The 4x4 Matrix Keypad is a very handy and fun tool that you can use in your arduino projects. It works for both beginners and experts of the world of electronics. The 4X4 Matrix Keypad will make your DIY electronic project even more fun!
4x4 Matrix Keypad 4x4 matrix keypads are a rectangular array of 16 buttons, 4 rows and 4 columns. When you push a button, it transmits a signal to a microcontroller, like an Arduino, signaling it to do something fancy. With all this space to play around, you’ll be able to make all sorts of fun gadgets, like password-protected door locks, musical instruments, or even some really primitive games.
If you google "4x4 matrix keypad", you will notice that under the rubber, there are four rows and four columns of buttons. No unit is shared between any two rows and any two columns. Each button is in the intersection of a row and a column. So you can actually tell which button you press. You may also hold several buttons at the same time, providing more flexibility!
Once You have a 4x4 matrix keypad, the only thing you need to do is connect the row pins and column pins to the right next pins on your microcontroller board. Each button is wired to a predetermined combination of row and column pins. This serves to tell the microcontroller which button you pushed. You can utilize a basic wiring route to maintain your keypad in a functioning condition.
After you have connected your 4x4 matrix keypad to the Arduino, you can now program it to work with the Arduino. If you press one button, you can do something, or something else if you press a different one, and so on. You can write functions that recognize different button presses and with that you can make all sorts of cool projects with your keypad.
4×4 Matrix Keypad truly endless fun! You can make a password protected security system, a piano with multiple keys or a game controller to play your favorite games! The 4 x 4 matrix keypad is an inexpensive way to add just the right input device to your project.
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