Ozone Sensor - Potentially Genius™ | Digi-Key Electronics

In this episode, Tomorrow Lab collaborates with Dr. Elena Craft who is the Senior Director of Climate and Health at the Environmental Defense Fund. Dr. Craft’s expertise is on air toxics issues, focusing specifically on reducing criteria and greenhouse gas emissions from the energy and transportation sectors. She has worked to reduce emissions especially around port areas and environmental justice communities. She has also worked to reduce toxics used in shale gas drilling practices such as hydraulic fracturing. In her work, she advocates for policies that increase energy efficiency, reduce exposure to toxic compounds, and improve human health. In this episode, Dr. Craft came to the team with an idea about creating a real-time air quality monitoring device that can engage communities about the quality of their air and potential risks they may face.
To turn this into a potentially genius, the team from Tomorrow Lab gets to work by generating multiple sketches, schematics, and prototypes that leverage Digi-Key’s massive electronic component selection.
Product Links:
LOW CONCENTRATION OZONE GAS SENSOR
www.digikey.co...
MICRO SERVO SG-90
www.digikey.co...
SEEEDUINO
www.digikey.co...
BATT CHG SOLAR
www.digikey.co...
MINIBOOST
www.digikey.co...
Related Project Links:
www.edf.org/
Maker.io - www.digikey.co...
Digi-Key’s Blog - TheCircuit www.digikey.co...
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[@AdityaMehendale]

You might considering disabling the servo's power using a spare GPIO and a MOS-switch (only to update once per minute or so) - this should drastically reduce standby-consumption from the two servos. OTOH - a "speedometer" style stepper might be more suitable for the task - they are specifically made for such applications.

[@MikeTrieu]

Eh, I don't think the MIKROE-2767 is a "particle counter type sensor". From MIKROE's own website: "This gas sensor has a sensitive layer made of SnO2, which changes its resistance when exposed to ozone." So it's an electrochemical sensor.

[@pepingelardi1210]

You're totally correct. This was a bit of an editing mismatch. That section was recorded early in the process when we were considering measuring AQI on the whole. After further discussion with Dr. Craft we decided that ozone data was under documented. We selected that MIKROE sensor about a week later.