microSD Sniffer Hookup Guide

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Contributors: Toni_K
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Introduction

The microSD Sniffer is a useful tool for hacking or debugging circuits with microSD functionality.

microSD Sniffer

The Sniffer allows you to see the SPI signals passing back and forth from your microSD card to your microcontroller or project.

Covered in This Tutorial

This tutorial will show you how to setup the sniffer as well as how to use it to “sniff” the data transmitted to and received from a microSD card.

Materials Required

To follow along with this tutorial, we recommend you have access to the following materials.

You will also need a project that has a microSD slot involved. We will be using the microSD Shield and Redboard.

SparkFun microSD Shield

DEV-12761
$14.95
8

DEV-12757
127 Retired

You will also need some kind of logic analyzer. You can use anything like the following:

Logic Pro 8 - USB Logic Analyzer

TOL-13196
$699.95
2

TOL-13195
4 Retired

TOL-11219
1 Retired

TOL-09263
Retired

Suggested Reading

If you aren’t familiar with the following concepts, we recommend reviewing them before beginning to work with the microSD Sniffer.