SPI Bus SD Card Reader Kit: Build a Text File Browser with Arduino Uno & OLED

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Imagine holding a tiny device that can store your text notes on a microSD card and instantly display their contents on a crisp OLED screen. With this kit, you’ll create that exact gadget — a self-contained text file reader that demonstrates how embedded systems handle persistent storage and visual output over a single, synchronous serial bus.

What You'll Build

You’ll wire the Arduino Uno, microSD module, and 0.96‑inch OLED together on a breadboard, then upload code that writes a sample text file to the card, searches for it, and shows the file name and full text on the display. The finished circuit is a working proof-of-concept for loggers, configuration readers, or even a simple digital notepad.

What You'll Learn

• How the SPI protocol works: MOSI, MISO, SCK, and Slave Select lines
• Using Arduino’s SD.h library to create, read, and list files on a microSD card
• Driving a 0.96‑inch OLED display with the Adafruit SSD1306 library
• Wiring multiple SPI devices on a common bus while managing chip selects

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for CBSE students (Class 6–10) who are starting with practical electronics, ATL Tinkering Lab sessions, and young hobbyists aged 5–15. The SPI communication concept also makes it a valuable hands-on refresher for B.Tech ECE/EEE undergraduates, Smart India Hackathon participants looking for a quick prototyping foundation, and IIT/NIT/VIT/BITS students who need a reliable SD‑card‑OLED demo.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.