Making Knit Stretch Sensors

This week my order of Nm 10/3 Conductive Yarn from Plug and Wear arrived. I immediately started making some samples of the knit sensors I blogged about a few weeks ago.

Following Hannah Perner-Wilson’s tutorial/method, I made two sensors using a Wonder Knitter from the craft store. It came with two attachments, a 3 pin and a 6 pin to make a thinner and thicker knit tube.

After making two knitted sensors with a combo of acrylic yarn and conductive yarn, I made my own knitting spool out of an old thread spool and some nails. I used some sock weight yarn in a similar thickness to the conductive yarn and made a nice thin sensor.

Here are the three sensors I made side by side. They are about 15 inches long with tails to connect the conductive yarn to alligator clips for testing.

Resistance readings from my multimeter:

  • Sensor C: 6 pin knit on Wonder Knitter – Resting 4.45 M ohm, Stretched: 10 K ohm
  • Sensor B: 3 pin knit on Wonder Knitter – Resting: 3.9 M ohm, Stretched: 10 K ohm
  • Sensor A: 3 pin custom spool knitter and sock weight yarn – Resting: 1.0 M ohm, Stretched: 10 K ohm

After doing some more tests, I’m going to start prototyping a knit version of my Musical Drawdio Puppetusing the sensors as the tentacles so that you can ‘play’ it by pulling on them.

http://vimeo.com/moogaloop.swf?clip_id=20713579&server=vimeo.com&show_title=0&show_byline=0&show_portrait=0&color=00ADEF&fullscreen=1&autoplay=0&loop=0

I’ve also been teaching myself to crochet and will be trying out more techniques soon. I made a crochet button using the example on How To Get What You Want.

Hooking the sensors up to an LED to control brightness:

http://vimeo.com/moogaloop.swf?clip_id=20714854&server=vimeo.com&show_title=0&show_byline=0&show_portrait=0&color=00ADEF&fullscreen=1&autoplay=0&loop=0

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s