SPI Interface SD Card Shield Board Memory Module with Level Shifter IC
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৳ 70.00৳ 100.00 (-30%)
The Standard SD Card Module Reader is a compact storage breakout board designed to give microcontrollers instant data logging and file storage capabilities. Communicating over a standard SPI interface, it allows development boards to read and write files directly to a standard SD card. The module features an onboard 3.3V voltage regulator and an advanced level-shifter circuit, making it fully compatible with both 5V (like Arduino Uno) and 3.3V logic systems without risking hardware damage. This makes it an essential tool for storing large audio files, running visual displays, or logging continuous environmental sensor data over long periods.
Product Overview
The Standard SD Card Module Reader is a highly efficient, compact storage breakout board designed to expand the storage capabilities of microcontrollers. By adding this module to a development platform, systems can read and write files directly to a standard SD flash memory card. It acts as an external hard drive for small electronics, providing gigabytes of non-volatile storage space to log complex datasets, store visual assets, or run large code libraries that would easily overwhelm a microcontroller’s limited internal flash memory.
Advanced Circuitry & Multi-Voltage Compatibility
- Integrated Level-Shifter IC: Many microcontrollers operate on a 5V logic system, while flash memory cards operate strictly on a delicate 3.3V power plane. This module features a high-speed level converter chip that safely translates communication signals between 5V and 3.3V, preventing the card from burning out during operation.
- Onboard 3.3V Low-Dropout (LDO) Regulator: Equipped with an ASM1117-3.3 voltage regulator chip, the board accepts a standard 5V power input and regulates it down to a rock-solid 3.3V supply required by the memory card.
- Populated Pull-Up Resistors: The PCB is pre-populated with surface-mount resistor arrays (
R1throughR4) that pull up the signal lines. This stabilizes data lines and suppresses signal noise, leading to reliable high-speed file transfers. - Heavy-Duty Metal Shielding: The spring-assisted, push-push style SD slot is enclosed in a rugged, grounded stainless steel shield. This provides excellent EMI/RFI noise isolation and shields the memory card from mechanical flexing or vibration.
High-Speed SPI Interface Pinout
The board breaks out all necessary communication signals via a standard 16-pin dual-row right-angle header (labeled
J2), allowing clean connections with standard female-to-female jumper wires:GND: Central system ground connection.3.3V/+5V: Flexible power input pins to run the module off your development board’s power rail.CS(Chip Select): Activates the specific SD module on the SPI bus, allowing multiple SPI devices to share the same data lines.MOSI(Master Out Slave In): Carries data sent from the microcontroller into the SD card.SCK(Serial Clock): Synchronizes the timing of high-speed data transfers between both chips.MISO(Master In Slave Out): Carries data read from the memory card back to the host microcontroller.
Ideal Engineering Applications
- Long-Term Data Logging: Storing months of environmental measurements from weather stations, industrial machinery, or agricultural sensor grids.
- Audio & Media Players: Storing massive collections of WAV or MP3 files for custom sound boards, animatronics, or talking smart home appliances.
- Offline Web & Graphic Servers: Storing custom bitmaps, fonts, or HTML pages to drive color TFT touchscreens and remote dashboard interfaces.
- Autonomous Robotics: Saving path-finding maps, configuration text profiles, and obstacle history coordinates for mobile rovers.
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