How to install the Arduino Pro Micro: If your board has a flange/lip around the port that will need to be clipped in order for it to fit into the hole. position the board such that the port is ...

Arduino Uno/Pro/Mini or Custom board using Atmega 328p Microcontroller 16 x 2 LCD (Liquid Crystal Display) 4 x 3 or 4 x 4 matrix keypad for Arduino Servo motor 3D printed door locker/customised door ...

The Arduino Wire library is a core aspect of Arduino's integrated development environment, or IDE, and is a must-have if you're using sensors or extra microcontrollers in your project.

[Ronnie] built a laser trip wire complete with an LCD screen and keypad for arming and disarming the system. The brains of the project is an Arduino.