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  • 12 Ways to hold your coin-cells
  • Battery 101
  • Battery Snap Pouches
  • Clothspin Battery Holder
  • Conductive Fabric Microbial Fuel-Cell
  • DIY 3V Step-Up (Joule Thief)
  • Igne Oyasi Coin-Cell Holder
  • Lasercut Stretchy Battery Pocket
  • Lithium Polymer Batteries
  • Neoprene Battery Pouches
  • Plotted Flex AA Battery Holder
  • Sewable 3.3V Regulator
  • Sewn USB Plug
  • Solar cells
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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


    Sewn USB Plug

    USB plugs are surprisingly easy to make yourself. You might have already seen some versions made directly on a PCB – either milled or etched (or scraped by hand) from copper laminated FSR board. But you can also sew a USB plug with some thick conductive thread (or wire) and some wood in which you […]

    12 Ways to hold your coin-cells

    A collection of different ways to store coin-cell batteries (CR2032). One picture per method, with links to further documentation where available.

    Conductive Fabric Microbial Fuel-Cell

    This experiment in making a two chamber battery from salty agar, water, microbes and a conductive fabric electrode was made during Interspecifics‘s Microbial Fuel-Cell workshop at PIFcamp 2016.

    Battery Snap Pouches

    Leather pouches for various size batteries that extend the positive and negative power supply to male and female snap connectors. The punched holes for stitching the pouches together makes opening and closing the pouch to exchange the battery or debugging quicker and easier.

    Igne Oyasi Coin-Cell Holder

    Igne Oyasi coin-cell holder

    I’m not sure if this is a good idea… more photos >> https://www.flickr.com/photos/plusea/albums/72157645741017506

    Plotted Flex AA Battery Holder

    For those times when you’re in need of a flexible 3 x AA battery holder…

    Clothspin Battery Holder

    Inspired by the paper solution of folding the corner of a sheet of paper and using a binder clip to hold a coin-cell battery in place, this solution is inspired by Melissa Coleman’s suggestion that a clothspin would be more suitable to fabric…

    Lasercut Stretchy Battery Pocket

    Lasercut from stretch conductive lycra, this coin-cell battery pocket makes for a super simple fabric power supply connection. A plus symbol lasercut into the center of the pouch indicates which way around the battery should be inserted.

    Solar cells

    A solar cell or photovoltaic cell is a device that converts light directly into electricity by the photovoltaic effect. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight, while the term photovoltaic cell is used when the light source is unspecified. Assemblies of cells are used to make […]

    Battery 101

    Here are some basic data (size, capacity) of various chargeable, non-chargeable batteries.

    Sewable 3.3V Regulator

    Regulators are simple and cheap way to create 5v or 3.3v (or any desired voltage if it is made for it) Often when you use a microcontrollers (i.e. Arduino) or a wireless communication module (i.e. Xbee, bluetooth), you need to supply exact voltage the device requires. This is an example of sewable 3.3v regulator and 9V battery […]

    Lithium Polymer Batteries

    from Wikipedia: also: Lithium-ion polymer batteries, polymer lithium ion, Li-poly, Li-Pol, LiPo, LIP, PLI or LiP Rechargeable batteries which have technologically evolved from lithium-ion batteries. Ultimately, the lithium-salt electrolyte is not held in an organic solvent as in the lithium-ion design, but in a solid polymer composite such as polyethylene oxide or polyacrylonitrile. The advantages […]

    DIY 3V Step-Up (Joule Thief)

    There is an interesting tutorial for how to make 3V step-up circuit by using simple component from. The project is called Joule Thief. With this module, you can light up LED (it needs 3V) with single AAA battery (1.5V).

    Neoprene Battery Pouches

    Neoprene Battery Pouches

    These neoprene battery pouches are made to fit different kinds of common batteries. They turn out to be very useful when prototyping and competing a range of different projects, not necessarily just wearable ones.