Project 23 - IR Trigger Motor "K-12 JUNO STEM KIT"

What You Can Build Using K-12 JUNO STEM KIT

In the "IR Trigger Motor" project from the K-12 JUNO STEM Kit, children assemble a simple circuit where an IR (infrared) sensor is used to turn on a fan motor. When an object—like a hand—passes in front of the IR sensor, the circuit switches on the DC fan motor. The motor stays off when nothing is detected. This project demonstrates how motion or presence can trigger devices automatically, just like contactless technology in modern appliances and cooling systems.

What You Can Learn

• Infrared Sensing: Kids learn how an IR sensor detects movement or objects by sending and receiving invisible light waves.

• Electronic Switching: Learners discover how a change in sensor output can activate a transistor or relay, powering the fan motor.

• Basic Circuitry: Students wire the IR sensor, motor, and power supply, understanding how sensors work as switches for electromechanical devices.

• Practical Automation: The project models real-world systems—such as automatic fan controls used for energy saving or comfort—in homes and offices.

Real Life Problem Solving

• Troubleshooting: If the motor doesn’t turn on, kids practice checking IR sensor alignment, motor connections, and circuit continuity in a systematic way.

• Device Understanding: Learners see how contactless activation technology is applied in cooling systems, air purifiers, and other household appliances.

• Design Thinking: Students experiment with sensor placement and motor types to maximize responsiveness and efficiency.

Additional Benefits

• Creativity: Children can incorporate their fan motor into models, temperature-responsive devices, or imaginative gadgets.

• Collaboration: Group assembly and testing encourages teamwork, sharing ideas, and troubleshooting.

• Confidence: Controlling a motor with invisible sensor technology sparks mastery and excitement about automation.

• Foundation for Future Learning: This project is a starting point for robotics, sensor networks, and smart appliances.

Why IR Trigger Motor Matters

The IR Trigger Motor project turns modern sensor-driven control into a hands-on science activity, connecting invisible waves to real mechanical action. With every automatic spin, students build technical skills, curiosity, and confidence to create the next generation of smart technology.

With Project 23: IR Trigger Motor, every child gets the power to automate and invent—just by waving a hand!