Everyone is aware about the famous band Enigma from Germany which was formed in 1990. This instruct able aims to build a fully functional electronica replica of the famous world German Enigma machine. The good thing, it’s able to encrypt as well as decrypt Enigma encoded messages. To implement, the LED’s a simpler but much widely used concept of multiplexing was implanted which works on the principle of persistence of vision. With the help of multiplexing,115 Led’s used only 38 pins which is still large but small when compared with the number of LED’s used.
With the help of properly placed MOSFET;s and resistors, 36 push buttons used only 4 pins, and that is incredibly small. The board used to place all the boards and components was a Radio Shack 6″ x 8″ Micro Perboard is the perfect size to host all components as it provides just the right amount of space to fit everything on & will fit perfectly inside the Enigma box. After obtaining the exact dimensions of the original M4 wooden box, the next step was to purchase a sheet of plywood & cut it in pieces so that the case could be assembled.