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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:

    Since 2020, Hannah is guest professor of the Spiel&&Objekt Master's program at the University of Performing Arts Ernst Busch in Berlin

    From 2013-2015 Mika was 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

    Chaining Components

    This design was made as part of the Stulpe Circuit Project

    To keep the circuit flexible, parts and functionality are groups into small areas with flexible areas in between. one option is to make the hard nodes from hard PCB material and solder wire connections in between (see photos). Another option would be to design a hybrid circuitboard that transitions between hard and flexible pcb materials. For this option it would be nice to have hard pcb nodes manufactured by fritzing. Their boards are white and most of the electronic parts are black. The black/white aesthetic would go well with the colours of the stulpe.


    Module string

    On stulpe


    Comments and Observations

    – In order to attach and remove the circuitboard from the snaps on the stulpe a considerable amount of strain is exerted on both the knit fabric of the stulpe surrounding the snap, as well as the snap mounted on the circuitboard. reinforcement backing added to the knit fabric helps relieve and distribute this strain on the side of the stulpe.
    – There are a number of small components on the circuit and if the circuit is made super small then all these small parts end up very close together forming a firm surface, even if they are mounted on flexible circuitboard.
    – Machwerk has had to move out of their space so i currently don’t have access to an etching bath. for now my options are vinylcut coppertape or lasercut copper fabric.
    – A flexible circuitboard made of copper tape (vinylcut) or copper fabric (lasercut) is very fragile when bent and strained at the solder joints.
    – Stulpe knit fabric is not very stretchy or tight fitting so sensors are not stretched/pressured much through bending the wrist up and down. Pressuring of the wrist against the surface of the table is most reliable.


    – Male and female metal snaps
    – ATtiny mircorontroller
    – RGB LED
    – Speaker (or vibration motor) — make the speaker coil directly on the pcb and just add magnet
    – 2 Pull-up resistors
    – 2 Capacitors
    – JST socket
    – LiPo battery
    – Slide switch
    (- Programming pins)

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