Mudah Membuat Hand Sanitizer Otomatis Tanpa Arduino dan Tanpa Servo

Summary

In this tutorial, the presenter walks students through the process of creating an automatic hand sanitizer dispenser using a mini submersible water pump and an infrared obstacle avoidance sensor. The video explains the working principle behind the dispenser, how it detects your hand to activate the pump, and provides a step-by-step guide on assembling the components, including the water pump, sensor, transistor, and tubing. With simple tools and affordable components, viewers can easily build an efficient, hands-free sanitizer dispenser ideal for daily use, making the project both educational and practical.

Takeaways

• 😀 The video explains how to create an automatic hand sanitizer dispenser, which is easy to build and affordable, ideal for passing the time during holidays.
• 😀 The main components used in this project include a submersible water pump, an infrared obstacle avoidance sensor, a PNP transistor, and a few other electrical components.
• 😀 The automatic hand sanitizer dispenser works by detecting hand proximity using an infrared sensor, which triggers the pump to release the sanitizer.
• 😀 The principle behind the device involves using infrared light from the sensor to detect obstacles, like a hand, which activates the water pump through a transistor circuit.
• 😀 The pump operates when the infrared light reflects off a hand and is detected by the photodiode, causing current to flow and power the pump.
• 😀 When no hand is detected, the infrared light is not reflected, so the sensor output stays at a higher voltage, and the pump remains off.
• 😀 To make the device, you need seven main components: a mini submersible water pump, flexible tubing, an infrared sensor, a PNP transistor, resistors, a container, and connecting wires.
• 😀 The process involves preparing the components, setting up the circuit, and connecting everything as per the schematic provided in the video.
• 😀 The video demonstrates the testing process where the pump works as expected, releasing water when a hand is placed near the sensor, simulating how a sanitizer dispenser would function.
• 😀 After successful testing, the device can be filled with disinfectant liquid (not gel) to make a fully functional automatic hand sanitizer dispenser, ready for practical use.

Q & A

What is the purpose of this tutorial?

The purpose of this tutorial is to guide viewers on how to create a DIY automatic hand sanitizer dispenser using simple and affordable materials.

What is the main principle behind the automatic hand sanitizer dispenser?

The dispenser works based on an infrared obstacle avoidance sensor. When a hand is detected near the sensor, it triggers a submersible pump to release the sanitizer automatically.

How does the infrared obstacle avoidance sensor work?

The sensor emits infrared light, which reflects off an object (like a hand) and is detected by a photodiode. This triggers a change in voltage that activates the pump to dispense sanitizer.

What are the key components required to build the automatic hand sanitizer dispenser?

The key components include a submersible pump, a water tube, an infrared sensor, a PNP transistor, a 1k resistor, flexible wiring, and a container (such as a reused jar).

How can you ensure the pump is working before starting the assembly?

You can test the pump by connecting it to a power source, like a power bank or charger, to ensure it works properly before proceeding with the assembly.

What is the role of the PNP transistor in the circuit?

The PNP transistor acts as a switch. When the sensor detects an object (like a hand), it allows current to flow and activates the pump.

Why is a 1k resistor used in the circuit?

The 1k resistor is used to limit the current between the sensor and the transistor, preventing damage to the transistor from excessive current.

What should you do if the dispenser does not work as expected?

If the dispenser does not work, check the wiring and connections, ensure the sensor is properly aligned, and verify that all components are functioning, including the pump and the transistor.

Can the hand sanitizer dispenser be used with other liquids besides hand sanitizer?

Yes, the dispenser can be used with any liquid that is not too thick, as the pump is designed to dispense liquid, not gel-like substances.

What improvements can be made to this DIY project?

Improvements could include refining the sensor placement for better detection, enhancing the finishing touches, and ensuring the dispenser is more durable and stable for long-term use.