The complete circuit diagram that shows how to interface and control a solenoid lock with an Arduino through a MOSFET is shown below. As shown in the circuit diagram, the connections are rather, ...

Arduino Uno: The main microcontroller that processes data and controls the system.; Fingerprint Sensor (R 307 ): Captures and processes fingerprint data. Electronic Lock or Servo Motor: Acts as the ...

Circuit Diagram for Arduino Keypad Door Lock. The Complete circuit diagram for our Arduino based Digital Keypad Door Lock project is shown below. First of all, we start from the brain of this project ...

An Arduino microcontroller (MCU) requires only 5V but the solenoid electric lock requires 12V. As Arduino Uno has an inbuilt 5V voltage regulator, ... Fig. 1: Circuit diagram of the fingerprint door ...

You no longer need to carry a bunch of keys wherever you go, as you just have to use your fingerprint to unlock/lock the door. But as these smart locks are made using biometric sensors, they come with ...

The Password-Based Door Lock System is a security-focused project that uses an Arduino microcontroller, a keypad, an LCD, and a servo motor to create a cost-effective and efficient door lock mechanism ...

In the next section, we will see the circuit diagram for the Arduino-based RFID Door Lock System. RFID Door Lock System using Arduino Circuit Diagram. The below RFID Door Lock System circuit diagram ...

Learn to build an RFID based attendance system using Arduino with step-by-step instructions, circuit diagrams, and complete code. This $35 DIY project replaces expensive commercial systems with ...