Final Project Concept: Intelligent Interactive Environments
1. Design Sketches & Concepts
🛋️ Functional Interactive Chair
Inspiration: My inspiration came from sleep-assisting beds at an elderly care product expo. These beds help users fall asleep through gentle rhythmic shaking. Combined with the right temperature, music, and lighting, the experience is highly effective.
Core Features: * Rhythmic Support: Integrated airbags at unsupported joints to provide gentle up-and-down movements. * Multisensory Therapy: A combination of temperature control and ambient music to address sleep issues. * Evolution: While I have designed chairs before, this version focuses on functional interaction rather than just static form.
but for this idea i have new thinking:
🌙 Smart Stillness Feedback Cushion
A spatial interface where connection is felt, not defined
Assignment
- What does it do?
- Smart Stillness Feedback Cushion is an interactive cushion built around still sitting, posture adjustment, and self-observation. When the user sits down, the cushion reads body pressure and posture change through sensors, then shows the current state through light feedback. It does not only show whether someone is sitting; it also helps me observe whether I am still adjusting, whether my body is becoming more stable, and whether I have entered a quieter sitting state.
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The effect is clearer when the cushion is used in front of a mirror or in a darker environment, because the user can see the light change more clearly and use it as a simple way to observe their own state. At the same time, the light can also let other people know that the user is sitting quietly and does not want to be disturbed at that moment.
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Who's done what beforehand?
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In the earlier development, I completed project direction adjustment, posture-related testing, form iteration, structural prototyping, sensor testing, and the first stage of organizing the electronics system.
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What did you design?
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I designed the overall concept, cushion form, sitting feedback logic, sensor input method, light response method, and the internal organization of the electronic system.
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What materials and components were used?
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The project uses a control board, pressure sensors or a flexible sensing structure, LED strips, diffuser materials, foam, covering materials, 3D printed parts, and power and wiring components.
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Where did they come from?
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Electronic parts were purchased from standard suppliers, structural parts were modeled and fabricated by me, and the soft materials came from local sourcing and studio stock.
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How much did they cost?
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The total cost will be summarized in the final BOM.
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What parts and systems were made?
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The project includes cushion form development, posture-related testing, sensor input testing, light feedback logic, structural prototyping, and internal electronics organization.
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What processes were used?
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The workflow included CAD modeling, 3D printing, material testing, sensor wiring tests, light debugging, programming, and full prototype iteration.
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What questions were answered?
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The project asks whether a cushion can use structure, sensors, and light feedback to make sitting, staying, posture adjustment, and self-observation into a clear and readable interaction.
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What worked? What didn't?
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What moved forward well includes posture and form adjustment, sensor testing, and electronics organization. What still needs work is sensing stability, wrapping details, light visibility in different environments, and full assembly refinement.
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How was it evaluated?
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It was evaluated through posture testing, sensor reading observation, lighting behavior, visibility in front of a mirror and in darker environments, structural installation, and overall user experience.
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What are the implications?
- This project helped me turn an earlier broad idea into a real interactive object centered on sitting, observing my own state, adjusting posture, and communicating that state to others.
Overview
This revised version of the project is now clearly defined as Smart Stillness Feedback Cushion. Instead of keeping the description broad and scattered, I brought the project back to a more direct and buildable object: a cushion that responds to sitting, posture adjustment, staying, and self-observation through sensors and light.
The biggest change in this stage is that I started treating posture and self-observation as part of the design itself. I am no longer only checking whether the sensor can be triggered or whether the light can turn on. I am now observing how different sitting positions, weight shifts, and staying patterns affect the form, the force distribution, and the electronic feedback of the cushion. When used in front of a mirror or in a darker environment, the light change becomes easier to read, so the user can observe whether their body is still adjusting or becoming more stable.
The project also has a simple social function. When the light shows a quiet sitting state, it can let people nearby know that the user is currently focusing on sitting and does not want to be disturbed. This is not meant to block other people out, but to make the user's current state visible in a simple and gentle way.
At the same time, the project has already moved into the stage of organizing the internal electronic system. Alongside adjusting the shape and sitting experience, I am also arranging the sensor input, control logic, light response, and internal connections so that the structure and the electronics can work as one system rather than as separate experiments.
Project Description
Summary: Smart Stillness Feedback Cushion is an interactive prototype built around sitting, staying, posture adjustment, and self-observation. It uses sensors and light to turn body state into visible feedback, and it also shows others that the user is sitting quietly and does not want to be disturbed.
Concept
| Aspect | Description |
|---|---|
| Project Name | Smart Stillness Feedback Cushion |
| Main Action | Sit / Stay / Adjust posture / Observe self-state |
| Input | Pressure change / posture change / staying time |
| Output | Light response |
| Best Use Context | In front of a mirror, in a darker environment, or when the user needs quiet time |
| Personal Function | Help the user observe whether they are becoming still |
| Social Function | Let others know the user is sitting quietly and does not want to be disturbed |
| Current Focus | Posture adjustment, form refinement, sensor testing, electronics organization |
| Current Stage | Prototype integration and sensor testing |
| Next Step | Improve structure, stabilize sensing, organize internal system |
Meaning / Why It Matters
The meaning of this project is not to make a cushion that simply lights up. It is to make a cushion that helps the user observe their own state.
When sitting, it is easy not to notice that the body is still moving, adjusting, or not yet settled. The sensor and the light make these changes more visible. Especially in front of a mirror or in a darker space, the user can see the light change and understand the process of sitting down, adjusting posture, becoming stable, and leaving.
It also has an external meaning. Sometimes it is difficult or unnecessary to directly say “please do not disturb me.” This cushion uses light status to make that message more natural. When a person sits on it and enters a quiet sitting state, people nearby can understand that this person is organizing their own state and should not be interrupted suddenly.
So the project has two layers of meaning:
| Meaning | Explanation |
|---|---|
| For myself | It helps me see my posture change and sitting state |
| For others | It lets others know I am sitting quietly and do not want to be disturbed |
| For the object | It turns the cushion from a support object into a feedback object |
| For the project | It connects form, sensing, light, and electronics into one clear logic |
Final Outcome
At the current stage, the project is no longer just a simple proof of one function. The main focus now is to develop the cushion as a complete object: improving the sitting posture relationship and outer form, testing how the sensors behave in real use, and organizing the light feedback and internal electronics layout at the same time.
When the user sits down, the cushion responds to the pressure change with light. When the user is adjusting posture, the light can change. As the posture becomes more stable or the staying time becomes longer, the feedback state also becomes more stable. When the body leaves or the pressure drops clearly, the system shifts to another feedback state.
This feedback is easier to observe in front of a mirror or in a darker environment. In this way, the user is not only using the cushion, but also observing their own state through the cushion. At the same time, the light can act as a simple external signal to show others that the user is sitting quietly or does not want to be disturbed.
System Overview
| Stage | Description |
|---|---|
| User Action | Sit down / adjust posture / stay / leave |
| Sensor Input | Detect pressure and body-position change |
| Control Logic | Read values and switch response states |
| Output | Light turns on, changes, and fades |
| Self Observation | User observes light change in mirror or darker space |
| Social Signal | Light indicates a quiet / do-not-disturb state |
| Design Goal | Let the cushion visibly respond to sitting behavior and personal state |
Interaction Flow
Idle ➡ Sit Detected ➡ Posture Adjusting ➡ Stable Sitting ➡ Quiet State Visible ➡ Leave ➡ Fade Out
Form Development and Sitting Adjustment
One of the most important parts of this revised stage is that I started looking back at the whole object through posture improvement and form adjustment. Once the cushion is actually used, many issues turn out not to be only about electronics, but about shape, support position, force path, and material thickness working together.
So I no longer treat the cushion as just a shell with light and sensors inside. I treat it as an object that directly touches the body and needs to be adjusted accordingly. Sitting angle, body balance, edge support, and surface softness all influence the experience, and they also directly affect the sensor data.
Form Adjustment Notes
| Item | Current Adjustment |
|---|---|
| Seat Shape | Refine the sitting surface so the body can stay more steadily |
| Support Area | Observe the weight concentration area and avoid overly local pressure |
| Surface Thickness | Balance comfort and sensing sensitivity |
| Outer Form | Make the object feel more unified, not just like an electronics shell |
| Light Visibility | Consider light visibility in front of a mirror and in darker environments |
Summary: Posture adjustment is not an extra part. It is the basis of whether this project can really work.
Hardware & Electronics
Bill of Materials (BOM)
| No. | Component | Qty | Function |
|---|---|---|---|
| ① | Main control board | 1 | Read sensor input and control output |
| ② | Pressure sensor / sensing layer | 1 set | Detect sitting and posture change |
| ③ | LED strip / light module | 1 | Provide visual feedback |
| ④ | Diffuser material | 1 set | Soften and spread the light |
| ⑤ | Foam / soft support layer | 1 set | Build cushion thickness and support |
| ⑥ | Outer covering material | 1 set | Wrap and finish the surface |
| ⑦ | 3D printed structural parts | 1 set | Hold electronics and define inner layout |
| ⑧ | Battery / power module | 1 | Supply power |
| ⑨ | Wires and connectors | 1 set | Internal electrical connection |
Electronics System Organization
Different from the earlier stage of local testing, I now care much more about whether the electronic system is actually organized well. That means not only that the sensor is connected and the light works, but also that the internal structure is clear, the module positions make sense, and later maintenance remains possible.
Electronics Structure
| Part | Role | Current Focus |
|---|---|---|
| Sensor Layer | Detect body pressure | Improve reading stability |
| Controller | Process input and control output | Organize wiring and logic |
| Light Module | Show system feedback | Match different sitting states |
| Power System | Support stable operation | Arrange power method |
| Inner Wiring | Connect all modules | Reduce messy internal layout |
The current work has moved from testing single parts toward organizing how the whole internal system fits together. This step matters because once the cushion form is more closed, debugging and future iteration become much harder if the electronics are still messy.
Sensor Testing
The project has already moved into the sensor testing stage, and the focus is no longer only whether the system reacts, but whether it can respond to real posture changes.
I am observing:
- the first pressure when a person sits down
- the change when the body moves left or right
- the fluctuation during small posture adjustments
- the stability after staying for a longer time
- the recovery state after leaving the cushion
- whether the light change is readable in front of a mirror
- whether the feedback becomes clearer in a darker environment
Sensor Logic Table
| State | Sensor Condition | Feedback |
|---|---|---|
| Idle | No pressure | Light off / standby |
| Sit Detected | Initial pressure appears | Light on |
| Posture Adjusting | Pressure shifts or changes | Light changes dynamically |
| Stable Sitting | Pressure stays steady | Light becomes smoother |
| Quiet / Do-not-disturb State | Stable sitting continues | Light keeps a clear calm state |
| Leave | Pressure drops | Fade out |
Summary: The current goal is no longer “can the sensor be triggered,” but “can it read posture change and turn the sitting state into feedback that both the user and others can understand.”
Light Feedback
The light in this project is not just decoration. It is the way the cushion shows posture change, staying condition, and the state of not wanting to be disturbed.
Light Response Plan
| Situation | Light Behavior |
|---|---|
| No one sitting | Off or very dim standby |
| User sits down | Light turns on |
| User adjusts posture | Brightness / rhythm changes |
| User stays still | Light becomes slower and steadier |
| Quiet state continues | Light keeps a clear stable state |
| User leaves | Light fades out |
I want the light change to be clear but not overwhelming. The point is not to create a complicated animation, but to let the user feel that the cushion really noticed the action of sitting, moving, and staying. It can also show others that I am sitting quietly and should not be disturbed for the moment.
🎨 Research: Light Art & Perception
The development of contemporary light art is deeply influenced by the Light and Space Movement, placing a core emphasis on perceptual experience.
1. James Turrell
Based on perceptual psychology, Turrell treats light as a physical, volumetric substance. * Representative Work: Ganzfeld Series * Concept: Eliminates the sense of depth through uniform colored light, allowing the audience to experience “seeing oneself seeing”.
2. Olafur Eliasson
Eliasson specializes in simulating natural phenomena to investigate the relationship between humans and their environment. * Representative Work: The Weather Project * Concept: Created a gigantic indoor sun at Tate Modern using monochromatic lights and haze.
3. TeamLab
An internationally acclaimed digital art collective integrating lighting, projection, and sensors. * Representative Work: The Infinite Crystal Universe * Concept: Employs tens of thousands of LED nodes to alter patterns in real-time based on audience movement.
4. Dan Flavin
A pioneer of light art who defined architectural boundaries using industrial fluorescent tubes. * Key Focus: Using standard industrial materials to transform the perception of architectural space.