AIRMASTER 2000

WE CARE ABOUT THE QUALITY OF THE AIR - Measure and warn about office air quality

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Inspiration

Sometimes the air quality in rooms drops without anyone noticing. We thought it would be nice to have an alarm device to tell us, when the air quality drops below a certain threshold.

What it does

Our device constantly measures air quality and sends alerts by a slackbot and also sends realtime updates to a webpage frontend.

How I built it

We used an air quality sensor and a raspberry pi. On this raspberry pi we run an embedded software with elixir. With the live view of the phoenix framework we can send realtime websocket updates to a website. We also implemented a slack bot that can alert a certain slack channel.

Challenges I ran into

We wanted to get an analogue signal from the sensor, but somehow we did not receive anything. With this we could display a continuous curve of the air quality. We had to directly connect the sensor with a digital output which only sends a yes/no signal if the air quality is bad. Figuring out the embedded electronics was a real challenge to us, because nobody had experience here. We also used elixir, a functional language. Only one team member had experience with it before this project.

Accomplishments that I'm proud of

Our device is basically working and we created a nice promotional video for it.

What I learned

  • Basic wiring of embedded electronics and sensors
  • A new programming language and framework
  • How to get software running on a raspberry pi

What's next for AIRMASTER 2000

  • Get an analogue signal from the sensor to have a better understanding of the measure of air quality.
  • We could also use other sensors to measure if the air is to humid and might cause mold on the walls.

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