Initial personal concept:

My personal initial concept was a device to help people decompress by hitting. Its main way of interaction is hitting. The game has a lot of natural environment scenes. In these environments, there are a lot of garbage and waste that are not in line with the current environment, making the current scene lose its original appearance. By hitting these garbages and wastes, the user eliminates them, and when all the garbages and wastes disappear, they will reveal the original beauty of the current scene.

Conceptual improvement:

This concept was obtained after my two groups merged into one group, based on the problem areas of our two groups, after thinking and research. But at the beginning of the idea, there were several problems that needed to be solved. The first problem is that because the main interaction method is hitting, many of the suggestions I get are wondering whether it will make users tend to be violent. Another problem is that there is a certain limitation in such an interactive way. Many suggestions are that there is no driving force that can be sustained and used for a long time.

After that, I started learning Arduino, because this concept uses speed sensor, vibration feedback device and distance detector, so I started to study in these directions.

Conceptual change:

Although I have started to study the related functions of this original concept, I have been studying and revising the concept itself. During the tenth week of concept exchange, when my concept was proposed again, it was difficult to find a motivation for users to use for a long time. I started thinking about changing this concept. Then I went to consult the teacher, and the advice the teacher gave me was for me to analyze from my problem domain and target users, and more mainly to target groups. After that, I did a round of questionnaire survey, and through the data obtained, I then analyzed it to get the current concept. The following is the information I collected through the survey.

Identify concepts and further research on concepts:

After analyzing and sorting the data obtained through the questionnaire, my concept became more and more clear. Then immediately I did an online interview in hopes of getting more comprehensive data Through the results of all user research and surveys, I got several results that are crucial to my prototype design:

-For college students, most of the pressure comes from studying.

-40 ~ 45min is an optimal period of learning. After 40 ~ 45min, after a period of rest, then learning will be more efficient.

-After a period of study, a period of 10 to 15 minutes is required to relax. This period should not be too much or too little

-Students usually choose to relax after studying, playing games or mobile phones. In most cases, games are a good way to relax.

Storyboard & persona:

So far, my concept has become very clear, and then I have done storyboard and persona for my concept.

Final Prototype：

My prototype is based on Arduino and Unity. My prototype is mainly based on two parts, one is distance detection, and the other is the connection between accelerometer and Unity. Using Ardunino to connect to Unity is difficult. You need to enter the code to connect Ardunino to Unity, and then embed the previous code in the Ardunino code that needs to be connected to Unity, and make sure that all parameters are consistent.

The distance detector I chose is a sound distance detector. This part of the connection did not encounter any difficulties and everything went smoothly. The accelerometer I chose is an MPU9150 with 9 axes, but I mainly use gyroscope components. There are many problems with connecting to Unity in this part. The first is that the connection is not stable enough, and the second is that the accelerometer is too sensitive to operate. After a lot of debugging, I ended up making the connection relatively stable. After debugging a large number of parameters of the accelerometer, I chose to reduce its output and the speed of receiving data. In this way to reduce the sensitivity of the sensor, it eventually becomes not particularly sensitive and can operate normally.