In the battle against COVID-19, social distancing is vital. While we’re encouraged to stay home, essential visits may be necessary. However, traditional doorbells can transmit the virus through touch. A solution is to convert them into contactless doorbells using IoT. An Arduino board and an Ultrasonic Sensor HC-SR04 are used to sense a person’s presence and activate a Servo motor to press the doorbell switch. This setup is cost-effective and helps prevent virus spread. The Arduino microcontroller plays a central role, enabling a buzzer sound as well. This contactless doorbell minimizes physical contact, enhancing safety during the pandemic.

• Arduino Automation
• IoT Doorbell