Showcase

The embroidery hoop serves as a motion sensor and carbon dioxide detector to flash lights at the presence of somebody (or many bodies) in a room. The closer someone is, the more pixels lights up. The more people breathing out carbon dioxide, the bluer the lights become.

Demonstration of motion detection.

Demonstration of color change after exposure to CO2 (a lighter).

Process

Ideation

I went through a couple iterations and ideas as detailed below:

Brainstorming

Final Project Proposal

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Timeline 4/14 - submit final project proposal [test Arduino attachment/reactivity, reconstruct hoop] 4/23 - check-in w/ Sudhu or Shm [code website and finish] 4/28 - finish project! 5/6 - Jacobs Final Project Showcase

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Prototyping

Similar to my P3: GLOW project, I divided the designing into 3 main steps: constructing the embroidery hoop, wiring all the parts and sensors together, and testing the coding.

Embroidery Hoop Construction

I used the deconstructed embroidery hoop from P3 and carefully moved the Arduino, wires, and sensor components underneath the chopstick which served as a support component for all of the hardware.

Wiring

I ended up using only the ultrasonic sensor and Flying Fish MQ gas detector (for CO2) in my final construction. These tutorials were particularly helpful in figuring out what wires and pins I needed:

https://github.com/loopstick/ArduinoTutorial#ultrasonic-distance-sensor---hc-sr04

https://medium.com/@androidcrypto/mq-2-sensor-liquid-petroleum-gases-lpg-and-other-gases-usage-with-arduino-r4-wi-fi-87b6381b4eb3[https://docs.google.com/spreadsheets/d/1FCevS4d-0PS1t2NeGHq3AgpFlXufA_-X1SYZuwzGnf8/edit?usp=sharing](https://docs.google.com/spreadsheets/d/1FCevS4d-0PS1t2NeGHq3AgpFlXufA_-X1SYZuwzGnf8/edit?usp=sharing)

Fueled by many fruit bowls and late night coffee sessions, I worked on attaching the different sensors and securing the parts so they would be held down within the frame.