Indoor CO2: Loading...

Data from all myairs

About myair and CO2

Myair is a new low-cost air quality sensor measuring carbon dioxide (CO2), Total Volatile Organic Compounds (TVOCs), temperature and humidity.

65 myair devices have been installed in all teaching spaces, meeting rooms, open plan offices and selected individual offices throughout Built Environment's home in the Red Centre West Wing, UNSW Sydney.

Through their LED displays, the devices give room occupants immediate feedback on the current CO2 level. Data is also logged to a publicly available server for research and teaching on indoor air quality and data analytics.

All components of the project are open source, including hardware schematics, firmware, server back-end, this front-end and sensor data. Links will be provided here when published.

CO2 is a colourless odourless gas occuring naturally in Earth's atmosphere at trace levels.

Each carbon dioxide (CO2) molecule has a carbon atom double bonded to two oxygen atoms.

CO2 traps radiant heat, as John Tyndall demonstrated in the 1860s.

Indoor CO2 ranges from atmospheric 410 ppm (parts per million) to over 2500 ppm depending on room occupancy and ventilation.

Research indicates that elevated CO2 significantly impacts decision-making above 1000 ppm and has a large impact at 2500 ppm.

If the myair in your room changes colour to yellow or beyond, try freshening the air by opening a window or door.

The Earth heats up when CO2 is released into the atmosphere by burning fossil fuels or clearing forests.

For the last 10,000 years, global CO2 was fairly stable at 260-275 ppm. This Holocene epoch included all of recorded history and also enjoyed stable global temperature (± 0.5°C), sea levels and coastlines.

But since the industrial revolution, CO2 has risen ever more quickly and has now reached 410 ppm in our atmosphere, 50% higher than at any time in at least 800,000 years.

In September 2018 the United Nations Secretary-General declared this a "direct existential threat" saying:

"If we do not change course by 2020, we risk missing the point where we can avoid runaway climate change, with disastrous consequences for people and all the natural systems that sustain us."
Myairs in care 🚑 (26 Feb 2019)
  • myair-3: under repair
  • myair 20: to be installed
  • myair 35: power adaptor missing

Myair fall down! 😞

Turns out the adhesive we used to attach the first batch of myairs to the wall does not work reliably on wood. This has affected some but not all myairs.

💡 We have a solution: hooks. If your myair falls off the wall please let me know – citydata@unsw.edu.au – and I'll come by and fix it.

Missing parts 🕵

Noticed something that isn't there? We've had one or two power adaptors go missing, so remember: if you don't see something, say something.

Credits

The myair air quality sensor was designed by Snepo and City Futures Research Centre based on the Smart Citizen project. The devices were built in Sydney by Snepo.

This front-end was coded by Jonathan Doig for City Futures Research Centre.

Myair data is stored on CitySensors, City Future's instance of the thingsboard Internet of Things (IoT) platform.

Purchase of the myair devices was funded by UNSW Sydney's Research Infrastructure Scheme. Installation was funded by Built Environment, UNSW Sydney.

Your questions and feedback are welcome! Please email citydata@unsw.edu.au.