Full Kit includes:

• 1x 64x32 RGB LED matrix display (~12.5 x 6.5 inches)
• 1x TeensyVisualizer PCB
• 1x Components bag (everything you need to populate the PCB)
• 1x Teensy 4.0 MCU
• 1x SmartLED Shield
• 1x 5V Power Adapter

Only a soldering iron is required to solder the main PCB components, everything else is included. Solder, plug the modules into one another, and the TeensyVisualizer is up and running!

What is it?

An audio spectrum analyzer that displays frequency bins of line-in or built-in microphone input on an RGB LED Matrix display. 14 peak-detected bands are displayed across a 40Hz - 16kHz range creating a satisfying light show.

Features:

• Retro look and entirely hardware based, with 14 clock-adjustable channels
• Automatic scaling to different display sizes
• Supports 3.5mm audio input with direct output, or built-in microphone using input switch
• Dual amplifiers with adjustable gain and test points
• Built-in 5V DC jack with on/off switch
• Onboard button to switch display modes
• Onboard rubberized knob to control display brightness
• Non-volatile setting storage when unit is powered off
• Automatic shut off when no input detected

What makes it special?

This PCB uses all hardware-based frequency analysis instead of software-based FFT like most Teensy-based audio visualizers. The two MSGEQ7 ICs compute frequency bins and factor in exponential decay, creating a much more realistic representation of audio than traditional FFT approaches. The onboard switch allows use of the built-in microphone or 3.5mm audio input+output, both feature adjustable gain independent from the input volume.

You can adjust the brightness of the display with the onboard rubberized knob, and press the built-in button to change display modes. You can cycle between different types of spectrum analyzers and different color gradients, and your settings are all stored in permanent memory so you don't have to cycle back to them every time the unit powers on. The board also features automatic shut off when no input is detected for convenience.