1. The **HC-SR04** emits ultrasonic waves and measures the time it takes for them to bounce back. 2. The **Arduino Nano** calculates the distance using the speed of sound. 3. If an object is detected ...

Smart Blind Stick using Arduino Circuit Diagram. The below circuit diagram shows the complete hardware wiring setup of the Arduino-based Smart Walking Stick for the Blind people, detailing how the ...

1 Arduino Ultrasonic Sensor (HC-SR04) 1 buzzer; Ultrasonic sensor, mounting circuit; It is a very simple circuit. On the one hand, we will have all the alerts, acoustic and visual, and on the other ...

Instead, it relies on an ultrasonic distance sensor to detect a hand (or foot) waved in front of the door. An Arduino Leonardo runs the show, sounding a buzzer when the ultrasonic sensor is triggered.

The microcontroller which will be used to control all of the sensors in the circuit is Arduino Nano. The power supply used for working of the circuit is 9V battery and this 9V voltage is dropped down ...

Arduino Nano; 3× Ultrasonic Sensor; JQ6500 Voice Sound Module; 8Ω Speaker; 1 KΩ Resistor; JQ6500 Voice Sound Module. JQ6500 Voice Sound Module is perfect for broadcasting a message on the speaker like ...

In this project, the ultrasonic sensor module type KY-050 is used together with an Arduino and a type KY-012 active buzzer to help while reverse parking our vehicle. As the distance to the objects ...

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