Upgrade your hobby projects and professional prototypes with the Micro SD Card Reader Module for Arduino and ESP32. Designed for seamless 3.3 V SPI communication, this compact TF storage solution lets you add reliable, high‑capacity memory to any microcontroller board without the hassle of pre‑soldered headers. Perfect for DIY enthusiasts, makers, and engineers seeking flexibility and performance in one affordable package.
Key Highlights
- ✅ 3.3 V SPI Interface – Optimized for Arduino, ESP32, and other 3.3 V microcontrollers.
- ✅ Headers NOT Soldered – Fully customizable wiring; perfect for breadboard or custom PCB layouts.
- ✅ Supports up to 32 GB micro SD cards (SDHC) for extensive data logging and storage.
- ✅ Compact 20 mm × 20 mm footprint – Saves board space in tight enclosures.
- ✅ Low power consumption – Ideal for battery‑operated and remote IoT devices.
- ✅ Bulk purchase options (1‑10 pcs) – Cost‑effective for labs, classrooms, and production runs.
Why Choose This Module?
Whether you’re building a data logger, a portable media player, or an IoT gateway, this reader offers reliable read/write speeds and rock‑solid stability. The unsoldered headers give you the freedom to experiment with different pin configurations, making it a favorite among educators and prototypers who need a versatile, plug‑and‑play solution.
Technical Specifications
- Operating Voltage: 3.3 V (compatible with 5 V tolerant pins)
- Interface: SPI (MISO, MOSI, SCK, CS)
- Supported Card Types: micro SD, SDHC (up to 32 GB)
- Pin Pitch: 2.54 mm (0.1″) standard
- Dimensions: 20 mm × 20 mm × 5 mm
- Current Consumption: < 30 mA (idle), ≤ 100 mA (active write)
Easy Integration
Connect the module to your Arduino or ESP32 using the standard SPI pins. Because the headers are not pre‑soldered, you can:
- Use a breadboard for rapid prototyping.
- Solder directly to a custom PCB for a permanent build.
- Swap pins to match non‑standard board layouts.
Ideal Applications
- Data logging for sensors and environmental monitoring.
- Audio/video playback in portable devices.
- Firmware updates and bootloader storage.
- Educational labs teaching SPI communication.
- IoT gateways requiring local cache.
Package Includes
- 1 × Micro SD Card Reader Module (headers not soldered)
- Quick‑start guide with wiring diagram and sample Arduino/ESP32 code.
Boost your project’s storage capabilities today with a reliable, flexible, and cost‑effective micro SD solution. Order now and start building smarter!
Price: Original price was: $ 3.79.$ 1.78Current price is: $ 1.78.

