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  • Bumblebee Breakout
  • Button Lights
  • Critical Critters
  • Crochet LED Throwie
  • DIY Neopixel Lulu
  • electromagnetic velcro
  • Fabric Flipdot with H-Bridge
  • Fabric LED Strip
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  • Fabric Speakers
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  • Flapping Wing Swatch Example
  • Flapping Wings
  • Flip-Dot Fabric
  • Flip-Dot Swatch Example
  • Heating with Eeonyx Test
  • Igne Oyasi Motor
  • Jumping in a Ring
  • Knit Speakers
  • LED Solutions
  • Lulu Bumblebee PCB
  • Magnetic Fur
  • Motor on a String
  • Moving Fabric Petals
  • Neoprene Motor Pouch
  • Overview: Electromagnetic Actuators
  • Playing with Sideglow Optic-Fiber
  • Serpentine LED Strip
  • Sewable Surface Mount LEDs
  • Nitinol/Shape Memory Alloy
  • Shape Memory Alloy connection
  • Shape Memory Alloy Training
  • SMA Smocking
  • SMA Smocking Swatch Example
  • Speaker Solutions
  • TEXTILE ACTUATOR BOTS
  • Vibe Modules
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  • Woven Speaker
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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
    Actuators

    Overview: Electromagnetic Actuators

    Flipdots, flap, jumps, speakers, motor, fur…

    FLIP-DOTS
    Flip-Dot Swatch Example >> https://www.kobakant.at/DIY/?p=5915
    Fabric Flipdot with H-Bridge >> Fabric Flipdot with H-Bridge
    Flip-Dot Fabric (work in progress) >> https://www.kobakant.at/DIY/?p=5878

    FLAPS
    Flapping Wing Swatch Example >> https://www.kobakant.at/DIY/?p=5900
    Flapping Wings >> http://www.kobakant.at/DIY/?p=8058

    JUMPS
    Jumping in a Ring >> http://www.kobakant.at/DIY/?p=8063

    FABRIC SPEAKERS
    Fabric Speakers >> https://www.kobakant.at/DIY/?p=2936
    Fabric Speaker Swatch Example >> https://www.kobakant.at/DIY/?p=5935
    Woven Speaker >> https://www.kobakant.at/DIY/?p=5509
    Knit Speakers >> https://www.kobakant.at/DIY/?p=4465

    TEXTILE MOTORS
    Motor on a String >> https://www.kobakant.at/DIY/?p=5185

    OTHER
    Magnetic Fur >> https://www.kobakant.at/DIY/?p=4463


    INTRODUCTIONS to ELECTROMAGNETISM

    ELECTROMAGNETISM (FULL SHOW)
    >> https://www.youtube.com/watch?v=bht9AJ1eNYc

    min 19:40: Left Hand Rule for Coils

    Maxwell, The history of Electromagnetism – Documentary
    >> https://www.youtube.com/watch?v=TfKBKb7Uc9s

    Electromagnets

    An electromagnet is simply a coil of wire. It is usually wound around an iron core. However, it could be wound around an air core, in which case it is called a solenoid. When connected to a DC voltage or current source, the electromagnet becomes energized, creating a magnetic field just like a permanent magnet. The magnetic flux density is proportional to the magnitude of the current flowing in the wire of the electromagnet. The polarity of the electromagnet is determined by the direction the current. The north pole of the electromagnet is determined by using your right hand. Wrap your fingers around the coil in the same direction as the current is flowing (conventional current flows from + to -). The direction your thumb is pointing is the direction of the magnetic field, so north would come out of the electromagnet in the direction of your thumb. DC electromagnets are principally used to pick up or hold objects.
    (from http://www.coolmagnetman.com/magelect.htm)

    An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire that create the magnetic field. The wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material such as iron; the magnetic core concentrates the magnetic flux and makes a more powerful magnet.
    (from https://en.wikipedia.org/wiki/Electromagnet)


    Magnetic field produced by a solenoid (coil of wire). This drawing shows a cross section through the center of the coil. The crosses are wires in which current is moving into the page; the dots are wires in which current is moving up out of the page.


    The magnetic field lines of a current-carrying loop of wire pass through the center of the loop, concentrating the field there

    Simple coil experiment


    Materials we often use in making electromagnetic actuators

    highly conductive:
    Karl-Grimm copper and silver conductive threads >> karl-grimm.de/
    Copper plated ripstop conductive fabric >> statex.de/

    Enameled wire, magnet wire:
    >> https://www.conrad.at/de/p/block-kupferlackdraht-aussen-durchmesser-inkl-isolierlack-0-10-mm-1-pckg-0-10-kg-605034.html
    >> https://www.conrad.at/de/p/block-kupferlackdraht-aussen-durchmesser-inkl-isolierlack-0-15-mm-1-pckg-0-10-kg-605053.html

    Neodymium magnets
    >> https://enesmagnets.pl/shop/en/permanent-magnets/neodymium-sintered/ring-magnets/

    Magnetic beads
    >> https://www.crystal-creative.com/de/perlen/magnetperlen/

    Steel conductive thread >> bekaert.com/

    fusible interfacing (iron-on heat glue) >> https://www.amazon.de/dp/B000Y0083K/ref=sr_1_8?keywords=heat+n+bond&qid=1578903614&sr=8-8

    1W resistors
    datasheet >> https://cdn-reichelt.de/documents/datenblatt/X400/DS_PO_SERIES_VIT.pdf
    datasheet >> https://cdn-reichelt.de/documents/datenblatt/B300/RSF-RSMF_ENG_TDS.pdf

    Transistors
    NPN: 2N2222 datasheet >> https://www.onsemi.com/pub/Collateral/P2N2222A-D.PDF
    PNP: 2N3906 datasheet >> https://www.onsemi.com/pub/Collateral/2N3906-D.PDF
    MOSFET: IRLU8743 datasheet >> https://www.infineon.com/dgdl/irlr8743pbf.pdf?fileId=5546d462533600a4015356719c7e26ff

    ICs
    L293D/NE (H-Bridge) datasheet >> https://cdn-reichelt.de/documents/datenblatt/A200/L293NE-TI.pdf


    Other’s electromagnetic works:


    CHIJIKINKUTSU
    Nelo Akamatsu
    >> http://www.neloakamatsu.jp/chijikinkutsu-eng.html


    Chowndolo
    Giacomo Lepri
    >> http://www.giacomolepri.com/

    Chowndolo from Giacomo Lepri on Vimeo.


    Not North
    Irene Posch, Talia Mukmel
    >> http://www.ireneposch.net/not-north/


    The Embroidered Computer
    Irene Posch, Ebru Kurbak
    >> http://www.ireneposch.net/the-embroidered-computer/


    Flip Dot
    Pauline van Dongen
    >> https://vimeo.com/75606054

    Flip Dot from Pauline van Dongen on Vimeo.


    Draping Sound
    EJTech
    >> http://ejtech.cc/?page_id=1379

    Draping Sound from ejtech on Vimeo.


    Phase In, Phase Out
    EJTech
    >> http://ejtech.cc/?page_id=814


    Chants Magnétiques
    Claire Williams
    >> http://www.xxx-clairewilliams-xxx.com/projets/chants-magnetiques/



    Sound Embroidery
    Claire Williams
    >> http://www.xxx-clairewilliams-xxx.com/projets/sound-embroidery/


    DER THEATERAUTOMAT
    PRAGMATA (Angelina Kartsaki & Sebastian Schlemminger)
    >> http://www.sebastianschlemminger.de/der-theaterautomat.html

    Theaterautomat Trailer from PRAGMATA on Vimeo.



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