In this project we have built an Arduino Keypad Door Lock which can be mounted to any of your existing doors to secure them with a digital password.

Scientific Calculator using Arduino Uno In this, we are trying to make a calculator using Arduino as microcontroller, 4x4 Keypad as input and LCD as output. This is implementated using TinkerCad ...

In addition, the selection of components is somewhat limited (including only supporting the Arduino UNO, as far as we could tell). So for educational purposes, it is great.

Password Based Door Lock System 🔐 This is a password-based door lock system using an Arduino Uno, 4x4 Keypad, and a 16x2 LCD display.