Summary: My plant collection was growing at an exponential rate (2021 pandemic times) so I wanted to build a system measure plant health. The final design measures ambient CO2, VOC, humidity, and temperature, as well as soil moisture and temperature. The microcontroller (STM32WB) interfaces directly with a Raspberry Pi that pushes the data further to a MongoDB server. Further details to come.
Includes CO2, VOC, humidity, temperature (ambient and soil), humidity, and soil moisture sensing.