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What do you need to create a smart greenhouse?
As I understand it, I need:
1.Arduino Uno
2.Solid state relay (2pcs)
3.For example, such a sensor t www.ebay.com/itm/1pcs-Waterproof-Digital-Thermal-P...
4.Some kind of humidity sensor
Do not tell me if this is enough for me or do I need something else?
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Light sensor for example.
The power supply is probably still for the Duina and the relay.
Maybe it will not be superfluous to display the parameters?
Transistors are needed for the relay, they cannot be directly controlled.
What are you planning to grow?
When I grew lemons, I needed a cabinet, a relay with a timer and a 500-watt lamp ... And an arduino is not needed here at all.
I would use ordinary 220 volt relays (by the way, take an assembly of several at once, where they are already soldered on the board, there are all the components that are needed)
Add another real-time clock module if you want to do something on a timer
Take this sensor
www.ebay.com/itm/1PCS-Arduino-DHT11-Temperature-an...
there are both temperature and humidity at once,
and I would also advise taking this thing to measure soil moisture (this is of course pampering, but if you really count everything - measure, you can generally grow anything in automatic mode)
www.ebay.com/itm/Soil-Hygrometer-Detection-Module-...
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