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Dive into the world of conductive textiles with Lynne Bruning and Troy Robert Nachtigall in this workshop sponsored by SparkFun and PlugandWear. Discover the different materials, fibers, and configurations used in creating conductive threads, yarns, and fabrics. Learn how to make a variable resistor, experiment with pressure-sensitive fabrics, and explore textile button sensors. Explore the intersection of electronics and textiles with hands-on projects and innovative aspects.
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Conductive Textiles • Where Electronics Meet Textiles • Workshop with • Lynne Bruning and • Troy Robert Nachtigall • Sponsored by • Spark Fun and PlugandWear Versione 3.0 - January 2010
Conductor? NON- CONDUCTOR CONDUCTOR INSULATORS SEMI CONDUCTOR SUPER CONDUCTOR
Mixing Conductive and non-conductive Fibers Current/conductivity in thread depends upon three major factors: 1.Conductive Material Used2.% of Conductive Fibers 3.Longitudinal Configuration & Horizontal Configuration
Conductive Fibers - metals – copper, silver, stainless steel, brass, Monel (Nickel) - metallized fibers - polyamide/silver- carbon
Fiber Horizontal Configurations Natural Dog Bone Triorbial Circular Segmented Hollow Core
Fiber Longitudinal Configurations • Straight • Twisted • Coiled • Crimped
All conductors have resistance • Wearable electronics have more resistance because they are part non condutor. • We can create a variable resistor (or Potentiometer) by attaching a jewelry closure.
Pressure sensitive fabric • Characteristics • Activation force 3.6 Kg per 50 mm diameter • More then 1.000.000 cycles • For a 15 cm x 20 cm switch resistance when pressed: around 200 Ohm, open circuit when non pressed
Pressure sensitive fabricsInnovative aspects • No need of further production steps • Low cost • Transpiring • Semi-transparent • Flexible • Different activating pressures • Matrix switches • Large area switches (50 cm x 50 cm) • Skin compatible materials
State Change Detection • Load up the sketch/Examples/Digital/StateChangeDetection • This sketch counts how many times a button is pressed
Textile button sensors 2 2 • Two different hookups • Normal Button • Resistor 1 1 2 1