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.
Control aquarium light - sunset, sunrise.
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.
Everybody hates it when they want the drink a cup of coffee and the water tank is empty. Here is the solution!
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