4×4 Keypad with Arduino
Today we are going to connect the 4×4 keypad to an Arduino UNO. You can connect this to any Arduino board with 8 free digital pins. This keypad has a total of 16keys, including ABCD, Pound, and an asterisk.
For this module you will need:
On your PC, Download and install the Arduino IDE from here.
- Go to Sketch —> Include Library —> Manage Libraries
- Search for Keypad library by Mark Stanley and Alexander Brevig.
- Install the library.
Connect your Arduino with a USB cable to your PC and upload the code to your Arduino UNO. Open up the serial monitor from tools —> serial monitor and now as soon as a key is pressed it would show up on the serial monitor. Voila! The project is now complete.
Get the code from here.