Colored lights bouncing to the music is a must have for any party. Now you can bring the party to your NeoTrellis M4 Express with the Audio Visualizer and Filter! With realtime Fast Fourier Transform (FFT) frequency spectrum analysis, the music coming into your NeoTrellis STEMMA adapter (from a computer, phone, Walkman, turntable pre-amp, etc.) is converted into colors and lights on the buttons to display the magnitude of the sound in different frequency bands.
Your music then passes through to the TRRS headphone jack on the NeoTrellis so you can listen to it. But that's not all! We've also built in a low pass filter and band pass filter so you can trigger awesome sounding effects at the push of a button!
We'll also build a small circuit with capacitors and resistors to center the incoming audio around the proper voltage for the NeoTrellis M4's analog-to-digital (ADC) converter.
In addition to the parts above you'll need some powered speakers or headphones to listen to the fly tunes.