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Automatic Fan (Thermal Comfort System)

School G4 — Inventor Missions

Use a temperature sensor and either a small DC motor fan or a servo waving a paper fan. Program the device to monitor temperature. If the temperature goes above your chosen comfort threshold (say 28°...

Automatic Fan (Thermal Comfort System)

Mission Description

Context: Wasting electricity on fans or AC when it’s cool is not efficient. Create an Automatic Fan system that turns on a fan only when the room is hot, similar to how thermostats work.

Task: Use a temperature sensor and either a small DC motor fan or a servo waving a paper fan. Program the device to monitor temperature. If the temperature goes above your chosen comfort threshold (say 28°C), the fan motor should turn on (or servo starts fanning). If the temperature falls back below that, the fan turns off. Add an LED indicator (blue LED on when fan is running, off when not) for clarity.

Expected Output: An energy-saving smart fan. During testing, when you warm the temperature sensor (perhaps by holding it or using a hairdryer from a distance), the system recognizes the heat and switches the fan on. When the sensor cools (you might blow air over it or remove the heat source), after a slight delay the fan stops. This shows how automation can maintain comfort while conserving energy – a small- scale example of smart home climate control.

Student Goal

Use a temperature sensor and either a small DC motor fan or a servo waving a paper fan. Program the device to monitor temperature. If the temperature goes above your chosen comfort threshold (say 28°C), the fan motor should turn on (or servo starts fanning). If the temperature falls back below that, the fan turns off. Add an LED indicator (blue LED on when fan is running, off when not) for clarity.

Mission Information

Status
Open
Deadline
December 31, 2025
Category
School
Grade
G4 — Inventor Missions
Rewards
Recognition, Internships, Prizes

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