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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
    Example Projects


    Inspired by this Instructable (http://www.instructables.com/id/LilyPad-Wrist-Band-POV/), I have tried to make a POV (Persistence Of Vision) with ATTINY, so it can be cheap and tiny.

    Materials used:
    – 8 SMD LED
    – ATTINY45
    – 8 pin socket (not necessary)
    – KarlGrimm conductive thread
    – Lipo battery

    My idea is to use ATTINY45 (or 85) instead of Lilypad to make a small and cheap version of it. As ATTINY has only 5 pins available for controlling LED, I used charlieplexing to increase the number of LED I can control with 5 pins. This way I can have maximum 20 LEDs.
    For the POV, 20 will be a bit too much. I decided to use 8 LEDs. Below is my very messy hand-drawn schematic.

    Now it is all about sewing it up. I used KarlGrimm’s conductive thread. This thread is almost like wire, it has very low resistance so you do not have to worry about the length of the stitches, and you can solder on it.

    After the stitches are in place, I soldered the SMD LED on the threads. It helps to use double sticky tape to drop the solder on the back of the SMD LED. After this, I added wire with JST socket to connect to lipo battery and battery pocket.

    Then upload the POV sketch to ATTINY45 and place it on the socket.
    The code is here >> https://github.com/mikst/code/tree/master/attiny_POV

    I made a eTextile swatchbook with this technique and laser cut copper fabric trace.
    You can find the detail at the swatch book page >> http://etextile-summercamp.org/swatch-exchange/attiny-pov/

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