Punch cards were a standard form of program and data storage for decades, but you’d never know it by looking around today. Card punches and even readers are becoming rare and expensive. Somet… ...

But for those who fancy experimenting with the format it’s still possible to make a basic card reader using LEDs and light sensors, as [Nino Ivanov] has done using an Arduino Uno as the brains.

Arduino developers, makers and hobbyists that enjoy creating projects for the micro-controller may be interested in a new Arduino hard development card called the Shrinkified that has been ...