Membrane 3x4 Matrix Keypad + extras [3x4]

Enter your secret code on this amazing numeric matrix keypad. It features 12 buttons arranged in a classic 3x4 telephone grid. Crafted from a thin and flexible membrane material with an adhesive backing (just peel off the paper), you can easily attach it to almost anything. The keys are matrix - connected, requiring only 7 microcontroller pins (3 columns and 4 rows) to scan the pad. Check the tutorials tab for an Arduino library and example code. We also include a 7 - pin extra - long header strip for easy breadboarding.

Using this keypad is a breeze. First, peel off the paper on the adhesive backing and stick it to the surface you want. To connect it to your project, use the 7 - pin extra - long header strip to plug it into a breadboard. When using it, just press the buttons to enter your secret key. As for maintenance, keep it away from water and excessive heat. If it gets dirty, you can gently wipe it with a dry cloth. Don't use sharp objects on the keys as it might damage the membrane. That's all you need to know to get the most out of this keypad.