Questions tagged [flexible]

See also [fpc] for Flexible Printed Circuits.

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Are FPCs or FFCs more resilient to bending/creasing multiple times (~180 degrees)

My company is designing a product that requires a flexible cable. The cable design is almost exactly the same as a headphone cable as seen here I'm concerned that inevitably some idiot will try to ...
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62 views

How much can you bend a flex PCB?

Having never worked with flexible PCB's before I was wondering how much and how often it can be bend? I'm thinking of using a flex PCB inside a pet collar where it would have to fold in order to ...
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89 views

Identify that connector - Is it reusable?

I have an Asus Zenfone AR which has had the screen replaced 3 times. Last time I replaced it myself, Asus the first 2 times. Screen replacement went fine but once together I discovered up volume ...
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126 views

Crimp and Solder connectors for flexible electronic

I am desperately looking for crimped connectors compatible with flexible PCB and devices such as the one depicted in the following figure : This is a pressure sensor based on a piezoelectric polymer. ...
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127 views

LVDS Flex Cables - Optimizing Trace Layout for 10 GbE

I want to run a 10 Gigabit Ethernet (GbE) signal over a 15 pin LVDS flex cable like this one: My PCB will accept an RJ45 connector, and those traces will run over the PCB to the flex jumper, then ...
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109 views

I need to do a membrane pcb for a keyboard or a flexible PCB like a membrane PCB

I need to design a membrane PCB for a keyboard and/or flexible double sided PCB that works like a membrane PCB. My problem here is that I don't know how to do the buttons, with one contact of the ...
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4answers
121 views

Bending insensitive connection or highly flexible/thin cable

I want to attach several accelerometer data loggers to different parts of the human body (i.e. my own, it's not gonna be a commercial product). The individual units save their data to sd card so they ...
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83 views

Which material is used in flex PCB circuits ?

We are planning to use flexible PCB circuit in our application. Can anyone please suggest the material used in flexible PCBs ? We are looking for the flex PCB material similar to the one used in ...
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1answer
614 views

SPI max distance on flexible circuit

I want to run a number of sensors up the length of a flex circuit, they all communicate via SPI and I will run chip selects individually to each device. I need the flex circuit width to be minimal so ...
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1answer
101 views

Unifilar (non-stranded) copper wires flexibilty

we all know the 26 AWG wires that come inside UTP cables. Those surely are flexible. But what a bout an AWG 15-16 such copper wire, is it flexible enough to use as feeding cable for the 12 V car ...
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382 views

How to connect flexible flat cable

I'm trying to connect this to this. From another question I asked (I can't find it anymore) the cable is a flexible flat cable, and I should pull out the black plastic piece at the bottom right of the ...
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1answer
309 views

Will a 0.400mm thick PCB be too flexible?

My PCB will roughly have the following stackup: 35um copper foil (tracks) 100um FR4 prepreg 200um FR4 core 100um FR4 prepreg 35um copper foil (tracks) This gives a total board thickness of around ....
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83 views

Can I slice a flex cable to reduce its width?

I have a cable for my raspberry Pi camera that is bulky in its current wide state. While tricky, is there any downside to slicing it length wise, and stacking the pieces on top of each other? Would ...
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708 views

Flat flex cable soldered to PCB is developing a short circuit over time

I'm facing the issue that an OLED display develops a short over time and stops working. The short always occurs at the solder point where the flat flex cable gets soldered to the PCB. Touching the ...
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21k views

Is there a technical reason why most touch screens use glass rather than plastic?

Most modern touch screens in portable devices are made of glass. This glass often breaks if accidentally dropped. Also, it is very reflective, making it difficult to use in strong light. I know that ...
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129 views

how to remove dialshock 2 ribbon flex board?

my dualshock 2 has a connector to the ribbon board and looks like this connector can someone tell me the proper way to remove the flex board from this connector while leaving the connector in working ...
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3answers
945 views

How to manufacture cheap custom flexible circuit boards? (strips)

Let's suppose I need two long series of IR emitters and receivers to detect position of people along a hallway (corridor). I would use surface mount components to make the sensors less noticeable, and ...
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3k views

Flexing Peltier Plate (Physical Question)

I am doing research into Peltier plates for a project, which requires a flexible component. From what I have found, no commercially made flexing Peltier plates seem to exist. My question is, what is ...
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How could I power flexible oled screens with wearable power source and could I transmit data onto it with bluetooth via app [closed]

How could I power flexible oled screens with solar power and could I transmit data onto it with bluetooth via app? Would this be possible? please can you help thank you
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71 views

Flexible long wire for high currents

I have an ATX power supply which has got multiple 5v outputs (at a maximum 40 amp current). I am willing to use it to power up a moving mechanical system 5-10 meters away. The problem is that since ...
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2k views

What is this type of flexible contact strip called?

The LCD below is from a cheap digital clock which was (obviously) damaged (broken glass). The electrical connection between the PCB and the display was realized with this pink strip. Its flexible... ...
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1answer
1k views

Defining a flex bus in Eagle

How does one go about creating a board file for a board with both "normal" PCB material, and flex materal? I have a project where I want the PCB and a flex bus to be seamlessly joined, like: http://...
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311 views

Is it ok to bend a VIA in a Flex Printed Circuit?

On a Flex Printed Circuit (FPC) made out of Kapton polyimide, will anything bad happen if I put a VIA in a part of the FPC that has to bend? VIA size: 0.2 mm hole diameter in 0.4 mm copper diameter ...
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1k views

How do I interface to this flexible flat cable connector?

I've noticed this connector on a lot of boards, and I was wondering if anyone knew where to source them? I can't seem to find them on digikey.com anywhere. What I'd really like is to get a male ...
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1k views

What are standard design rules for a Flex Printed Circuit (FPC)?

For an FPC made out of Kapton (polyimide), what are the: min trace width min trace-trace separation min distance from a trace to the edge of the FPC min drill hole diameter min distance from a drill ...
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349 views

Solder Mask on fPCB starting to degrade

I have a flex-PCB that is acting as a sensor bus for one of my projects. I started getting some wonky readings from one of the sensors, but I found that if I removed the sensor from the bus (with ...
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1k views

Join together two flexible electrical cables

I have 2 electrical cables (audio cables) of same diameter that I want to join, with a connection as discreet as possible. It is common to use some dominos for this kind of task, but these are really ...
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3k views

Flexible-PCBs: what data is needed for manufacturers?

Can someone explain more about how you generate data for flexible or flexi-rigid PCBs for manufacture? Do I just make more layers and export more gerber files? Is there anything I need to keep in mind ...
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1answer
306 views

How to find connectors for Densitron TFT displays

I'm having a hard time to find information about the connectors for a TFT display I just bought from Densitron. The cable is physically similar to FFC/FPC, but the terminals are not straight, so I can'...
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684 views

Flexible Watch Circuit Parts

I'm working on a project to make a wristwatch similar to this one: Now I have the ability to make flexible PCBs since I accidentally bought some crazy thin copper clad. I obviously want to use SMD ...