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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. Different Materials have different Conductivity. Conductor?. NON- CONDUCTOR. CONDUCTOR. INSULATORS. SEMI
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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