This project is for making a 32-band audio (music) frequency spectrum analyzer / visualizer using Arduino.

A stereo VU meter built with an Arduino Nano and two NeoPixel LED rings.

This is a another version of a music LED strip using Arduino Nano and an Electret Mic/Max4466 Amplifier.

Infinity mirror VU meter music equalizer is inspired by our infinity mirror clock project and we present it to our precious viewers.

Live performance oriented sequencer / arpeggiator for multiple synths control.

An internet radio player and DLNA audio renderer all in one.

Use your TV's IR remote to control the volume and mute of separate speakers without using the speaker's remote.

Using my cable TV remote, I can control the volume and select either TV or radio input to my hi-fi system with this little box.

A simple FM radio with a display that shows the frequency and audio amplifier.

It's a door bell with 48 melodies. It's a reverse engineering project. The initial project was made with 6802 microprocessor!

Here I've made a playing time counter for these cartridges.