capSense and organic materials

In this assignment, you will play with organic materials as part of your Arduino circuit. You will also learn how to install and use external libraries.

Download and install Arduino’s capacitance sensing library. This library will enable you to measure the electronic capacitance of organic materials such as foods, plants, or the human body.

Create a circuit and code that measures and responds to the capacitance of organic materials. You can think about building a simple food sensor that recognizes different types of foods based on their electronic capacitance; you can create a circuit that responds to human touch; or you can use organic materials as intermediaries between the Arduino and the person (for instance, detecting when a person touches a plant).

Your project must have some sort of creative output, beyond just the Serial print! You can use Max to create sound or video feedback, or add LED’s, piezo, vibration, or muscle wire output.

Document your project on the class blog under the “capSense” category. Include a photo or video, a diagram, and a brief description (2-3 sentences).

To receive full credit for the project, your circuit should have an interesting output based on the capacitance of some organic material(s). Consider using the output modalities we have learned so far (varying the behavior of LEDs, sound or vibration feedback, or muscle wire motion based on input from organic materials).

This assignment is worth 4 points
2 points for creating an Arduino circuit and code for responding to the capacitance of organic materials
1 point for clear documentation that includes a description of how you made your project
1 point if your capSense project is creative/fun
1 bonus point if you used MAX MSP with this project

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