BTT CB1 Pi4B Adapter Case with 2520 Fan Mount
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Compact case for reusing a spare BTT CB1 and Pi4B Adapter, with a top-mounted 2520 cooling fan.
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Model information
- Source
- Printables
- Category
- Other Printer Parts & Upgrades
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
I designed this enclosure to reuse a spare BTT CB1 module and Pi4B Adapter after upgrading my BTT Manta M8P setup from the CB1 to a Raspberry Pi CM4.
The enclosure makes it easy to repurpose existing hardware for useful home-network applications, such as Wi-Fi management, network monitoring, ad blocking with Pi-hole or AdGuard Home, and other lightweight self-hosted services.
The uploaded photos show the actual CB1/Pi4B Adapter board used with this design and an example of the 5V fan connection.
FEATURES
• Top mount for a 25 × 25 × 20 mm (2520) 5V cooling fan
• Improved airflow and cooling around the CB1 module
• Compact enclosure for repurposing hardware that would otherwise remain unused
• Designed around the BTT CB1 and Pi4B Adapter combination
REQUIRED HARDWARE
• BTT CB1 module
• BTT Pi4B Adapter board
• 2520 5V fan (25 × 25 × 20 mm)
• M2.5 × 12 mm screws
FAN WIRING
• Connect the fan positive wire to physical pin 2 (+5V)
• Connect the fan ground wire to physical pin 6 (GND)
• Power off the board before wiring and verify the fan polarity before switching it on
PRINTING SUGGESTIONS
• Layer height: 0.20 mm
• Walls: 3 or more
• Infill: 15% or more
• PETG is recommended for better heat resistance; PLA may also work in a cool environment
Please verify the fit with your specific board revision before final assembly.