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  • Etching Flex Circuits
  • Lasercut Fabric Circuits and Traces
  • Fabric Ribbon Cable
  • Printed Copper Traces
  • Isolating Traces
  • Knit Breadboard Circuit
  • knitted stretchy cable
  • Laser- and Vinylcut Solder Masks
  • Machine-Sewing Solderable Traces
  • Machine-sewn Neopixel Strip
  • Non-Stretchy Traces
  • Plated Fabric Traces
  • Plotted Flex PCB
  • Screen-printed Copper Paint on Fabric
  • Circuit Sewing Tips
  • Stretch Conductors
  • stretchy cable
  • Stretchy Traces
  • Vinylcut Copper & Fabric PCB
  • Washability Tests
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    Content by Mika Satomi and Hannah Perner-Wilson
    E-Textile Tailor Shop by KOBAKANT
    The following institutions have funded our research and supported our work:

    From 2013-2015 Mika is a guest professor at the eLab at Kunsthochschule Berlin-Weissensee

    From July - December 2013 Hannah was a researcher at the UdK's Design Research Lab

    From 2010-2012 Mika was a guest researcher in the Smart Textiles Design Lab at The Swedish School of Textiles

    From 2009 - 2011 Hannah was a graduate student in the MIT Media Lab's High-Low Tech research group led by Leah Buechley


    In 2009 Hannah and Mika were both research fellows at the Distance Lab


    Between 2003 - 2009 Hannah and Mika were both students at Interface Cultures
    We support the Open Source Hardware movement. All our own designs published on this website are released under the Free Cultural Works definition

    Traces

    Machine-sewn Neopixel Strip


    Sewing Karl-Grimm copper conductive thread as bottom bobbin thread in sewing machine and soldering cut up pieces from a Neopixel strip to these lines to have custom placement and spacing.

    Plotted Flex PCB


    Using a Silhouette Cameo Plotter to cut a flexible circuitboard from various materials. The circuit base material is Kapton, a material that can withstand the high heat of soldering. The conductive circuit traces are cut from a sheet of copper tape and transferred manually onto the Kapton base. Finally a soldermask is cut from very […]

    Screen-printed Copper Paint on Fabric


    Conductive copper paint from LessEMF mixed with lubricant and screen-printed on to fabric. This print was made during the Screen-Printing Circuits Workshop held at the 2014 E-Textile Summercamp.

    Laser- and Vinylcut Solder Masks


    Make your own solder mask! Links: Fusible interfacing >> http://www.kobakant.at/DIY/?p=1611 Solder mask supplies >> Vinycut fabric circuits >> http://www.kobakant.at/DIY/?p=1132

    Etching Flex Circuits


    You can design, print and etch your own PCBs from a flexible sheet of Kapton coated with a thin layer of copper. To do this yourself you need some special materials and equipment, and if you are not planning on etching circuits more regularly then it can be nice to start by looking for a […]

    Stretch Conductors


    When you need you conductors (wires) to be stretchy, one option is to crochet, knit or braid a conductive thread (or even a wire) alongside some elastic. Make sure to tension the elastic as you go so that ultimately the elastic bunches together the strand, allowing it to stretch a certain amount.

    Machine-Sewing Solderable Traces


    Using Karl Grimm’s copper thread to sew solderable circuit traces to fabric. Karl Grimm’s copper thread is very much like wire, but much more flexible and it doesn’t quite look like wire. I haven’t had much luck using it as the bobbin thread in my sewing machine, but you can sew in place using regular […]

    Plated Fabric Traces


    Copper plated traces are flexible and solderable. Start by painting with conductive paint directly onto the fabric where you want the copper to plate to. Then you’ll need to prepare the plating process. It takes only a few minutes to get a nice layer of copper. More information on the plating process can be found […]

    Printed Copper Traces


    Flexible circuits can be made from a variety of flexible conductive materials on various substrates. The conductors can be printed, painted, cut&pasted, adhered and fused…

    Knit Breadboard Circuit


    Plug and Wear makes and sells a knit perfboard. Alternate rows and knit with wire and a non-conductive synthetic yarn so that parts can be soldered to separate rows, similar to a traditional breadboard.

    Fabric Ribbon Cable


    Dan Riley (www.scisci.org) made a beautiful Fabric Ribbon cable. 8 separate lines of conductive threads are woven into the fabric. The end of the cable is connected to normal 16 pin plug as normal ribbon cable.

    knitted stretchy cable


    For knitted sensors and interfaces, it will be great if there were also knitted cables. So, I tried it! By using Spool knitting tool (Strickliesel in German), you can make a knitted tube easily. For more easier and faster solution, you can also use automatic Knitting Mill (Strickm├╝hle). This tube is an isolation layer for […]

    stretchy cable


    Using stretch stitch on sewing machine, you can create stretchy fabric cable. The picture shows 9 line stretchy fabric cable, which resistance is 150 ohm/m.

    Isolating Traces


    In most applications it is important to isolate the conductive traces. For stretchy traces this requires a stretchy isolation. So far we have experimented and had good results with: stretchy fabric glue, puffy fabric paint and extra layers of fabric.

    Stretchy Traces


    Stretchy conductive traces are great for wearables because their stretchiness makes these traces comfortable and durable against wear and strain.

    Vinylcut Copper & Fabric PCB


    Using a vinyl cutter to cut the traces of a circuit design out of copper foil with adhesive backing. The copper traces can then be transferred to a base to make a flexible circuit. Additionally a solder mask can be lasercut (or also vinylcut) from fabric with adhesive backing and applied to isolate the traces […]

    Circuit Sewing Tips


    You can make a whole circuit using conductive thread and fabric. Here is some tips, DOs and DONT DOs..  that are learned from many mistakes we made in our past trials.

    Non-Stretchy Traces


    Non-stretchy traces make very stable connections on a non-stretch fabric but make less or no sense when working with stretchy fabrics.

    Washability Tests


    We haven’t done any consistent experiments for washability of conductive fabrics, threads and connections. But we have washed the Perfect Human costume containing the neoprene bend sensors more than twice and it is still functioning as before. We excluded the collar and the circuitry from these washed.

    Lasercut Fabric Circuits and Traces


    Fabric PCB’s are flexible, washable (hopefully) and sewable, even with sewing machines. The method we used is basically following the fabric PCB from Leah Buechley. You need a laser cutter to do this method, since the cut pieces are quite small and needs to be accurate. It will be quite difficult to cut this by […]