Haptics Experiment

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Parts & Materials

(1)Breadboard

(1)Arduino Uno

(4)Keyes Vibrating motor module

Jumper wires

(1)Tape

(1)Pen

Circuit diagram

Simple Motor Activation

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Sensory Funneling Illusion & Phi Phenomena

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Sensory Saltation

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Code

https://github.com/ajiujiu1003/Body-centric-technology

introduction

Experiment1

One vibrating motor module was connected to Arduino Uno. I learned something basic about Arduino code by watching videos and then tried out the “Blink” and “Fade” example, running different digitalWrite and analogWrite. It was such an exciting experience to see the module started to vibrate and how the code worked!

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Experiment2

First, I connected the modules to breadboard and Arduino Uno. Then I applied several strips of tape on the vibrating motor modules to fix them to my skin, and then wrote down their number.

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The four vibrating modules were placed like a square on the back of my left hand. They vibrated at the same time and lasted for 0.2 second each time, and there was a two-second paulse between each tap. Although they were vibrating in four different positions, what I felt was the point in the center of these four modules was stumulated.

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The second Illusion to be experimented is phi phenomena. I taped four vibrating motor onto my arm. The module connected to pin 13 tapped first, and then it’s 8, 2 and finally 4.  It was like the tap was originally generated from the first motor and move gradually to the last one, rather then there were four single taps.

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The last one is sensory saltation, or cutaneous rabbit, which I think is the most interesting one. I used three vibrating motor modules to test this illusion, and taped them on my arm like the former experiment. Each module vibrated for 0.2 second one after another, from the no.13 to the no.2. During this process, I can feel only two stimuli, one located between no.13 and no.4, and the other located between no.4 and no.2. What’s more, they were not felt like two single stimuli; instead, it was like something moving under my skin quickly.

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reference

https://www.bilibili.com/video/BV1YW411Z76E?from=search&seid=15475397622865977605

https://en.wikipedia.org/wiki/Cutaneous_rabbit_illusion

https://en.wikipedia.org/wiki/Phi_phenomenon