1. Microcontroller (MCU): e.g., STM32, Arduino, ESP32

2. Display: OLED/LCD for preview or output

3. Writing Mechanism: Servo motor + pen lift/drop mechanism

4. Stepper Motors: For X-Y axis movement control

5. Motor Drivers: A4988, L298N, or DRV8825

6. Power Supply: Battery or DC adapter

7. Frame/Structure: 3D printed or laser-cut parts

8. Control Interface: Buttons, touchscreen, or Bluetooth/WiFi

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