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HC-SR04 Ultrasonic Sensor Projects

Master the HC-SR04 ultrasonic sensor. Build distance meters, parking sensors, liquid level indicators, and obstacle detection systems.

Related Hardware Tutorials & Guides

Step-by-step hardware project tutorials for your engineering project

Line Following Robot Using Arduino

Beginner

Build a line following robot using Arduino and IR sensors that automatically follows a black line path, introducing robotics, sensors, and motor control.

ESP32 Touch Sensor LED Control

Intermediate

Control an LED using ESP32's built-in capacitive touch sensors without physical buttons, demonstrating modern touch-based interfaces.

Simple Burglar Alarm Using Arduino

Beginner

Build a simple burglar alarm using Arduino and PIR motion sensor that triggers a buzzer when unauthorized movement is detected.

ESP32 Touch Sensor LED Control

Intermediate

Control an LED using ESP32's built-in capacitive touch sensors without physical buttons, demonstrating modern touch-based interfaces.

ESP32 Temperature & Humidity Web Server (DHT22)

Intermediate

Monitor real-time temperature and humidity using ESP32 and DHT22 sensor through a Wi-Fi based web server dashboard.

Obstacle Avoiding Robot Using Arduino

Beginner

Build an autonomous obstacle avoiding robot using Arduino and ultrasonic sensor that detects obstacles and changes direction automatically.

Data Logger with SD Card Using Arduino

Advanced

Design a data logging system using Arduino and SD card to store real-time sensor data for analysis, monitoring, and long-term record keeping.

Ultrasonic Distance Measurement Using Arduino

Beginner

Measure distance using an ultrasonic sensor and Arduino by calculating the time taken for sound waves to reflect back from an object.

Automatic Washroom Light Using IR Sensors (Arduino Based)

Beginner

An automatic washroom light system using Arduino and IR sensors that turns lights ON when motion is detected and OFF when the area is empty, saving electricity.

ESP32 Touch Sensor LED Control

Intermediate

Control an LED using ESP32's built-in capacitive touch sensors without physical buttons, demonstrating modern touch-based interfaces.

Soil Moisture Sensor System Using Arduino

Beginner

Design a soil moisture monitoring system using Arduino that measures soil water content and indicates when plants need watering.

ESP32 ThingSpeak Data Logger

Intermediate

An ESP32-based data logging system that uploads sensor data to ThingSpeak cloud for real-time visualization and analysis.