This RFID enabled tag tutorial show a simple RFID circuit that connects to Arduino. The circuit will detect the RFID card and play a simple tone on the speaker when the registered card is tapped and will play another tone when un-registered card is tapped.
I had stumble across a simple circuit to simulate RFID lock and unlock via Instructables from educ8s and his website. So I used his code with little modification and added my own code from the previous post on simple Super mario speaker song, and this circuit was born.
Continue reading RFID enabled tag
The other day I stumble upon a simple circuit to create a speaker song. So naturally I try it out and it seems to be quite simple, but it was the sponge bob theme song, so I thought what a boring song. I want a more fun song, and what is more fun and nostalgic than the super Mario theme song, and I manage to find another blog post on Super mario theme song. I analysed the code and found a few improvement that can be made, so naturally I modify the code and factoring he function call. So the Mario speaker song was born.
So here are the circuit connection diagram:
You only need to connect the speaker to GND and another through 1K resistor through pin 3 of the arduino. Once done, you can upload the following code. Continue reading The simplest Mario speaker song circuit