Fun learning project you can build out on a breadboard. From zaffaroby on Hackster.io:
This project allows you to turn Arduino into a 7 note keyboard. As you play, the music is recorded and you can listen to your performance again by obscuring the photoresistor. The photoresistor can be replaced by a button in a larger bread board.
It was a lot of fun when I had my 8 year old try playing Ode to Joy and then I made him listen to exactly what he had played !! His expression of wonder is the greatest satisfaction for the commitment and time spent on this project.
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