330 Infinity Core
330 : Infinity Core
- Author: FilteredNoise
- Description: Audio visualizer and algorithmic pattern generator
- GitHub repository
- Open in 3D viewer
- Clock: 50000000 Hz
How it works
The Infinity Core is a hardware-native audio visualizer. It processes a digital audio trigger pulse through a custom ASIC architecture comprising:
- Heartbeat Engine: A master 24-bit counter that derives all timing signals for PWM and SPI.
- PWM Engine: A digital comparator that drives the infinity mirror LED brightness.
- SPI Shift Register: A hardware-native serializer that pushes graphical pixel data directly to an OLED display without software, RAM, or a CPU.
How to test
- Apply 3.3V/5V power to the breakout board and connect the SPI OLED display to the designated SPI pins (SCK, MOSI, DC).
- Feed a digital "beat" pulse into
ui[0]. - Observe the SPI OLED display rendering geometric patterns and the infinity mirror LEDs reacting to the trigger pulse.
External hardware
- SPI OLED Display: 128x64 pixels (SSD1306-compatible)
- Rotary Encoders: Two encoders connected to
ui[1..4]to adjust decay and pattern variables. - Potentiometer: Analog sensitivity control (fed through an external comparator circuit).
- LEDs: High-brightness LEDs for the infinity tunnel, driven by
uo[0].
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Audio Trigger In (Digital Pulse) | LED PWM Out | |
| 1 | Encoder 1 Pin A (Brightness/Density) | SPI Clock (SCK) | |
| 2 | Encoder 1 Pin B (Brightness/Density) | SPI Data (MOSI) | |
| 3 | Encoder 2 Pin A (Decay Speed) | SPI Data/Command (DC) | |
| 4 | Encoder 2 Pin B (Decay Speed) | SPI Chip Select (CS) | |
| 5 | Debug Heartbeat Blink | ||
| 6 | |||
| 7 |