Well, im interested in how temp and hum change over time, what is the overshoot of hitting setpoints with certain devices (example: when you stop dehumidifying it still goes under a lil bit more), what happens when you turn off lights (ppl say hum spikes) etc... i need this to see if i need to implement PID control or not... Im designing a specific system with 4 flower grow tents, 1 mother, 1 veg, but basically each grow tent is one master which has its own temp, hum, co2 setpoints, light schedule and nutrient regime... i made 3 successfull grows and 2 failed ones (30 grams and 0 grams), for medicine for my friend (she passed away)... currently im at my parents house (guess why) so growbox is no no for me, all the tests i do is with led diodes and hardcoded random *inputs setpoint values that user would change as it wants*...
setup (per growbox):
master - ESP32
8 channel relay board (humidifier, dehumidifier, intake and outtake hydroxyl generator (my own design), CO2 solenoid (vents inside are 24/7 so prob no relay)
DS3231 RTC
RS485 communication module
sensor node - Arduino Nano
SHT35 for temp and hum
SCD30 for CO2
MLX90614 for IR measurement of leaf temp
DPS310 for ambient pressure calibration of SCD30
RS485 communication module
light node - Arduino Nano
4 mosfets for white, red, infrared leds and UV dimmable ballast with needed voltage converters
RS485 communication module
nutrient node - to do
and then each growbox would be connected to openHab via rs485 connection (PJON protocol) that has phone app, web interface and data logging...
so far environment control is prototyped and tested, i am succesfully achieving rh and temp calibration inside vpd range, making uv schedule calculation so that process starts in the middle of growth, and starts in a way that user picks cycle number, minutes on, and minutes off, so that lets say in cycle of 12 hour schedule, choosing 3 x 10 minutes on, 3 x 10 minutes off uv lights get on at 05:30 of light schedule, and finish at 06:30 of light schedule, and ir lights after main lights go on for 10 minutes or whatever user chooses (can be during or after for emmerson effect, and also user can choose all of its own variables, or just low, medium and high reccomended values), and all that works in anytime of day and any duration (noob proof)...
next thing in project is nutrient doser, which has to filter with ro, dose each nutrient, measure ph and ec, and circulate until last 10 or 5% and then to drain, then wash plants and all tanks with h202 while new batch is cooking, then continue... for this part i need a prototype machine with solenoids and pumps, (cant do with dummy devices), i have final sketch (which ill prob change 3 times) but since corona my budget went into alaskan night temperatures range, so im messing with openHab for now, but also, waiting for 3.0 version and UI redesign to make the thing i want... that will give me web acces, UI interface and database logging...
point of machine is to have perpetual production of medical plants for medical users without too many job around its parts (im trying to achieve rez self-cleaning using only chem nutes and h202 but again, until i put this to test with legal plants i cannot say ill be succesfull at that), basically plug and play ready system of devices, so that users dont have to worry, and just pluck a leaf or two... i need those logs just to try to predict what happens inside growtents and grow rooms (when i grew i just had fans 24/7, soil hand feed so no data there)...
