Group 14 Christina Chen
Swatch type Digital switch
Description This is a digital switch that works through pushing the heart. There is a sponge on the inside with a hole through it. There is a layer of conductive copper tape on both sides. So when the heart is pressed, the copper tape gets closer together.
Needle and thread, copper tape, fabric, scissors and/or knife, sponge
Tools and techniques
Building off of 4.2 where I made analog fabric pressure sensors, I decided to try something similar where pressure is applied. I saw a digital switch soft push button using foam which looked like it would produce better results when it came to applying pressure. So first I tried this method with a scrap of knit material to see how it would react. (https://vimeo.com/488800742)
When it came to actually putting the heart together, first I cut out the heart shaped fabrics with a knife. I laid out copper tape on the inside. Then I used the knife to make the sponge thinner, and scissors to cut the sponge into a shape that would fit inside the fabric. Next I poked a hole inside the sponge with a knife, making sure the hole would be in an area above the copper tape area. Then I sewed the heart together using needle and thread.
The sponge needed to be significantly smaller than the size of the fabric because it needed to be sewed together with breathing room. If it is put together too tightly the switch will not work.
Notes This switch differs from the original because the original is meant to be three push buttons. I used the concept of pushing however the materials are slightly different as well. For one, the original uses neoprene while I used cotton. I also substituted conductive fabric for copper tape and foam for sponge. Also the shape is different and my sewing skills are significantly worse.