HOW TO MAKE A TILT SENSOR ACTIVATED ALARM USING ARDUINO.

Summary

In this video, the presenter demonstrates how to build a simple tilt sensor using an Arduino, showcasing its ability to detect orientation changes in objects. The project features an absentia tilt sensor, which uses rollerballs to sense tilts, connected to an Arduino board. When the object tilts, the system triggers a buzzer and an LED as alerts. The sensor’s sensitivity is adjustable via a potentiometer. This project is ideal for applications like alarm systems or object monitoring, providing an easy-to-understand introduction to using tilt sensors with Arduino.

Takeaways

• 😀 The tutorial demonstrates how to use a simple absentia tilt sensor in an Arduino project.
• 😀 Tilt sensors are commonly used in alarm systems and the aviation industry for detecting orientation.
• 😀 The sensor detects the tilting of an object and triggers an alert when the object shifts position.
• 😀 A red LED and a buzzer are used to indicate when the object has been tilted beyond a set threshold.
• 😀 The tilt sensor contains a W5-0D switch with rollerballs that shift based on the object's orientation.
• 😀 The sensor is connected to a circuit with an LM 3919 comparator and a potentiometer to adjust sensitivity.
• 😀 The output from the sensor can be read by a microcontroller, such as an Arduino, to trigger other components.
• 😀 The wiring for the sensor is simple, with connections to VCC (5V), ground, and a digital pin for output.
• 😀 The potentiometer can be adjusted to change the sensitivity of the tilt sensor's detection.
• 😀 The demonstration shows that the buzzer and LED activate when the object is tilted and deactivate when it returns to its original position.

Q & A

What is the purpose of the absentia tilt sensor in this project?

The purpose of the absentia tilt sensor is to detect the orientation of an object and alert when it is tilted beyond a certain angle. This sensor is commonly used in alarm systems to monitor the orientation of objects and is also used in the aviation industry for similar applications.

How does the tilt sensor work mechanically?

The tilt sensor contains rollerballs inside a W5-0D switch. These rollerballs shift depending on the orientation of the sensor, causing a mechanical contact that detects the tilt or change in position.

What is the role of the LM9J9 comparator and potentiometer in the sensor circuit?

The LM9J9 comparator in the circuit is used to compare the input signal with a reference and generate a digital output. The potentiometer allows for the adjustment of the sensor's sensitivity to changes in orientation.

How is the tilt sensor connected to the Arduino?

The tilt sensor is connected to the Arduino via three main pins: VCC (for power), ground, and D0 (which outputs a digital signal). The D0 pin is connected to one of the digital pins on the Arduino for detection purposes.

What happens when the object being monitored is tilted?

When the object is tilted, the tilt sensor detects the change in orientation and sends a signal to the Arduino. This triggers an alarm (buzzer) and lights up an LED to indicate that the object has been tilted.

What is the role of the buzzer and LED in the system?

The buzzer and LED serve as indicators for the detection of a tilt. When the sensor detects a tilt, the buzzer sounds and the LED lights up, signaling that the object has shifted its orientation.

How can the sensitivity of the tilt sensor be adjusted?

The sensitivity of the tilt sensor can be adjusted by turning the potentiometer. Rotating the potentiometer clockwise increases the sensitivity, while rotating it counterclockwise decreases it.

What happens if the object is returned to its original position?

Once the object returns to its original position, the sensor detects that the tilt is no longer present, causing the buzzer to stop sounding and the LED to turn off.

Can the sensor detect tilts in multiple directions?

Yes, the sensor can detect tilts in multiple directions. It will respond to any shift in orientation, whether it's a tilt in one direction or the other, triggering the buzzer and LED accordingly.

Is the circuit limited to only a digital output, or can it handle analog signals as well?

The specific model of the tilt sensor used in this project has only a digital output (D0 pin). However, other models may have an additional analog output pin that provides a variable signal to further refine sensitivity or detection thresholds.