Product Overview
Upgrade your Arduino or ESP32 projects with our Micro SD Card Reader Module. Designed for 3.3V SPI operation, this compact TF storage interface delivers fast, reliable data transfer while keeping your board layout clean. The headers are intentionally left unsoldered, giving you the flexibility to wire it directly into your custom PCB or breadboard without soldering.
Key Highlights
- 3.3 V SPI compatible – perfect for Arduino and ESP32 boards
- Supports high-speed SD/TF cards up to 32 GB (SDHC) and 128 GB (SDXC)
- Un-soldered headers for easy prototyping and rapid prototyping
- Low power consumption – ideal for battery‑powered IoT devices
- Durable metal contacts and robust PCB layout for long‑term reliability
- Compact 20 mm × 20 mm footprint, ideal for tight spaces
- Compatible with Arduino IDE, PlatformIO, and ESP-IDF libraries
Technical Specifications
- Operating Voltage: 3.3 V
- Communication Protocol: SPI (4‑wire)
- Pinout: GND, VCC, CS, MOSI, MISO, SCK
- Maximum Clock Speed: 25 MHz (SPI)
- Package Size: 20 mm × 20 mm × 5 mm
- Operating Temperature: –40 °C to +85 °C
- Dimensions: 20 mm × 20 mm (excluding headers)
Compatibility & Usage
Whether you’re building a data logger, a home automation hub, or a portable media player, this micro SD reader works seamlessly with any Arduino or ESP32 board that supports SPI. Simply connect the VCC, GND, CS, MOSI, MISO, and SCK pins to your microcontroller, insert a micro SD card, and start reading or writing files with the standard Arduino SD library or the ESP32’s SDMMC interface.
What’s in the Box
- 1 × Micro SD Card Reader Module (3.3 V SPI)
- 1 × 4‑pin header strip (optional – for soldering)
- 1 × Quick‑Start Guide (pinout diagram, wiring examples)
Why Choose This Module?
Our Micro SD Card Reader Module offers the best combination of performance, flexibility, and ease of use. With unsoldered headers, you can quickly prototype and iterate without the risk of damaging your board. The 3.3 V SPI interface ensures compatibility with the latest ESP32 chips, while the low power consumption keeps your projects efficient. Make data storage simple, reliable, and scalable—add this module to your toolbox today.
Price: Original price was: $ 6.34.$ 3.17Current price is: $ 3.17.

