Control aquarium light - sunset, sunrise.
Working with RFID is so much fun, you can do alot with these tags like controlling relay, turing lights on off, access control, door lock.
Everybody hates it when they want the drink a cup of coffee and the water tank is empty. Here is the solution!
Some pretty cool automated functions and easily adjustable parameters. Not bad for a small budget!
If you ever wanted to build your own smart switch, please read the story below.
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