Cooling Box for N5105 Mini PC

Problem Solved:

"Intel N5105-powered Mini PCs often reach critical temperatures under heavy workloads (e.g., gaming emulation, multitasking, or server use), leading to thermal throttling and instability. This cooling box solves the issue with:

• Active cooling via a Noctua NF-S12A PWM fan.
• Smart thermal control that adjusts fan speed based on CPU temperature.
• Compact design that preserves the Mini PC’s minimalist aesthetics."

Key Features:

1. Optimized Airflow Efficiency:
   • Top air intake + front/rear exhaust at the base for ideal circulation.
   • Noctua NF-S12A PWM fan (120mm, 18.6 dB(A) for quiet operation.
2. Advanced Thermal Control Circuit:
   • Power supply: External 12V DC (compatible with 8-18V sources).
   • Temperature sensor: NTC 50K probe (B=3950) with a black head (supports up to 120°C).
   • Automatic adjustment: Fan speed ramps from 20% to 100% based on temperature (default: acceleration starts at 30°C).
   • Safety: Max 3A current draw (suitable for standard fans).
3. Compatibility & Easy Installation:
   • Box dimensions: 141mm x 147mm x 39mm (fits N5105 Mini PCs of similar size).
   • No permanent modifications: Uses screws included with the Noctua fan.
   • Port accessibility: USB/HDMI ports remain unobstructed.
4. 3D Printing Flexibility:
   • Tested filament: Bambu Lab PLA CF (rigid and heat-resistant).
   • Alternatives: Any filament (PLA, PETG, ABS) based on user preference.

Materials List: