Portfolio - Time to Eat Fruit

Time to Eat Fruit.

2020.1.10

Advanced Physical Computing Jiatong Zhu

Background I find that people often forget to eat fruit after washing the fruit. When people remember to eat, the fruit has passed the best tasting stage.

But the surface of the fruit does not seem to be completely rotten, but people are not sure whether bacteria have grown on it or whether the inside of the fruit has rotten.

Most of people will choose to throw away or eat only a small part of it when they see "washed fruits forgot to eat after a long time. Only a small number of people are willing to eat the leftover fruits directly.

So in order to avoid this unnecessary waste, we should eat the washed fruit as soon as possible.

Direction I have observed the role that people’s perception of the ‘Fruit Historical Trajectory’ plays in ‘reminding oneself to eat fruit’.

Historical trajectory of static objects

Visible

Invisible

We forget to eat the fruit on the plate because we cannot perceive its historical trajectory in a short period of time.

If there is an alarm clock to remind me after a period of time, I know that it is time to eat fruit or the fruit will spoil.

The function of the alarm clock is like showing the shelf life of the fruit.

Historical trajectory of dynamic objects

Target Make the historical time of the fruit visible.

Solve the problem that people often forget to eat fruit.

Ideation Idea Convert the time of the fruit into the fruit plate degree of tilt As time increases, the degree of tilt increases (Similar to a balance scale) Maintain the weight balance of the fruit plate ďźˆmaybe the sound of falling objects is most noticeable. When the plate is tilted to a certain level, the sensor is triggered, and the plate will make a sound of " items falling " to remind the user that it is time to eat fruit.

Interactive Process

Circuit design Circuit Diagram

I need design two circuit.

- the circuit of 'force sensitive resistor controls server' - the circuit of 'the tilt sensor to control the buzzer' Test on Breadboard Link: https://youtu.be/fHhZyGt9Mlo

On Tinkercard There is no pressure sensor on tinkercard, temporarily replace it with a photoresistor.

Coding

Making

Model

Structure the circuit of force sensitive resistor controls server

the circuit of 'the tilt sensor to control the buzzer'

Soldering

Debug

Layout

Prototype

Source Code: https://github.com/Amelia-330/Creative-Physical-Computing/tree/Creative-computing-practice

Video Operation

Link: https://youtu.be/YDeIWR4SHbE

Scenarios

Link: https://youtu.be/12cRp_lS5Sc

Challenges

1. Through multiple iterations of the code, the number of revolutions of the server in different time is accurately controlled

2. The circuit does not work when the circuit is soldered to the board, I have learned to use LED to test each component for short circuits and open circuits after soldering.

3. The structure of the debugging model is consistent with the command of the code.

Countless unexpected errors occurred during the process of installing components on the model for testing.

Future develop

1. Add interesting sound output to tilt sensor 2. Further expand the interactive mode. To create an AI fruit plate, people can control the tilt of the plate through gestures, and further attract people's attention to the fruit on the plate.

3. Improve packaging design and appearance model, then develop into series products.

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