2 layers333.4 × 149.9 mm
2 layers39 × 38 mm
AudioVisualizerMatrix
EmanuelKrabNL/AudioVisualizerMatrixmake later
- Size
- 39 × 38 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 6
- Nets
- 18
- Pads
- 44
- Tracks, vias
- 110, 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 29 Oct 2026
- Updated
- 1 Nov 2026
Overview
AudioVisualizerMatrix is an open-source printed circuit board by EmanuelKrabNL, from the EmanuelKrabNL/AudioVisualizerMatrix repository on GitHub. It is a 2-layer board of 39 × 38 mm with 6 parts on 18 nets, routed with 110 tracks and 2 vias.
It is built around the 74AHCT125D. Its parts include 2 capacitors, 2 ICs, 1 connector and 1 switch.
Main components
1README
Readme.mdAudio Visualizer
i added matrix cuz that sounds cooler
What does it do?
Its an audio visualizer (duh), except it shows in waves, with dots, build on the max 7219 (4 in one) led matrix.
Features
well, it displays the audio of your pc in like, dots or something...
But what does it look like?
Why have i made it?
Because i have always wanted it, but i especially made it for the hack club half life program!
How does it work?
You plug in the pcb, run the script and voila: it displays your audio!
Parts
6| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 100nF | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 74AHCT125 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U2 |
| 1 | Conn_01x05 | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J1 |
| 1 | MOUDLE-SEEEDUINO-XIAO | CarePackage:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
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Questions
How big is the AudioVisualizerMatrix PCB?
It measures 39 × 38 mm and has 2 copper layers, 1.6 mm thick.
What parts does the AudioVisualizerMatrix use?
6 parts, built around the 74AHCT125D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the AudioVisualizerMatrix KiCad files?
From the EmanuelKrabNL/AudioVisualizerMatrix repository on GitHub, at the commit this page was made from: the board is Kicad files/audiovisualizermatrix.kicad_pcb and its schematic Kicad files/audiovisualizermatrix.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the AudioVisualizerMatrix design in my own project?
Its repository states no licence, so its author keeps all rights: ask EmanuelKrabNL before reusing the design.