Hello friends, I hope you all are doing great. Today, I am going to share the new Membrane Keypad Library for Proteus V1.0 . The thin, self-adhesive 4x4 and 4x3 membrane keypads are the cheapest way to give an Arduino project a real keypad: a door lock with a code, a menu, a calculator, a safe, a parcel box or a machine that asks for a number. Each comes with a flat ribbon and a female 2.54 mm connector - 8 pins for the 4x4, 7 for the 4x3 - and plugs straight into the Arduino's headers. Behind the parts sits our own model of a key matrix. You click the keys on the keypad while the simulation runs, and the model behaves like the real contacts under the membrane: a key joins its row line to its column line, and the sketch has to scan the matrix to find it. Because there are no diodes, three ...