Home assistant is a pretty basic open source Linux based system mostly used on microcomputers like raspberry pi for home automation. I've heard of people using it to control grow rooms at pretty large scale as well as general smart-home (much finer degree of control than say Alexa and able to control most third part systems).
What I need:
Temp/Humidity Sensor
Camera
Criteria:
As low price as possible without being a PoS
Well documented API/easily integrated into 3rd party systems
Able to withstand grow room conditions (occasional spikes in humidity, potential condensation if temp swings etc.)
Wifi &/or bluetooth capable (controller will be within range of the device for either)
I don't need these sensors to be able to control anything. Automation will come via bluetooth controlled outlets and home assistant. I'm cheap and don't want to replace any of the old "dumb" appliances until they die of natural causes.