Touchless Door Bell
Introduction
A doorbell is a signaling device typically placed near a door to a
building's entrance. When a visitor presses a button the bell rings inside
the building, alerting the occupant to the presence of the visitor.
Although the first doorbells were mechanical, activated by pulling a
cord, modern doorbells are generally electric switch and the most
interesting one nowadays.
Touchless Door Bell
We have made a small mini project on modernizing of door bells.
In which the user just have to wave his hand in front of the door bells,
after getting sensed by the sensor automatically gets ringed and the
occupants are alerted about the presence of visitors.
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Circuit Diagram
Components Required1.
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3.
4.
5.
6.
7.
LM358 IC
Zero PCB Board
IR Transmitter Receiver Pair
Buzzer
LED
10K ohm Variable Resistor
Resistor (100ohm, 220ohm, 10K) etc.
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Advantages1. Easy installation.
2. Low maintenance.
3. Compact elegant design.
4. Fully automatic.
5. Consume very little energy, ideal for continuous operation.
ApplicationsUsed in every single day to day usage such as follows:
1. Hotels
2. Houses
3. Hospitals
4. Personal Cabins
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