🧴 Automatic Air Freshener Dispenser Using Micromotor – DIY Project

Do you want your room to always smell fresh without spraying manually every time? With a few basic components, you can build your own automatic air freshener dispenser using a micromotor. It’s a simple and affordable project that you can finish in a day!

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🔧 Components Required:

• 1× DC micromotor (3V–6V)

• 1× Air freshener spray (manual press type)

• 1× Battery holder with switch (for AA or 9V battery)

• 1× Push lever or arm (custom made with plastic or popsicle stick)

• 1× Timer circuit (optional – 555 timer module or Arduino)

• 1× Small gear or cam (to control the motion)

• Wires, glue gun, and basic tools

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🛠️ How It Works:

The micromotor is attached to a small cam or gear mechanism. When powered on, the motor rotates and pushes down a lever connected to the spray nozzle. This presses the spray, releasing fragrance into the room. A timer can be added to automate the spray intervals.

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🔌 Circuit Diagram (Simple Setup):

If you're using a 555 timer:

• Connect the timer in monostable or astable mode to control intervals.

• Output of timer goes to motor transistor switch.

• When time triggers, the motor turns ON for a few seconds, then OFF.

If you're using an Arduino:

cpp
int motorPin = 3;

void setup() {
  pinMode(motorPin, OUTPUT);
}

void loop() {
  digitalWrite(motorPin, HIGH); // press spray
  delay(1000);                  // 1 second
  digitalWrite(motorPin, LOW);  // release
  delay(3600000);               // spray every 1 hour
}

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🧪 Assembly Steps:

1. Fix the motor on a stand or frame where it aligns with the spray nozzle.

2. Attach a cam or arm to the motor shaft to press the nozzle when the motor rotates.

3. Connect the circuit with battery and switch/timer.

4. Test spray by manually pressing the switch.

5. If using a timer, adjust the delay for desired spray frequency.

6. Enclose the setup in a box for neat look.

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✅ Benefits of This Project:

• Keeps room fresh automatically

• Cost-effective DIY solution

• Great learning project for beginners

• Can be powered by batteries or USB

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💡 Tips:

• Use a strong enough micromotor to press the spray button.

• You can also add a motion sensor to spray only when someone enters the room.

• Reuse parts from old toys or gadgets to reduce cost.

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📸 Final Thoughts:

This DIY air freshener dispenser is not only useful for your home or office, but also an excellent electronics project for learning automation using micromotors and basic circuits.