Research on Conductive Yarns

I’m interested in conductive yarns to make stroke sensors.

Conductive yarn is made of two basic materials, a non-conductive fiber such as wool or cotton, and a conductive malleable metal, most often silver or stainless steel. Yarns are used for anti-static, electromagnetic shielding, data transfer, and wearable technology. They are also used for creating stretch, stroke, and pressure sensors when crocheted or knitted. The yarn has a very high conductivity rate and typically has 10 ohms per inch. There are very few health hazards to conductive yarn, and is safe for direct skin contact.

Yarn is usually grey or a metallic color, but from lessemf.com it comes in purple and teal for $30 for a 50g skein. There are no other reliable retailers I can find online that are still in business other than lessemf.com. How To Get What You Want details some retailers that are in other countries and requires special ordering.

Some projects using conductive yarn:

 

from kobakant:

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“Here is the crochet pressure sensor.The main principle is same as regular pressure sensor. Instead of conductive fabric or thread, I used conductive yarn from Schoeller, Nm 50/2 60/40 Pes/Inox @ Euros 65.00/kg (25,000 metres/kg). Since this yarn is very thin, it is mixed with normal yarn and crochet, which is what you can see as gray patch in the middle. For the resistive material, anti-static foam is used instead of velostat to support the sensor shape.”

A crochet tilt Potentiometer:

In the winter, mittens keep your hands warmer than gloves:

And this is a neat collaboration between giant companies for jacquard weaving. I wish I knew where they sourced the colored yarn from.

In future classes, I hope to use yarn as a stroke sensor that when strands are moved or touched it emits a noise. I’m also looking forward to making interactive weavings.

 

 

 

 

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