In this video I show you how to make an automated watering system based on a real time clock (RTC) module.
You can expand this project to control anything based on date/time, and you can add more switches, relays, etc.
For example, you can turn on and off your heater, lights, air purifier at a certain time of the day with this circuit.
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Source code and wiring diagram: https://curiousscientist.tech/blog/date-and-time-based-watering-system
You can buy the parts and help me at the same time by using my affiliate links: https://curiousscientist.tech/tools