# Split-Flap Departure Board Display

A miniature train station departure board simulator. The 250x150x80mm display uses servo-driven split-flap modules showing scrolling destinations and times. Mechanical clicking sound. WiFi control for custom messages. Realistic airport/train station ambiance for desk or wall. This departure board project is perfect for makers, DIY enthusiasts, and electronics hobbyists. Search volume: 880/month.

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

—Validated fit

—Electrical OK

—Assembly ready

## Parts List

|  | Part | Why | MPN | Qty |
| --- | --- | --- | --- | --- |
|  | ESP32-S3 WiFi MCU<br>Espressif Systems | Main microcontroller providing WiFi control capability for remote message updates and servo control for split-flap modules | `ESP32-S3` | 1 |
|  | Micro Servo SG-90<br>Gearbox Labs | Servo motors to drive individual split-flap display modules for mechanical flipping action | `PART MICRO SERVO SG-90 ANALOG` | 8 |
|  | Dual Motor Driver<br>Texas Instruments | Motor drivers to control multiple servo motors for split-flap display modules | `DRV8833PWPR` | 2 |
|  | 5V Switching Regulator<br>Texas Instruments | Step-down regulator to provide 5V power for servo motors from wall adapter | `LM2596S-5.0/NOPB` | 1 |
|  | 3.3V Linear Regulator<br>Texas Instruments | Linear regulator to provide clean 3.3V power for ESP32 and control circuits | `LM1117MPX-3.3/NOPB` | 1 |
|  | Power Switch<br>C&K | Main power switch for desktop device control | `OS102011MS2QN1` | 1 |
|  | Piezo Buzzer<br>Mallory Sonalert Products Inc. | Generates mechanical clicking sound for realistic train station ambiance | `PB-1226PEAQ` | 1 |

7 unique parts, 15 total components