About this document
Touchless Doorbell Project Overview by DARSHAN KUDACHE is a document available to read on EtoBox.
This document describes a touchless doorbell circuit that uses an ultrasonic transmitter and receiver to detect when a person is in front of the door and automatically rings the doorbell. When the transmitter sends ultrasonic waves that hit a person, the receiver detects the reflection and triggers a buzzer circuit that acts as the doorbell. The circuit provides advantages like allowing homeowners to quickly open the door, being helpful for short people, requiring no wiring, having portability, and providin
- Author
- DARSHAN KUDACHE
- Language
- EN