Pressure Activated E-Tie



Through the ideation activity, I end up choosing the concept created with the words (tie, hugging, suddenly). I proposed to design an e-tie that is a hug sensor that measures pressure and intensity of hugging with others.



Deep pressure hugs with partners, family and friends calm people and reduce stress and anxiety. A deep pressure hug would turn a light on or produce a melody on this e-tie. With this type of a tie we can use that information to understand how people approach each other in public or private

I created a push button sensor using knitting technique for creating this pressure activated accessory. I Also used French knitting technique to create a conductive cord for the circuit. Learning knitting skills wasn’t an easy task, it required a lot of patience and accuracy. I followed video tutorials to learn beginner steps. I challenged myself and I tried many samples and repeated and practiced it until I got the hang of it. I struggled with French knitting a lot more. I had to practice without the conductive thread because it was causing a lot of tangling and very tight stitches. Afterwards, knitting with the conductive thread became possible.


E-Tie design sketches



Knitting process

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Completed knitted parts

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Testing the circuit

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Final Prototype

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This experiment taught me not only knitting skills, but also how to knit a yarn with a conductive thread and treat them as one thread. I explored different knitting techniques to produce different kinds of stitches, some of them were successful and some weren’t, but this resulted in creating an ironic textured patterned tie design. I learned also how to connect a circuit through many trials and errors and that made me understand short circuits, cut or non-conductive ones, closed circuits, and positive and negative sides of a battery in relation to the LED light in order to light it up. It’s my first time to work with electronics and all this information and findings are new to me. I will definitely do more projects with electronics and sensors, and apply this knowledge to create interactive interior environments for my thesis projects.

Information sources: None

Next Steps:

I would like to take this designed wearable accessory further and make it interactive through computation. I propose that the wearer can be able to control the intensity of physical contact with others. They can set the ideal pressure for a hug, and then if the hugger exceeds that limit, a special sound would be produced informing the hugger that a too tight squeezing hug is becoming unpleasant, so they will loosen up or break free. The sensor allows the wearer to feel comfortable knowing that a limit has been set and they’re in control of it.