# VU Meter Audio Level Display

A vintage-style stereo VU meter with modern LED bars. The 180x100x50mm case has two 20-LED columns showing left/right audio levels. Microphone or line-in. Simulated analog meter movement with peak hold. Wood or brushed aluminum faceplate options. Beautiful audio visualization. This VU meter project is perfect for makers, DIY enthusiasts, and electronics hobbyists. Search volume: 1900/month.

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AI-generated from prompt:"A vintage-style stereo VU meter with modern LED bars. The 180x100x50mm case has two 20-LED columns showing left/right audio levels. Microphone or line-in. Simulated analog meter movement with peak hold. Wood or brushed aluminum faceplate options. Beautiful audio visualization."

All parts, CAD, wiring, and firmware generated by Modo AI Hardware Builder with human direction.

—Validated fit

—Electrical OK

—Assembly ready

## Parts
| Part | Why | MPN | Qty |
| --- | --- | --- | --- |
|  | ESP32-S3 Development Module  
Espressif Systems | Main microcontroller for processing dual audio channels, driving LED columns, and handling audio peak detection algorithms | `ESP32-S3-WROOM-1-N4` | 1 |
|  | Audio ADC for Line/Mic Input  
Texas Instruments | Converts analog audio signals from line input and microphone to digital for level analysis and peak detection | `TLV320DAC3203IRGER` | 1 |
|  | MEMS Microphone  
TDK InvenSense | Captures audio input for microphone channel processing and level visualization | `ICS-43434` | 1 |
|  | OLED Display  
Orient Display | Shows audio levels, channel selection, and settings for stereo audio meter configuration | `AOM12864A0-0.96WW` | 1 |
|  | 3.3V Voltage Regulator  
Texas Instruments | Converts 12V wall power to 3.3V for all digital components including MCU and LED drivers | `LM1117MPX-3.3/NOPB` | 1 |
|  | 5V Voltage Regulator  
Texas Instruments | Provides 5V rail for higher power LED driving and audio input circuitry | `LM2596S-5.0/NOPB` | 1 |
|  | Power Switch  
C&K | Main power control switch for desktop audio level meter unit | `OS102011MS2QN1` | 1 |
|  | Green LEDs for Lower Levels  
Lite-On Inc. | Green LEDs for lower portion of dual 20-LED columns to indicate normal audio levels in stereo meter | `LTST-C171GKT` | 24 |
|  | Yellow LEDs for Mid Levels  
Lite-On Inc. | Yellow LEDs for middle portion of dual 20-LED columns to indicate moderate audio levels in stereo meter | `LTST-C171YKT` | 12 |

9 unique parts, 43 total components.