Developed a smart embedded coin-based charging control system designed to regulate access to electrical charging services through coin authentication and timed power delivery. The system was engineered for real-world utility environments where users can insert coins to activate charging sessions for a predefined duration, with automated power switching and real-time user feedback.
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Coin
Payment-Based Activation
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Timed
Controlled Power Sessions
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Arduino Mega
Embedded Control Unit
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Relay System
Automated Power Switching
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System Overview
The system validates inserted coins through an embedded coin detection module, triggering a controlled response that activates a timed charging session. This ensures only verified inputs initiate power access, enabling a secure and automated usage flow.
A relay-based switching mechanism manages electrical output to charging sockets, enabling precise time-based power delivery. The system ensures automatic shutdown after the allocated duration to enforce controlled energy usage.
An LCD-based interface provides real-time feedback including session status, remaining time, and system state indicators, ensuring users have clear visibility of charging operations at all times.
Engineering Highlights
Implemented embedded control logic using Arduino Mega for managing coin detection events, timing operations, relay switching and system state transitions in real time.
Designed relay-based switching architecture to control electrical sockets safely, enabling automated ON/OFF transitions based on coin validation and session timing logic.
Integrated a 16x2 LCD display module to provide user interaction feedback including credit status, charging duration, and system readiness indicators.
Implemented LED-based status indicators to visually communicate system states such as idle mode, active charging, and session completion.
Outcome
This project demonstrates practical expertise in embedded systems design, automated payment-based control systems, relay-driven power management and real-time user interface engineering. It showcases the ability to build reliable embedded solutions for real-world utility applications involving secure energy access control and timed automation systems.