Automated Temperature Control using Arduino and PWM Logic

Project Title: Autonomous Thermal Management System: Smart Cooling Control via Embedded Systems

Project Overview:

This project presents a robust mechatronic solution designed for automated climate regulation and hardware protection. By integrating mechanical thermal principles with embedded C++ programming, the system monitors ambient temperature in real-time and adaptively modulates cooling fan speeds to optimize energy efficiency and ensure component longevity.

Key Technical Features:

Intelligent 3-Tier Control Logic: The system operates on a sophisticated feedback loop that categorizes cooling intensity into three distinct modes:

Idle Mode (<30°C): Fan remains off for zero power consumption.

Active Cooling (30°C - 45°C): Balanced cooling using precise PWM signals.

Critical Mode (>45°C): Full 100% duty cycle for maximum heat dissipation.

High-Resolution Data Acquisition: Utilizes the TMP36 analog sensor for accurate thermal readings, processed through optimized digital filtering in the firmware.

Advanced Actuation & Drive: Features a Pulse Width Modulation (PWM) speed control mechanism driven by an NPN BJT transistor, ensuring smooth transitions and high torque management for DC fan motors.

Real-time Monitoring Interface: Integrated 16x2 LCD display providing instantaneous feedback on temperature metrics and cooling power percentages.

Technical Documentation Includes:

Comprehensive Engineering Report: Detailed hardware specifications and operational algorithms.

Circuit Schematics: High-fidelity wiring diagrams ensuring safe and reliable electrical integration.

Optimized Source Code: Clean, documented, and production-ready C++ code.

Simulation Data: Verified functional results from professional-grade simulation environments (Tinkercad).