/Parlex%20Photos/PARLEX%20CORP-%20SERIES-%20050R50.jpg)


materially compatible with something like this:
(http://www.mediafire.com/imgbnc.php/f5e72beb2645013b8112be6a99cb093faf09d8fa7b2b9193f598cc547920328e5g.jpg)

TIA!


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on September 13, 2011, 05:29:30 AM
yes -- it should be fine -- watch that it is not "reverse". Some FFC have the connection face on different side of the cable -- if you follow what I mean) -- Most of them have the connection on the same side -- like your second photo.

I hope you found a cheap source for this. A lot of people tend to sell those things.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 13, 2011, 05:35:51 AM
yes -- it should be fine -- watch that it is not "reverse". Some FFC have the connection face on different side of the cable -- if you follow what I mean) -- Most of them have the connection on the same side -- like your second photo.

I hope you found a cheap source for this. A lot of people tend to sell those things.

It's from digikey: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=104631475&uq=634514642475842030

"Termination Style   Top on Both Sides, Backers Both Sides"

That means that it's same both sides right?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on September 14, 2011, 05:35:23 AM
dunno : your link goes nowhere it appears.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 14, 2011, 06:18:50 AM
dunno : your link goes nowhere it appears.

Sorry, worked for me because the link was still in cache. Part number is HFF-50U-06-ND


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: haunted on September 14, 2011, 12:21:46 PM
i think it's a straight, normal ffc here, it's usually specified if inverted.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on September 14, 2011, 09:22:02 PM
Well, depends what you call "normal" or "reversed" -- because if the contacts are on the same side, this has the net effect of reversing the signals! ---  pin1 will connect to pin30 and then  pin2 to pin29, etc.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 15, 2011, 12:43:44 AM
Well, depends what you call "normal" or "reversed" -- because if the contacts are on the same side, this has the net effect of reversing the signals! ---  pin1 will connect to pin30 and then  pin2 to pin29, etc.

Granted I don't know much about electrical, but it would seem to me that they'd normally just have the receiving end set up in reverse so it matches 1:1


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 19, 2011, 04:55:20 AM
yes -- it should be fine -- watch that it is not "reverse". Some FFC have the connection face on different side of the cable -- if you follow what I mean) -- Most of them have the connection on the same side -- like your second photo.

I hope you found a cheap source for this. A lot of people tend to sell those things.

Thanks for the confirmation, received the cables, but now I need to figure out something for shielding things since the only way I can get interference-free use is with both pen buttons disabled. I also notice that the interference seems to be the worst when the control boards were over the tablet's active area. If I had to do it again, I would probably go an inch larger and gotten new since I needed to scale-down the screen anyway.

Also I was wondering what's the closest you can usually have the LCD to the tablet surface w/o causing trouble if you know off-hand. I'm going to play with the distances some but I think I need to minimize the distance still if I'm going to try to add a glass pane in front.



Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on September 20, 2011, 06:45:43 PM
Quote
"when the control boards were over the tablet's active area"

I am not sure I follow -- are you saying you have circuit boards stuck between the tablet and the lcd ?  (like the lcd circuit boards for instance?).  I never heard that it ever work with a circuit board or metallic object in between.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 20, 2011, 07:14:20 PM
Quote
"when the control boards were over the tablet's active area"

I am not sure I follow -- are you saying you have circuit boards stuck between the tablet and the lcd ?  (like the lcd circuit boards for instance?).  I never heard that it ever work with a circuit board or metallic object in between.

No, I had to take the screen apart in order to get it thin enough. I also needed to remove the front plate in order to line up the tablet with it properly. I'm going to try to bend that front bezel (and tape to prevent short) so I can put it back on while allowing to ribbons out. The LCD circuit boards clearly need to be covered though. I'm also trying to figure something out about a case so I can get the other boards underneath it, since that seemed to work better when I originally tried (before I got the extensions to line stuff up better.).

I have the other circuit boards to the side of the sandwich, but either because I took off that front bezel (metal) or because of directionality, I get more interference. I may also see about shielding the extension interconnect cables from the lcd to the control board.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: haunted on September 22, 2011, 08:15:33 PM
Well, depends what you call "normal" or "reversed" -- because if the contacts are on the same side, this has the net effect of reversing the signals! ---  pin1 will connect to pin30 and then  pin2 to pin29, etc.

yeah obviously the word change from everyone ^^,  for me the ffc linked by build' is the most typical ffc ! (not reversed inverted..)

this link (http://www.parlex.com/tech_library/Ps704.pdf) can help a lot i think (even if i'm sure many of us had already found out this pdf !).

By the way, i experienced myself the normal/non reverse or inverted ffc today.. i thought my screen was dead.. got a screen full of vertical multicolor stretched pixels :/ but everything's ok  ! gotta find ffc again now.. =)


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 22, 2011, 08:56:35 PM
Those are also symptoms of a loose connection between the LCD boards and your control board (ie you didn't connect properly) so one thing to try before buying more cables. That's exactly how mine looked before I replugged everything in.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 27, 2011, 06:12:01 PM
So I could really use an extension adapter to get some more distance on one of the FFCs so all the boards are out of the way, but DIY-beamer doesn't seem to make the right pin/pitch I need. Will it work if I get a PCB for the same pitch but higher pin count and then just tape it up good with kapton or electrical to keep them paired tight?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on September 27, 2011, 07:48:02 PM
Yes, it can work, others have done it.

You do not need tape (but it wouldn't hurt). Just a very careful placement of the FFC before closing the "ZIF". Then it should hold tight. If you can, make sure you test connections with a multi-meter or at least make a good visual inspection of the connections.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on September 28, 2011, 08:33:41 PM
Yes, it can work, others have done it.

You do not need tape (but it wouldn't hurt). Just a very careful placement of the FFC before closing the "ZIF". Then it should hold tight. If you can, make sure you test connections with a multi-meter or at least make a good visual inspection of the connections.

Just had an idea. If I have 3 FFC's that are too short (but obviously same pitch/pin count) can I tape them tightly together to make an "extension" or with that cause something to blow up or erupt in flames? TIA


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Drewid on October 20, 2011, 01:48:59 PM
That'll probably work if you're really precise about it and also fix the joints to something that will stop them flexing. a thin piece of wood or plastic or something.
If it was me I'd be wanting to solder it or at least to get a meter on it to make sure adjacent pins weren't touching.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on October 20, 2011, 07:36:24 PM
That'll probably work if you're really precise about it and also fix the joints to something that will stop them flexing. a thin piece of wood or plastic or something.
If it was me I'd be wanting to solder it or at least to get a meter on it to make sure adjacent pins weren't touching.

Yeah, it works, but not very well. Will work for a while until I have to adjust anything and then it's nigh impossible to get it to line up again w/out totally retaping. Talked to a Digikey rep and they were less than useless as regards finding a socket to shove them together into. How complicated would it be to make one of those DIY-Beamer boards manually?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on October 21, 2011, 01:58:01 AM
Taping 3 FFCs together to make an extension?  You better find a single FFC and work with that. I mean those are fairly cheap and easy to find, no?

Making a DIY-beamer extension board manually -- well -- yes -- it *is* possible. But requires some basic equipment. I tried in the past finding parts to do just that (but without a PCB), but had no luck. I was thinking of getting two connectors that one would solder "back-to-back" but could not find anything that would work.  In all cases you needed to build a PCB board.  There are ways to make PCBs at home, but then the high-precision is difficult to achieve. One would need to patch the broken traces anyways. and even if you have a perfect PCB, then you need to solder the connectors -- there isn't much distance between the pins on the board either.   There are tricks out there, but it is not the easiest thing to do I must say.   

There might be ways, just that I had no luck finding it so far. If you have ideas, I am all ears.

I was thinking I could maybe manufacture those boards myself (=invest $$$), but I have no time to do this and given the wide variety of pin count and pitch, it is not a small task (unless one has cheap access to the proper resources and have the proper experience to make these).


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: buildorbust on October 21, 2011, 02:37:20 AM
Have you tried the toner printing method or is that not precise enough? I saw a few links about that and it looks interesting, but it seems questionable if that would work for .5mm pitch.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Drewid on October 21, 2011, 01:34:54 PM
Lumenlabs folks used to use an ordinary surface mount type connector of the right width, and jam the two cables into it face to face.
Then when they were sure it was working flood it with hot glue or superglue or something .

Not ideal.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Drewid on October 21, 2011, 01:43:58 PM
TP labs do something that could be soldered fairly easily,
http://www.tplabs.info/catalog/ffcfpc-0-5mm-dip-adapter-v2-0-multiple-pins/?gclid=CJDGo5nl-asCFcRO4QodcRHSlQ

BUT not cheap at about £10 per connector and you would need two, also pretty bulky.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: sekopasa on December 19, 2011, 09:18:10 PM
can i use a 20pin ffc with an 50pin pcb?

i mean this one,

http://diy-beamer.com/product_info.php?products_id=87&XTCsid=38bb66b6e2f196367e0d60ca13979acd

if i plug the two 20 pin cables as opposite, my logic says there shouldnt be any problem. What do you think?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: bernard on December 19, 2011, 09:41:12 PM
Yes, it is possible and some have done it. It can be annoying to align, but definitely possible. You can even help it a little by adding a piece of plastic or whatnot that would "fill" the remaining space and keep your cable straight while actuating the ZIF. Once the ZIF is clamped, it is holds the cable pretty tight.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: lazy_mosquito on November 29, 2012, 01:00:21 PM
The ffc -cable for extending the wacom i4 express-keys:

The ffc-cable for connecting the express-keys to the main PCB of the Intuos4 XL is very short. This replacement is 20cm long.

http://be.farnell.com/wurth-elektronik/687718200002/cable-ffc-rev-0-5mm-200mm-18way/dp/1908552 (http://be.farnell.com/wurth-elektronik/687718200002/cable-ffc-rev-0-5mm-200mm-18way/dp/1908552)

http://katalog.we-online.de/em/datasheet/687706200002.pdf (http://katalog.we-online.de/em/datasheet/687706200002.pdf)


Title: Re: Repairing torn FFCs
Post by: viveledefence on July 21, 2014, 11:32:00 AM
Repairing Torn FFC's

It's possible to repair a torn FFC with sandpaper and an extension kit. (I've not tried this yet but read it somewhere).

Cut it neatly across.

Stick a bit of insulating tape about 1/4" (5mm) from the cut end. 

Sand "along the grain" gently till you clean off the insulation between the tape and the end. Not too much or you'll remove the tracks as well. 

Gently remove the tape starting from the non-sanded side.

Pictures to follow. (Might take a couple of days)  ::)

Is this going to be continued? is there another post that discusses FFC repair?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Aerendraca on July 21, 2014, 11:40:22 AM
I doubt that this thread will be continued, but there are other posts about fixing FFCs. Try searching the forums for 'Anisotropic Tape'.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: viveledefence on July 21, 2014, 11:53:09 AM
I doubt that this thread will be continued, but there are other posts about fixing FFCs. Try searching the forums for 'Anisotropic Tape'.

I will. Thanks.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: sourpea on November 11, 2014, 07:33:31 PM
anyone know of a site that is selling extensions similar to diybeemer ones?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Aerendraca on November 11, 2014, 10:40:05 PM
All the DIYBeamer links are dead, any pictures or details of what you're after?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: sourpea on November 11, 2014, 11:25:44 PM
15mm and 30 pin, so a pinch of 0.5 nicosalto used the same monitor as i am using and had to use a  PCB board 40pin and a ffc 30pin/0.5pitch monitor in question is LP150U03. got it new in the box for 20 bucks didnt see that it had 2 boards on back instead of one (itchy ebay finger got the best of me) have the controller board coming, opted for slow shipping to give me more time to do more research .



Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: sourpea on November 22, 2014, 07:26:13 PM
found this tutorial on extending ffc cables has pictures and such for the diy newbies like myself also noticed at the end of the tutorial that the guy hot glues the connectors so they wont come apart then tapes them have not seen that in the other tuts i have looked at anyway here is the tut

http://kyorune.com/modding/article.php?id=63


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Aerendraca on November 23, 2014, 12:21:07 AM
Good tutorial, thanks for sharing.

Would something like this help you? - http://www.ebay.co.uk/itm/FFC-FPC-40-pin-0-5mm-Pitch-Ribbon-Cable-line-ZIF-HDD-length-20CM-Adaptor-extend-/161392514031?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2593be53ef


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: sourpea on November 23, 2014, 04:07:43 AM
Good tutorial, thanks for sharing.

Would something like this help you? - http://www.ebay.co.uk/itm/FFC-FPC-40-pin-0-5mm-Pitch-Ribbon-Cable-line-ZIF-HDD-length-20CM-Adaptor-extend-/161392514031?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2593be53ef

Actually I was mistaken on the size of the extension i need i miss read the post i thought i saw mine in and turns out it is completely different, i have a fpc with
10 mm width
.5 pinch
20 pin

(http://i62.tinypic.com/28sprpg.jpg)

I found a .5 pinch 25 pin adapter board with a coupling on each end on ebay it is around 5 dollars, but looking at mouser electronics website i found zif coupling with .5 pinch 20 connector dual contact, only problem i have right now is figuring out what it means by  top or bottom contact
and since the coupling is a dual would it even matter as long as the cables were both inserted the same way?
the coupling is only a dollar and some odd cents but i dont know if i can insert 2 cables into it with out wrecking my cable attached to the lcd, so i am thinking i might try the 25 pin board and order some 20 pin .5 pinch cable. if anyone can tell by my picture if the cable is top or ottom i would appreciate it, i would think it is bottom since the connector on the lcd has metal connectors on the bottom but i have thought wrong before.


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: sourpea on November 23, 2014, 04:13:55 AM
Good tutorial, thanks for sharing.

Would something like this help you? - http://www.ebay.co.uk/itm/FFC-FPC-40-pin-0-5mm-Pitch-Ribbon-Cable-line-ZIF-HDD-length-20CM-Adaptor-extend-/161392514031?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2593be53ef

LOL , i read the tutorial before i looked to see my ffc cable dimensions , the game cube is 20 pin .5 pinch so i am thinking that i can just get the parts he listed from digikey, do you agree?


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: Aerendraca on November 23, 2014, 07:27:06 AM
I can't see a reason why you couldn't just use the same parts. By the way you're fpc is bottom contact as in having the pins on the board side. One thing you'll need to make sure of is that the ffc you by has the pins exposed on opposite sides at each end to maintain continuity of the cable. Incidentally there exists a tape called anisotropic tape that you can get on eBay for a few pounds that is adhesive on both sides and conductive through it's thickness. The tape is ideal for connecting ffc/fcp of the size you are talking about, see here - http://www.ebay.co.uk/itm/3m-9703-Z-axis-Electrically-Conductive-Adhesive-Transfer-Tape-200mm-/261641422305?pt=LH_DefaultDomain_3&hash=item3ceb0b45e1

By the way for anyone reading this where the link eventually dies the tape is called 9703 z-axis (anisotropic) tape by 3m. (doh! It's spelled out quite clearly in the link, nevermind).


Title: Re: All you need to know about FFC's (Flat Flexible Cables)
Post by: XDjackieXD on April 03, 2015, 02:38:06 PM
I just found ffc extensions on dealextreme which are pretty cheap if someone still needs them:
http://www.dx.com/p/ffc-0-5mm-pitch-50pin-adapter-plate-docking-board-yellow-368080 (they have others sizes/pitches)

-Jakob