Assessfy Pvt. Ltd Beginner 5 milestones 100 marks

Smart Cooling Fan with Temperature Sensing & IoT Dashboard

Target year: SE Sem 3-4 (Mini-Project-I) AICTE: 2 credits · ~50 hrs Bloom: Apply MU CBCS: MEC403 Mini-Project 1A/1B

Real-world project · AICTE-aligned · AI-graded · Audit-ready certificate

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About this project

Build a temperature-aware DC fan using an Arduino + DHT22 sensor where fan RPM scales with ambient temperature. Push real-time temperature + fan-speed data to a Firebase / ThingSpeak dashboard. Demonstrates basic mechatronics, PWM control, and IoT data flow.

Course Learning Outcomes (CLOs):
CLO1: Apply Arduino programming concepts to control mechanical actuators.
CLO2: Design a closed-loop sensor-to-actuator system.
CLO3: Implement IoT data publish using a free cloud service.
CLO4: Document a working prototype with circuit diagram + flow diagram.

Industry/societal relevance: Foundation hardware-software project for any mechanical/automotive role moving into mechatronics + Industry 4.0.

Milestones

1. Component Procurement & Circuit Design

15 marks 5d

List BOM, source from Robu/Element14, draw circuit diagram on Fritzing. Submit BOM + circuit.

2. Sensor Interface + Reading

20 marks 7d

Wire DHT22 to Arduino, write code to read temperature, log to Serial Monitor. Calibrate against a reference thermometer.

3. PWM Motor Control

25 marks 10d

Drive 12V DC fan via L298N. Map temperature to PWM duty cycle: <25°C off, 25-35°C linear ramp, >35°C max.

4. Firebase / ThingSpeak Integration

20 marks 12d

Push temperature + RPM every 30s to a cloud dashboard. Plot last-hour trend chart.

5. Demo + 4-page Report

20 marks 11d

Live demo: heat the sensor, watch fan ramp + cloud chart update. Submit 4-page IEEE-format report + 3-min video.

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Skills you'll learn

C/C++ for ArduinoPWM motor controlBasic MechatronicsSensor Interfacing (DHT22/DS18B20)IoT cloud integration (ThingSpeak/Firebase)Soldering basics

Tools used

Arduino UNODHT22L298N motor driver12V DC fanArduino IDEThingSpeak / FirebaseMultimeter

Prerequisites

Engineering Mechanics; Basic Electronics; comfort with breadboards; intro programming

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Smart Cooling Fan with Temperature Sensing & IoT Dashboard

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