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Arduino Mega
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working really hard
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Dome
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The Aftermath
Inspiration The inspiration for the TDB (Touchless Door Bell) came from the growing need for contactless solutions, especially in today’s world where hygiene and safety are a top priority. With many people looking for ways to reduce physical contact with shared surfaces, we envisioned a system that would allow visitors to alert the homeowner without touching any buttons.
What it does The TDB is a contactless doorbell system that detects a person's presence via a sensor. When a visitor approaches the door, the system activates, triggering an LCD display with a welcome message or an alert. An optional buzzer or light is also activated, notifying the homeowner of the visitor’s arrival. This system eliminates the need to physically press a doorbell button, providing both convenience and safety.
How we built it We built the TDB using an ultrasonic sensor for presence detection, an Arduino or microcontroller for processing, and a 16x2 LCD to display messages. The system also incorporates a buzzer and LED indicators. The ultrasonic sensor detects the visitor's proximity, triggering the system's response. We used a potentiometer to adjust the LCD contrast and programmed the system to activate different responses based on user input or predefined actions.
Challenges we ran into One of the key challenges was ensuring accurate detection at different distances, as the sensor needed to reliably detect the visitor without false triggers. Additionally, fine-tuning the LCD contrast for readability in various lighting conditions required some iteration. Power management also posed a challenge to ensure the system operated efficiently while minimizing power consumption.
Accomplishments that we're proud of We’re proud of creating a system that’s not only functional but also practical and easy to use. The touchless feature is particularly timely, and we’re pleased with how the system integrates multiple components smoothly. The project has a clean user interface, and the detection works reliably.
What we learned Through this project, we gained deeper insights into sensor calibration, working with microcontrollers, and integrating various components such as sensors, displays, and actuators. We also learned about user interaction design, focusing on providing a simple yet effective user experience.
What’s next for TDB - Touchless Door Bell Next, we plan to refine the system by adding more features like Wi-Fi integration for remote notifications, the ability to record visitor data, and even integration with smart home systems. We also aim to make the system more adaptable to different door setups and environments, adding further customization options for users.
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