This instructable assumes that you have basic knowledge of electronics and a cursory understanding of C++. NOTE: This device is useless unless you already know the contents of a particular magnetic stripe card that you want to emulate. Thus, you can't use this device to do Something You're Not Supposed To Do unless you've already done something naughty to obtain the data from a magnetic stripe card you're not supposed to have.
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Don't do naughty things. Your mother wouldn't like it.
Step 1: How It Works. Before going any further, read the document I've attached to this step, 'A Day in the Life of a Flux Reversal' by Count Zero. This document is pretty much the bible on how magnetic stripes work, and you need to understand how data is encoded on to them and the basic formatting of the tracks on a given magnetic stripe card. I'm going to go get a cup of coffee; have it read by the time I get back. As you will have learned from your reading, data is encoded on to magnetic stripes by means of magnetic flux reversal in the segments on the stripe. When the card is swiped past the card reader, the changing magnetic field of the passing flux reversals induce a current in the reader element, which is then decoded into binary bits, and the original data stored on the magnetic stripe is reconstructed. So, in order to emulate a particular magnetic stripe, all we need to do is find a way to recreate the pattern of the way its magnetic field changes as it's being swiped past the reader.
How are we going to do this? With an electromagnet! Neverwinter Nights 2 Toolset Download Steam.
As you may already know, an electromagnet is basically just a solenoid (coil of wire). When an electric current is passed through the coil, a magnetic field is created. By turning the electromagnet on and off rapidly, we can replicate the changing magnetic field of a magnetic stripe swipe. The final piece of this puzzle is how to control the electromagnet. Well, we're trying to recreate a particular waveform of current through the solenoid in order to create a particular waveform of magnetism. What's a common way of storing waveforms and converting them to electric current?
So, all we have to do is encode the highs and lows representing the desired flux reversal pattern into a. Escucha Israel Carlos Junco Garza Pdf Download. wav file and play it back on an iPod or similar music player through the solenoid. Music players designed to play sound through headphones do not produce enough current to drive the electromagnet in this project, so we will also have to construct a basic amplifier that the signal must be passed through before going to the electromagnet.
Although a solenoid by itself will produce a magnetic field when electric current is passed through it, a much stronger magnetic field will be produced if the solenoid is wrapped around a core of ferrous material, such iron or steel. For this project, I cut some small shapes out of 7 mil steel shim material to use as the core. I marked off a tab that is the part of the metal that will actually be inside of the reader slot, and cut some grooves to keep the solenoid in place. When electric current is passes through the coil, the entire steel shim is magnetized. For the coil itself, just use standard enamel-coated magnet wire. Wrap it until you run out of wire or space.
Mu Speed Hack Downloads here. The more turns you have, the stronger your electromagnet will be. Before you start wrapping the wire, cover the part of the steel around which the wire will be wrapped with tape or something to keep the coil from shorting out if a sharp metal edge bites through the magnet wire's thin enamel coating. After you have wrapped the solenoid, cover it in electrical tape to hold it in place, and solder some wires on to the end of the magnet wire leads. Make sure not to get tape on the metal face that will be pushed up against the stripe reader's sensing element.