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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
    Sensors

    Woven Pressure sensors

    Just like Felted Pompom Pressure Sensor and felted crochet pressure sensor, it also works as pressure sensor when conductive yarns are woven into a textile structure. Here I tried two types of woven structure, satin and honeycomb.


    The honeycomb is a structure often used for tea towels and blankets. It creates 3D structure when taken off from the loom. This 3D structure helps for the pressure sensor to function as it separates the yarn when not pressured, and it also gives a nice bouncy feedback when you touch/pressure.


    Here is the 8 shaft construction for the honeycomb.

    The try-out movie shows the resistance change between 66k ohm to 8k ohm as I step onto it.
    stepping test


    The another structure I tried is the weft faced satin. as satin does not bind the yarn tight compare to the plain weave structures, it still allows the external pressure to change its density (resistance).

    Here is the weaving construction of the 8shaft satin.

    The resistance between two points of the fabric changes between 1200ohm to 240ohm as I step onto it. Also, you can observe the pressure change as I shift the balance on the stepping foot.
    stepping test

    To make these sample pieces, I used conductive yarn from Sparkfun (20% steinless steel/ 80% polyester) which is the same as the plug and wear conductive yarn.

    As for weaving, I used computerized shaft loom from Toika, with the warp 12/cm, cotton thread setup.



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