Interface 4x4 Keypad With raspberry Pi 4. keypad with raspberry pi 4 keypad rpi4, keypad with rpi4, rpi4 keypad Hello friends, I hope you all are doing well. Welcome to the next tutorial of our Raspberry Pi 4 programming course. In the previous lecture, we interfaced LCD 16x2 with Raspberry Pi 4. Today, we will interface a keypad 4x4 to Raspberry Pi 4. In embedded projects, a keypad is used to get user input ...