Ramps 1.4 External Sd Card Module

Ramps 1.4 External Sd Card Module provides a dedicated, high-speed interface for 3D printers to execute G-code files directly from an SD card without requiring a constant connection to a computer. This compact module integrates seamlessly with the RAMPS 1.4 shield, effectively decoupling the printing process from PC-based software interruptions. Consequently, users experience significantly higher reliability during long-duration prints, as the controller reads data locally. Furthermore, the module features built-in level shifting to ensure signal integrity between the SD card and the microcontroller. Therefore, you should install this external module to transform your 3D printer into a truly standalone production unit.

Key Features:

• Standalone Printing: Enables the 3D printer to operate independently of a host PC, preventing print failures caused by computer sleep modes or software crashes.
• Plug-and-Play Compatibility: Designed specifically for the RAMPS 1.4 and 1.6 headers, ensuring a straightforward hardware installation process.
• SPI Interface Protocol: Utilizes the standard Serial Peripheral Interface for fast and reliable data transfer between the storage media and the Arduino Mega.
• On-board Voltage Regulation: Includes necessary components to handle the 3.3 V logic requirements of SD cards while interfacing with 5 V microcontroller systems.
• External Mounting: Allows for the convenient placement of the SD slot on the exterior of a printer enclosure for easy access.

Technical Specifications:

• Input Voltage: 5 V±10% (Supplied via RAMPS board)
• Logic Level: 3.3 V (Integrated level shifting)
• Supported Card Types: Standard SD and SDHC cards (Typically up to 32 GB)
• File System Format: FAT16 or FAT32
• Communication Protocol: SPI (Serial Peripheral Interface)
• Operating Temperature: −10°C to +70°C

Mechanical Specifications:

• PCB Material: High-grade FR-4 glass epoxy
• Connector Type: 10-pin (2×5) IDC header or individual pin headers
• Socket Type: Push-pull SD card slot
• Mounting Holes: Pre-drilled for secure attachment to printer frames or custom enclosures.

Dimensions:

• Length: ≈ 50 mm
• Width: ≈ 30 mm
• Height: ≈ 12 mm
• Weight: ≈ 15 g

Pinout and Wiring:

• VCC: Connects to the 5 V pin on the RAMPS AUX-3 header.
• GND: Connects to the system ground.
• MISO (Master In Slave Out): Connects to Pin D50 on the Arduino Mega.
• MOSI (Master Out Slave In): Connects to Pin D51 on the Arduino Mega.
• SCK (Serial Clock): Connects to Pin D52 on the Arduino Mega.
• CS (Chip Select): Connects to Pin D53 for SD card initialization.
• CD (Card Detect): Optional pin used to sense the presence of the SD card in the slot.

Datasheet Reference:

• Download RAMPS 1.4 Interface and SD Schematic

Commonly Used in:

• RepRap 3D Printers: Standard equipment for Prusa i3, Mendel, and other open-source 3D printer builds.
• Custom CNC Machines: Providing a storage interface for G-code execution in small-scale milling projects.
• DIY Data Loggers: Storing sensor data to a removable card in Arduino-based monitoring stations.

Applications:

• Offline Manufacturing: Running 3D print jobs in environments where a dedicated PC is unavailable or impractical.
• Firmware Updates: Some bootloaders allow flashing Marlin or Repetier firmware directly from the SD card.
• Industrial Prototyping: Ensuring uninterrupted signal flow for critical, high-precision prints.

Equivalent Models:

• RepRapDiscount Full Graphic Smart Controller: Includes the SD slot integrated into an LCD screen assembly.
• Micro SD Card Module (SPI): A smaller version designed for Micro SD cards using the same SPI protocol.
• RAMPS 1.6 SD Interface: A newer iteration providing identical functionality with updated component layouts.

Package Includes:

• 1 x Ramps 1.4 External Sd Card Module