A switch-controlled electric fan is a simple and fun STEM project that helps students understand how basic electrical components work together. Using a small motor, a switch, and a battery, we can build a working electric fan while learning important science and engineering concepts.
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| Learn how a simple switch-controlled fan works through a hands-on STEM project. |
✳️What Is an Electric Fan?
An electric fan is a household appliance that uses an electric motor to rotate fan blades. When the blades spin, they push air forward, helping to circulate air and create a cooling effect. Electric fans are commonly used in homes, classrooms, offices, shops, hospitals, and hotels.
✳️Components Used
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| Identify all electronic and structural parts before starting the project. |
Wooden board parts (Numbered boards)
DC motor
Fan blade
Battery box
On/Off switch
Red/black wires
Double-sided tape
White glue
✳️Step-by-Step Assembly
➡️Step 1: Prepare the Parts
Open the STEM invention kit and take out all the components. Carefully separate all the wooden board parts and make sure everything is ready before starting assembly.
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| Separate and prepare all wooden board parts before assembly. |
➡️Step 2: Assemble the Base
Insert the two Number 1 boards and the two Number 2 boards together to form the base structure of the fan.
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| Assemble the base structure using boards #1 and #2. |
➡️Step 3: Attach Board Number 3
Insert board Number 3 onto the top of boards 1 and 2 to form the main platform for the switch and wiring.
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| Install the main platform for the switch and wiring. |
➡️Step 4: Attach the Battery Box
Apply double-sided tape to the bottom of the battery box. Attach the battery box near the switch for easier wiring. Thread the red wire through the square hole to connect to the switch, and thread the black wire through the small round hole from the bottom.
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| Fix the battery box near the switch for easy wiring. |
➡️Step 5: Install the Switch
Pull back both red wires slightly and press the switch into board Number 3. Thread the single red wire through the small round hole and connect it to the battery box.
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| Install the switch and route the wires correctly. |
➡️Step 6: Connect the Motor
Connect the red wire to the metal terminal on the left side of the motor and the black wire to the terminal on the right side. Insert board Number 4 into board Number 3.
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| Connect red and black wires to the motor terminals. |
➡️Step 7: Assemble the Upper Structure
Insert board Number 6 into board Number 5. Then attach board Number 5 onto boards 4 and 3. Place the motor into the top holder securely.
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| Build the motor holder and secure the motor. |
➡️Step 8: Install the Fan Blade
Carefully push the fan blade onto the motor shaft until it fits securely. The fan assembly is now complete.
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| Attach the fan blade to complete the assembly. |
✳️Testing the Fan
Insert the batteries into the battery box and switch it on. If assembled correctly, the fan blades should begin to spin. If the fan does not rotate, recheck the wiring and battery placement.
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| Switch on the circuit and see the fan spin. |