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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
    Actuators

    Lulu Bumblebee PCB

    Lulu is a hardware solution that interfaces between an LED light source, an optic fiber strand or bundle, and sewable soft circuit connections.

    Lulu is providing a simple, reliable toolset for people who want to use side glow optical fibers in their eTextile and wearable projects. Use of light in textile and fashion design is becoming more and more common and many schools started to teach this subject as a part of their textile design curriculum. Optic fibers could be embedded in textiles as embroidery, in weaving, knitting and knotting process and many textile designs have been realized in recent years.

    This is the first version of the Lulu Daisy Bumblebee_18.01!

    LINKS:
    Github >> https://github.com/eTextile/Lulu
    Documentation >> http://www.kobakant.at/KOBA/category/lulu/
    Photos >> https://www.flickr.com/photos/plusea/sets/72157691569545895




    PCB Manufacturing

    Ordered from Elecrow:
    >> http://elecrow.com/

    Gerbers:
    >> https://github.com/eTextile/Lulu/tree/Lulu-daisy

    ORDER DETAILS:
    – copper layers: 2
    – PCB thickness: 3mm
    – solder mask: matte black (on both sides)
    – silkscreen: none
    – surface finish: HASL lead free
    – Castellated Hole:No
    – Copper Weight:1oz
    – PCB Stencil:NO


    Bill of Materials (BOM)

    – 3mm thick PCB manufactured by Elecrow:
    >> https://www.elecrow.com/pcb-manufacturing.html
    KiCAD and Gerber files >> https://github.com/eTextile/Lulu/tree/Lulu-daisy/Hardware/kicad_Lulu_daisy/Lulu_daisy_bumblebee_18.01

    – WS2812B MINI Neopixel addressable RGB LEDs
    datasheet >> http://www.normandled.com/upload/201607/WS2812B%20Mini%203535%20LED%20Datasheet.pdf
    >> https://www.led-stuebchen.de/de/smd-leds/10x-ws2812b-5050-rgb-led-integriertem-ws2811-led-treiber-ic6
    >> https://www.ebay.de/itm/WS2812B-MINI-3535-RGB-LED-mit-integri
    ertem-WS2811-LED-Treiber-IC/173140850411?hash=item284fffb6eb:m:m4evCf5P4NKZRo7GbEJvUgA

    – 1uF 0603 capacitor mounted between VCC and GND (optional)
    >> http://www.segor.de/#Q=1u0-0603-X5R%252F25V&M=1

    – 2mm diameter sideglow optic-fiber
    >> https://www.leds-and-more.de/catalog/20mm-lwl-lichtwellenleiter-lichtleiter-seitlich-leuchtend-p-1940.html?osCsid=2me5dl4q5amcvgb6tnbqfd87i5

    – end-glow optic-fiber + ABRAISON!
    http://wiki.datapaulette.org/doku.php/atelier/documentation/materiautheque/materiaux/electronique_textile/actionneurs_textiles/fibres_optiques#la_connectique
    0.25mm diameter/12000m/roll PMMA fiber optic cable end glow for decoration lighting
    >> https://www.aliexpress.com/item/0-25mm-diameter-12000m-roll-PMMA-fiber-optic-cable-end-glow-for-decoration-lighting/1923995977.html?spm=a2g0w.10010108.1000001.8.563c2ee3wVFURz

    – 3.2mm diameter shrink-tube with hot-melt adhesive

    – Karl-Grimm copper or silver plated copper conductive thread
    >> http://karl-grimm.de/


    Pin-out


    Datasheet

    Lulu_datasheet


    Code Examples

    There are two nice Neopixel (WS2812) libraries for Arduino and you can install both via the Arduino library manager:
    Adafruit’s Neopixel library >> https://learn.adafruit.com/adafruit-neopixel-uberguide/arduino-library-installation
    FastLED library >> http://fastled.io/


    Assembly Instructions

    Before sewing the circuit connections, shrink-tube the Lulu to the end of your
    optic-fiber:

    How to chain multiple Lulus:


    Sample Swatches

    Single Lulu:


    Two Lulus:


    Early Sketches

    Lulu Bumblebee PCB dimensions
    Lulu SHAFT ideas
    Bumblebee dimensions
    Lulu Bumblebee schematic



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