IoT-Based Bank Security Lock System (Blynk Integration)

 Circuit Diagram:

🏦 Bank Security Lock System

Multi-Layered Security with Blynk IoT Remote Control

This IoT-based security system is engineered specifically for bank vault protection. It utilizes an ESP32 to manage a sophisticated multi-layered security protocol: motion detection via PIR, physical authentication via RFID, and global remote monitoring/control through the Blynk IoT platform.

📋 Components List

• MCU: ESP32-S3
• RFID: RC522 Reader
• Motion: PIR Sensor
• Display: I2C OLED (SSD1306)
• Actuator: 5V Relay Module
• Alerts: Buzzer & Dual LEDs
• Cloud: Blynk IoT Platform

📍 Hardware Pinout Mapping

Component	Pin Name	ESP32 GPIO	Description
RFID-RC522	SDA (SS)	GPIO 5	SPI Chip Select
	SCK	GPIO 18	SPI Clock
	MOSI	GPIO 23	Master Out
	MISO	GPIO 19	Master In
	RST	GPIO 4	Reset
OLED Display	SDA	GPIO 21	I2C Data
	SCL	GPIO 22	I2C Clock
PIR Sensor	OUT	GPIO 32	Motion Input
Relay	IN	GPIO 33	Lock Actuator
Indicators	Buzzer/LEDs	14, 25, 26	Audio/Visual Alerts

⚙️ Software Configuration

Blynk Datastreams:

• V1 (Virtual Pin 1): Button Switch for Manual Relay/Lock Control.
• V2 (Virtual Pin 2): Button Switch for Manual Alarm/Buzzer Trigger.

Required Libraries: Blynk, MFRC522, Adafruit SSD1306, Adafruit GFX, Adafruit BusIO.

🛡️ Operational Logic

• 🔄 Authorized Entry: Valid RFID scans override the system, opening the lock for 3 seconds.
• 🚨 Security Breach: PIR motion detection immediately triggers visual/audio alert states.
• 🌐 Remote Override: Administrators can manually operate the lock or sound alarms from anywhere via the Blynk Dashboard.

🌐

IoT Bank Lock Simulation

Cloud Enabled

Test the ESP32-S3 integration and RFID authentication logic in this virtual environment. This simulation includes the OLED feedback system and real-time triggers for the Blynk IoT dashboard.

🚀 Launch IoT Simulator

📱

Live IoT Cloud Dashboard

Powered by Blynk.Cloud

Access the remote management interface for the Bank Security System. From this dashboard, you can monitor live motion alerts, view entry logs, and manually override the vault lock from anywhere in the world.

🌐 Open Remote Dashboard