Circuit Diagram for Solenoid Door Lock using Arduino is given below. Connections between Arduino and RFID are given in the table below. The positive pin of the buzzer is connected to digital pin 4 of ...

Ultrasonic Sensor Arduino Circuit Diagram and Explanation. The circuit diagram for arduino and ultrasonic sensor is shown above to measure the distance. In circuit connections Ultrasonic sensor module ...

Code, wiring diagrams, and documentation describing how to interface an Arduino with RDM6300 module to read 125kHz EM4100 tags. When a card with the correct tag ID is read, as defined in the code, a ...