Do you sometimes feel tired during meetings? Or do you sometimes have a headache after work? Do you want to change that? Then, this video can be interesting for you because we will measure harmful gases in your environment, which can trigger both. We use one ESP32 and two ESP8266. The sensors are: Winsen MH-Z19, Sensirion SGP30, and SCD30 (Measuring CO2 Tutorial) In this video: - Focus on indoor climate - Focus on gases where the primary cause is humans - Look at CO2 its influence on indoor air quality - See the relationship between CO2 sensors and global warming - Use a second way to assess indoor air: VOC or eCO2 - And we will build sensors to transfer values to Grafana I am a proud Patreon of GreatScott!, Electroboom, Electronoobs, EEVblog, and others. Links: CO2 Sensor MH-Z19: http://s.click.aliexpress.com/e/BPW05WCC Co2 Sensor SCD30: https://www.digikey.com/product-detail/en/sensirion-ag/SCD30/1649-1098-ND/8445334 or http://s.click.aliexpress.com/e/qH1DdGQk VOC Sensor SGP30: http://s.click.aliexpress.com/e/pzO8niqc VOC Sensor MICS-6814: http://s.click.aliexpress.com/e/McOJo9Zq ESP32: http://bit.ly/2r45Ho2 or http://s.click.aliexpress.com/e/FecFfyug ESP8266: http://s.click.aliexpress.com/e/4TKkmNpe Raspberry Pi Playlist:    • Raspberry Pi   Sketches: https://github.com/SensorsIot/CO2-Sensors/tree/master #CommissionsEarned: The links above usually are affiliate links which support the channel (no additional cost for you). Supporting Material and Blog Page: http://www.sensorsiot.org/ Github: https://www.github.com/sensorsiot My Patreon Page: https://www.patreon.com/AndreasSpiess My Bitcoin address: 19FSmqbBzb5zsYB1d8Bq4KbxVmezToDNTV If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel For Banggood https://bit.ly/2jAQEf4 For AliExpress: http://bit.ly/2B0yTLL For ebay.com: http://ebay.to/2DuYXB https://www.facebook.com/profile.php?id=100013947273409 https://twitter.com/spiessa https://www.instructables.com/member/Andreas%20Spiess/ Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my primary job