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Ocular Vox

Animatronic Skull Controller

A complete RP2040-powered animatronic skull controller with LCD eyes, audio-synced jaw, and SD card audio playback. Built for haunters, prop makers, and Halloween enthusiasts.

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Features
Everything you need to bring your skull prop to life
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Dual LCD Eyes

Two round 240x240 GC9A01 LCDs render animated eyes at 60 FPS. Choose from 9 built-in styles or create your own custom eyes.

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Hi-Fi Audio

44.1kHz 16-bit stereo playback via PCM5102A DAC. Load WAV files on a standard microSD card. Supports up to 32 triggered tracks plus ambient background loops.

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Jaw Sync

Real-time FFT analysis drives a servo to sync jaw movement with vocal energy. Adjustable open/close limits with first-boot safety lockout.

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Trigger Input

Opto-isolated trigger input works with PIR sensors, push buttons, relay contacts, and prop controllers. Configurable cooldown from 5 to 120 seconds.

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OLED Menu

On-board OLED display and rotary encoder for full configuration without a computer. Adjust volume, eye style, jaw limits, trigger mode, and more.

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SD Card Audio

FAT32 microSD up to 32GB. Organize your audio in simple folders. Sequential or random playback modes, plus ambient background loops.

Specs
RP2040
Dual-Core Processor
240x240
LCD Eyes (x2)
44.1kHz
Stereo Audio
60 FPS
Eye Animation
5-24V
Input Voltage
USB-C
Power & Updates
32GB
SD Card Support
9+
Built-in Eye Styles
Custom Eyes
Design your own eye textures with our free online tool
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Human
😈
Demon
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Reptile
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Robot
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Owl
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Dragon

Create custom eye textures online, download as .eye files, and drop them on your SD card.

Eye Creator Tool
Easy Setup
Plug in your SD card, power up, and go

SD Card Layout

SD Card (FAT32, up to 32GB)
├─ /audio/
│  ├─ track1.wav
│  ├─ track2.wav
│  └─ ... (up to 32 files)
├─ /ambient/ (optional background loops)
└─ /eyes/ (optional custom .eye files)

Audio format: 44.1kHz, 16-bit, stereo WAV