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Main focus Product design User research & UX/UI design Usability testing & Product/UX design User research Usability testing & Redesign Special Experience A: Exhibition space design Special Experience B: Interactive Technology design

Project Healax

4

Starship

10

Wheelchair JSM

16

Foodie Newbie

24

Sauce Volcano

30

Joint Graduation Exhibition

34

Shrine of tolerance / Holohome

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01

Product design Healax Smart heating pad

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02

User research & UX/UI design Starship Autism teaching aid APP

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03

Usability testing & Product/UX redesign Sunrise Medical Powered wheelchair joystick module redesign

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Power button

Handle

Understanding

Understanding

Task completion

E1 E2 E3 E4

I1 I2

I3

I4

Display bar Understanding

E1 E2 E3 E4

I1 I2

I3

Task completion (Hold) Task completion (Go forward)

I4

E1 E2 E3 E4

I1 I2

I3

Task completion (Turn right) Task completion (Reverse right) Task completion (Stop)

I4

The handle was considered to also be a handbrake for I4: Bicycle hand brakes.

E1 E2 E3 E4

I4

E2 did not use the handle to control directions: The seat adjustment buttons seemed to control directions.

E2 recognized the icons from their own wheelchair.

Understanding Task completion

Seat adjustment

E1 E2 E3 E4

I1 I2

I3

I3 struggled to reach the right blinker while reversing as the handle was deflected to the left.

I4

Headlight

Understanding Task completion (Tilt backrest)

The arrows shown on the display bar helped people to use the correct arrow buttons.

Task completion (Elevate seat)

“I really like the seat adjustment.” E1 E2 E3 E4

I3

Blinkers

Some participants paid little attention to the screen because they are focused on the road. “It is clear with only essential information.”

Task completion (Tilt whole chair)

I1 I2

I1 I2

I3

I4

The seat adjustment buttons seemed to be meant for other controlling functions: The arrow icons seemed to be directional controls. The seat adjustment buttons were small for people (E3) with MS. It was unclear that the user should press the arrow buttons, and when or which they should press: The indication was not sufficient and visibly clear. It was unclear about how to tilt the whole chair: It is not common to activate one single function with multiple buttons.

At first, I1 and E2 expressed the buttons were for navigating. E1 pressed the seat buttons but not the arrows. 6 participants did not use multiple buttons for the whole chair.

E2 recognized the icon from their own wheelchair.

Understanding Task completion

Speed adjustment

I1 I2

I3

I4

E1 E2 E3 E4

I1 I2

I3

I4

Horn I1, I3 and I4 instinctively pushed forward the handle to speed up.

Understanding Task completion Task completion (While driving)

E1 E2 E3 E4

E1 E2 E3 E4

I1 I2

I3

I4

thepurpose: switch’s purpose: The icons were unclear about its They were too small and did not have a distinctive shape.

I1, I4, and E1 did not know what it was for until they were asked to adjust the speed. I4 assumed it was an on/off switch at first.

Emergency light

E2 did not know such light existed, and E4 only needed the joystick to control their safety.

Understanding Task completion

The paddle switch was difficult to reach while driving: The position was too far from the joystick.

“I can easily reach the horn.”

Understanding Task completion

E1 E2 E3 E4

I1 I2

I3

I4

E1 is very much used to driving a wheelchair and recognized the icon clearly.

The icon seemed like a brake for I4: The warning sign gave anHandle impression of “stop” “stop”.

switch was small for people (E3) with MS. The paddle

Ergonomic position satisfaction

1

2

3

4

5

6

7

The handle is not stable or comfortable: (1) It is wiggly. (2) It is too wide for people with small hands. (3) It is too small for some people.

“The joystick handle shape gives a good feeling.”

“[The handle] is very comfortable but a bit too high.”

“The joystick module is too wide, and offers no stability for people with small hands.”

“I cannot rest on the handle. The joystick is too small.”

Display bar Visual access satisfaction

Blinkers 1

2

3

4

5

6

7

It is hard to see the information: (1) The content is too small. (2) The colors show little contrast.

“[The display bar] is clear for me but maybe not for older people.”

Physical access satisfaction

1

2

3

4

5

6

7

The accessibilty varies a lot among different users: The position is not universal.

“The screen is too small and narrow.” “It is hard to see.”

“[The blinkers] are easy to reach.” ”Good placement.” “If I'm going forward, it is easy to press [the blinkers]. If I am reversing it is difficult.” “Put blinkers in the middle then I could reach them without letting go of the joystick.”

Seat adjustment Physical access satisfaction

1

Speed adjustment 2

3

4

5

6

7

One might accidentally press other buttons: The buttons are too close. The seat adjustment buttons are difficult to reach while driving: The position is too far from the joystick.

“Most people don’t adjust their seat while driving.” “I like how the seat adjustment is all in one [group of] button.” “The space between the down button and the emergency light button is too narrow.”

Physical access satisfaction

1

Headlight/Horn/Emergency light 2

3

4

5

6

7

“The speed adjustment is practical, with one button.”

The paddle switch is not stable and can be too easily slided: There is no lock or scale on the switch.

“The position needs to be accessable and not too easy to be accidentally slided over.”

The paddle switch is difficult to reach while driving: The position is too far from the joystick.

“I can only reach [the paddle] when I’m moving forward.”

Physical access satisfaction

1

2

3

4

5

6

7

Some people find it difficult to operate: The buttons are small for people with MS.

“My hands are small and I can reach the buttons.” “They are good to reach.” “The buttons are too close to each other and to the handle.”

For some, the buttons are too close to the handle: Positioning and size.

“[The buttons] are too far away to reach while driving.”

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04

User research Foodie Newbie Food waste control product set

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05

Usability testing & Redesign Sauce Volcano Sauce packaging

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Special Experience A

Exhibition space design # Hashtag 2018 Joint-schools Graduate Exhibition Exhibition space planning

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Special Experience B

Interactive technology design The Shrine of Tolerance / HoloHome Experience design in an exhibition setting

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Chen Chou_Portfolio_2019.10  

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