An Arduino takes over from here, actuating the coil to simulate the different data sections of a magnetic stripe. From his schematic we see that the electromagnet is directly connected to two pins ...

However, the Arduino arguably has the advantage of being simpler to use to make electronic prototypes, and also to swap out for a new microcontroller in the final product.

This hodge-podge of components is capable of spoofing the magnetic stripe on a credit card. [Sk3tch] built an electromagnet using a ferrous metal shim wrapped in enameled magnet wire. While he was … ...

The Electron's computer-on-a-board includes Arduino-like interfaces for connecting sensors and other electronic hardware, a u-blox cellular module, onboard lithium battery and cellular antenna ...