9v Battery hacks, Switch, LED, Motor, Fan, Beginner Tutorial for students

Summary

In this video, the Hi Friends Science Projects channel demonstrates how to connect a DC motor and LED light using a 9-volt battery. The process involves gathering essential components such as a 9V battery, DC motor, LED light, resistor, switch, and a plastic propeller. The video walks through wiring the components together, including soldering the switch to the battery cap, connecting the motor’s terminals, and attaching the LED with a 1k ohm resistor. Once assembled, the motor starts rotating, and the fan spins as the circuit is powered on, offering a hands-on demonstration of basic electronics and motor operation.

Takeaways

• 😀 DC motor requires a 9-volt battery to operate.
• 😀 The DC motor has two terminals: positive (+) and negative (-).
• 😀 A 5mm LED light, with a long positive leg (+) and a short negative leg (-), is part of the setup.
• 😀 A 1k OHM resistor is needed to connect the LED light.
• 😀 The power supply is provided by a 9-volt battery.
• 😀 A plastic propeller can be attached to the DC motor for added functionality.
• 😀 A DC motor requires a battery cap and switch for easy control.
• 😀 Solder the switch to the red wire of the battery cap for power control.
• 😀 Connect the red wire to the long leg (+) of the motor and the black wire to the short leg (-) of the motor.
• 😀 Once powered, the DC motor starts rotating, and the fan spins when the switch is turned on.

Q & A

What is the purpose of the 9-volt battery in this project?

The 9-volt battery provides the necessary power supply to operate the DC motor and the LED light in the circuit.

What type of DC motor is used in the video?

The DC motor used in the video operates on 9 volts, and it has two terminals: a positive (+) and a negative (-) terminal.

Why is a resistor needed in the circuit?

The resistor is needed to limit the current flowing through the LED light to prevent it from burning out. In the video, a 1k ohm resistor is used.

How do you connect the DC motor to the power supply?

The red wire is connected to the positive terminal of the motor, and the black wire is connected to the negative terminal of the motor. These are then connected to the battery through a switch.

What role does the switch play in the circuit?

The switch controls the flow of power from the 9-volt battery to the motor and LED light. Turning the switch on or off allows the motor to start or stop rotating.

How does the propeller attach to the DC motor?

The plastic propeller is attached to the shaft of the DC motor. When the motor is powered, it rotates the propeller, creating movement or airflow.

What happens when you power on the circuit?

When the circuit is powered on by the switch, the DC motor begins rotating, and the LED light will also light up, demonstrating the functionality of both components.

Can the same circuit be used with different voltages?

This specific setup is designed for a 9-volt power supply. Using a different voltage might affect the motor's performance or damage the components if not appropriately matched.

Why is it important to identify the legs of the LED light correctly?

The LED light has a longer leg (positive) and a shorter leg (negative). Correctly identifying and connecting these legs ensures the LED lights up and operates as intended.

What should you do if the motor or LED does not work after connecting everything?

If the motor or LED doesn't work, check the connections for loose wires, ensure the resistor is correctly placed, verify the polarity of the motor and LED, and make sure the battery has sufficient charge.