Arduino magnetic stripe decoder using microcontroller

This instructable shows how to use some freely available code, an arduino, and a standard magnetic stripe reader to scan and display the data stored on magnetic stripe cards such as credit cards, student IDs, etc.
I was inspired to post this after reading the intro to magnetic stripe reading and Stripe Snoop that is found in MAKE magazine Volume 1. That tutorial details how to interface a stripe reader to a game port interface, but I have a mac laptop, so I don’t have a game port interface!
 

magnetic stripe decoder

Also, I think that the arduino suite of hardware/software is much more integrated and easy to understand for beginners than the “traditional” approach presented on the Stripe Snoop website and MAKE magazine.
However, this application simply shows the data that’s on a magnetic stripe; it does not have any of the more advanced features that Stripe Snoop does.
The last step of this instructable has some links to more in-depth information about this topic for those who are interested.

Step 1: Hardware

Obviously, you first must obtain a magnetic stripe reader. I’m using an Omron V3A-4K that I ordered from digikey. It cost me $20.00 or so. If you can’t find one of these, any standard TTL reader will do.Don’t worry about buying one of the fancy harnesses that they sell. There are breakout pads on the circuit board inside of the reader. Once you have received your reader, pop off the side cover, and solder wires to the pads as shown in the picture. Of course, if you have a different reader, the wiring will probably be different. In this case, consult your reader’s datasheet to locate the necessary pads.Next, connect the wires to the Arduino’s digital pins as follows:DATA – 2
CLK – 3
LOAD – 5Finally, connect the +5v and GND to their respective terminals on the Arduino board.

Step 2: Software

Software
This step is easy. Simply load the attached sketch on to your Arduino.
Note: I didn’t write this code, I found it here. I’ve just attached it here for convenience.
For more detail: Arduino magnetic stripe decoder using microcontroller


About The Author

Ibrar Ayyub

Ibrar Ayyub is an experienced technical writer with a Master's degree in computer science from BZU Multan University. He has written for various industries, mainly home automation, and engineering. He has a clear and simple writing style and is skilled in using infographics and diagrams. He is a great researcher and is able to present information in a well-organized and logical manner.

Follow Us:
LinkedinTwitter
Scroll to Top