The Raspberry Pi Zero W IoT Password-Based Circuit Breaker is a smart electrical protection system designed to control an AC bulb load through a password-based wireless switching mechanism. The system uses a Raspberry Pi Zero W as the main controller, providing Wi-Fi connectivity for IoT-based operation. A remote interface is used to send control commands, while a DIAC-TRIAC circuit performs electronic switching of the AC bulb. The user must enter the correct password before the circuit breaker can be operated, providing an additional level of access protection. The Raspberry Pi processes the authentication and switching commands and controls the TRIAC circuit accordingly to turn the AC load ON or OFF. The system demonstrates a low-cost approach for secure remote electrical load control, reducing the need for manual switching and providing improved convenience and access control for electrical appliances.

            The major features of this project are:  

• Password-Based Access: Allows circuit control only after entering the correct password.
• IoT-Based Control: Uses Raspberry Pi Zero W with built-in Wi-Fi for wireless operation.
• Remote ON/OFF Control: The AC bulb can be switched remotely using a control interface.
• DIAC-TRIAC Switching: Provides electronic switching of the AC load.
• Electrical Isolation: The TRIAC switching stage separates the low-voltage control section from the AC load section.
• Unauthorized Access Protection: Prevents operation without valid authentication.
• Real-Time Load Control: Enables quick ON/OFF control of the connected AC bulb.
• Compact Design: Raspberry Pi Zero W provides a small and economical controller platform.
• Low-Power Control Circuit: The Raspberry Pi operates the control and communication section with low power consumption.
• Improved Safety and Convenience: Reduces the need for direct manual operation of the AC appliance.

              The major building blocks of this project are:  

• Power Supply.
• Raspberry pi zero W processor.
• Diac & Traic.
• LED indicators.
• SD Card.
• AC load.

          Software’s used:  

• Raspbian OS.
• Python Programming Language
• it web page.
• Express SCH for Circuit design.

                         

 

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