Open Project: Prototype Zhiye Yang


In this final, my idea is to create a key chain to avoid collisions with people. In our life, when we are in a hurry, we will run in a hurry, and in this process, we will collide with each other because of people who walk too slowly in the street. Therefore, in order to avoid this problem, I created this alarm that can remind others or myself.


The idea this time is that the key chain can be hung anywhere in the body, such as the arm, the front of the schoolbag, the belt, and so on. When running or running too fast, there will be a red light. The red light means to remind the people around me that my speed is relatively fast, so I can avoid it properly. At the same time, I can also remind myself to pay attention to the passers-by and my speed to avoid any unnecessary collisions. When you collide with others, the key chain will flash white light. This light is to remind yourself and others to say sorry to each other in time.

The 4 points of wearability 

Detachable. Can be hung anywhere on the body. During the creation, considering that this product is a product used many times, the design form is a device that can be removed at will, which can be reused many times, and can also be matched according to different clothes and hung in different places; Durable. In the process of creation, I use materials that can be disassembled for washing, so that they will not be damaged when they are cleaned and used many times; Lightweight. In the design process, because it is about the items worn on the body, it is necessary to choose a key chain that can not feel the weight, so that the wearer can walk more freely; Beautiful. Because it is exposed outside the body and the position of clothes, I designed the lovely panda head when designing this product.


First of all, I sketched out the appearance, which is the appearance of a panda, and then sewed and edited it according to the materials. Other designs are the same as those in the previous proposal.


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Final Project Images

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Parts List

glue gun
Sewing box
circuit playground express


Circuit Diagram


Reflections & Next Steps 

During the production process, I encountered many difficulties, such as how to fix the circuit and how much time the flicker is appropriate and will not be regarded as disturbing. When designing the collision, I hesitated about whether to add sound and finally canceled it because I thought that adding sound might frighten the other party. It’s not an altruistic work. When I have the opportunity to continue the production later, I want to add a few more steps to add the interest of the whole work, such as adding LED lights to the ears to add a lovely atmosphere, or adding a little light to the eyes, or making the production more streamlined in terms of switches.

Resources & Related Works 

Stephen. (2018, June 6). Natural disaster sensor project with Circuit Playground Express – tutorial Australia. Core Electronics. Retrieved April 22, 2022, from

Adafruit Circuit Playground Express – blocks / Javascript editor. Adafruit Circuit Playground Express – Blocks / Javascript editor. (n.d.). Retrieved April 22, 2022, from

Expressive Wearable Assignment2 – Zhiye Yang



My work is called “Bunny communication headband” This is a hairband with rabbit ears.  The use of this device is very simple, when using the rabbit ear to fold down (external switch), and two different colors will be displayed on both sides. In the process of chatting with others, if the right ear is folded off, the hat will light up pink, which means that you feel very comfortable when talking with each other and are very interested in the topic of communication. When the conversation friends see this color, they can continue to communicate. However, when the left ear is folded off, the hat will turn blue, which means that the mood is very calm at this time. The user is not interested in the dialogue, the people that see this light can change the content of the topic after seeing this message.


In fact, this work is intended to help people who can’t express their ideas freely in the social process. In life, we are always embarrassed to say what we think. We are afraid that others will be hurt by our words, and this hairband can solve this problem. Let users or users’ communication objects better carry out effective and comfortable communication processes.


First of all, I used the only hairband at home and wanted to refit it into a wearable object. I did a sketch painting.

The initial idea was that the left and right ears glowed, but I felt that I needed a flexible and lovely feeling, so I changed the device to put it in the hat.











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after testing, I start sewing.

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final project images

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Parts list
Circuit Playground Express
Conductive fabric
Glue gun
Needle and thread
Wool felt
magnetic tape
Conductive thread


circuit diagram



Reflection and next step
In this assessment, I think it is very difficult to turn ideas into reality. For example, the placement or size setting of parts is very important for the production of works and also how to cover the conductive thread. I think more accurate marking and careful arrangement of work details are what I lack in this assignment. During the whole production process, I felt that I didn’t completely turn my ideas into reality, which made me a little sorry. In the next learning process, I will make more preparations and spend more time studying the details of each production. Especially when I have ideas but have no ability, the positive inquiry is what I need to do next. Generally speaking, this work gives me a new understanding of wearable art. I enjoy the production process very much.

Resources and related work
Kate Hartman: The Art of Wearable Communication – YouTube. (n.d.). Retrieved February 24, 2022, from


Anne Trafton | MIT News Office. (n.d.). A wearable sensor to help ALS patients communicate. MIT News | Massachusetts Institute of Technology. Retrieved February 24, 2022, from

Wigmore, I. (2019, January 30). What is wearable technology? – definition from\\\\\\\\\\\\\. SearchMobileComputing. Retrieved February 24, 2022, from


Hachisu, T., Pan, Y., Matsuda, S., Bourreau, B., & Suzuki, K. (2018, June 28). facelooks: A smart headband for signaling face-to-face behavior. Sensors (Basel, Switzerland). Retrieved February 25, 2022, from