Wokwi simulator - Distance measurement using ultrasonic sensor HC-SR04 with OLED display and ESP32

In this tutorial, we demonstrate how to measure distance using the HC-SR04 ultrasonic sensor and display the measured value in centimeters on a 0.96” I2C OLED Display with an ESP32 microcontroller.
The complete project is implemented and tested using the Wokwi online simulator, making it easy for beginners to learn without requiring real hardware.

We interface the ultrasonic sensor to calculate the distance based on echo time and show the live reading on an OLED screen in real-time.
wokwi.com
Program code (Program 2): https://drive.google.com/file/d/1ZpZggBjrl6a0i8PM1cSNUjO39Ea25g30/view?usp=sharing
Components Used

1.ESP32 Dev Board
2. HC-SR04 Ultrasonic Sensor
3.0.96" OLED Display (I2C – SSD1306 driver)
4.Jumper wires

Applications

1. Smart Parking Systems
2.Automatic Water Level Control
3.Obstacle Detection Robot
4.Distance-based alarms
5. Home automation trigger switches

Видео Wokwi simulator - Distance measurement using ultrasonic sensor HC-SR04 with OLED display and ESP32 канала sri ranjani simulink