Arduino-Beginner-Codes Arduino beginner codes code for sensor and their circuit diagram & Connections I will keep adding more codes and circuit diagrams whenever I get time Codes - Buzzer IR Sensor (Photo Diode) Keypad 3x4 4x4 Knock/Vibration Sensor LCD Display 16x2 LRD (Light Dependent Resistor) LED (Light Emitting Diode) Magnetometer Motors Servo Motor Stepper Motor PIR Sensor (Passive Infrared Sensor) etc.