I was looking at Piccolo, but it appears to be obsolete.
Most music beginner projects I found need analog out into Audrino.
Any advice or instructable on a simple LED music visualizer project where when the child plays the piano, a microphone picks it up and then flashes LEDs based on the music?
Would work with any sound, not just music.
I believe you want what is refereed to as a color organ, here is a link you can check out. https://www.instructables.com/Arduino-Color-Organ/
Here is one without using an Arduino, it has been around for many years. Light Organ - Color Organ - 5 Channel [XLO-5] – Xkitz Electronics
There are lots of "sound sensors" or "microphone boards". If you are in the U.S., SparkFun and Adafruit are reliable suppliers.
But there are different kinds of sound sensors so make sure you get one that puts-out an analog audio signal. It will put-out a biased line level signal that can feed-into an Arduino analog input.
I have this one. It works OK, but it's not sensitive to quiet sounds so it might have to be close to the piano.
You should be able to find lots of audio visualizer "example projects", or just to get off the ground, take a look at my World's Simplest Lighting Effect. (It works with a microphone board or with direct audio.)
You might also look-into the MSGEQ7 chip. It would go between the microphone board and the Arduino. It gives 7-frequency bands of audio levels so you don't have to do the FFT/FHT frequency analysis in software.
+1 for the MSGEQ7 idea.
For simplicity, I also suggest LED strips or matrix based on WS2812 LEDs. These can consume a lot of current, so use an external 5V power supply with them.
I can't recommend any particular project that uses these 2 components, but at least you have some search terms to look out for.
Meowsic for the young.
Karaoke for the young at heart
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