I've already got one of my boards with a temperature probe for my light's heatsink and a temperature/humidity sensor at canopy level. I wrote my own code with Arduino IDE even though the last time I tried C/C++ I didn't get much further than hello world. But my knowledge of Python was surprisingly helpful. They report back to Home Assistant with MQTT so I can monitor it all. I want to add VPD calculations as well. I've got pseudo code already, so it shouldn't take long.
I wired up my Sonoff 4ch Pro to the LED driver, pump, and intake and exhaust fans today. To properly integrate it with Home Assistant with MQTT, I'm going to flash it to Tasmota when my FTDI module arrives. Eventually I want the fans and lights to respond to the sensors. And at some point I may need a dehumidifier, so the humidity sensor could be used for that, too.
I have some cheap 12v fans coming from eBay, too, that I want to use on my light fixture for some active cooling. Mine don't have PWM, though, so not sure what I'll do exactly. They're always useful for computers or my greenhouse.
