#17 (Mostly) Accurate CO2 monitor with pretty graphs (using MH-Z19 and esp32)

In this video I'm building a carbon dioxide monitor using a MH-Z19 CO2 sensor. Although it's not as precise as $500 devices, I compared it with a hand-held Temtop monitor, it was within about 5%. The paper mentioned: https://www.mdpi.com/1996-1073/13/22/6099 ESP32 sensor code: https://github.com/ungineer/multisensor InfluxDB: https://github.com/ungineer/localinflux Installing docker on Pi: https://www.youtube.com/watch?v=zAKHS6j5Jso ---Parts--- MH-Z19: - https://s.click.aliexpress.com/e/_DmWkp2b - https://amzn.to/40ZmQNO ESP32: - https://s.click.aliexpress.com/e/_DdrzxS3 - https://amzn.to/4jV8nKD DHT11: - https://s.click.aliexpress.com/e/_DmxEQMb - https://amzn.to/3Q12q0F HT7833: - https://s.click.aliexpress.com/e/_DEqwmUT - https://amzn.to/3Q1OKCU PCB: https://s.click.aliexpress.com/e/_mL8WvBh ---Tools--- ESP32 programmer: - https://s.click.aliexpress.com/e/_De5cy9N - https://amzn.to/4hllOl4 Atten Rework Station: - https://s.click.aliexpress.com/e/_DDjXGu7 - https://am