I mean, I hadn't used flask since 2014, and had never used sqlite, plotly or an esp8266 (as a wifi transceiver) before. The project was intended as a learning e

I mean, I hadn't used flask since 2014, and had never used sqlite, plotly or an esp8266 (as a wifi transceiver) before. The project was intended as a learning exercise for playing around with those tools. Someone who just wants a CO2 sensor would buy https://www.amazon.com/dp/B0784TZFRW/ https://www.amazon.com/dp/B0784TZFRW/ , which isn't much more expensive than my pile of components and has way more functionality; and someone who was interested in the messing with technology aspect would want to figure it out for themselves. There's maybe 200 lines of code total, in the entire project. Someone who wasn't as determined to wander into blind alleys as I was could do it in a weekend.