Summary of Arduino HC-SR04 How to use Ultra Sonic Sensor
This article describes building a practical rangefinder using an Arduino board and an HC-SR04 ultrasonic sensor. The device estimates distance by transmitting signals and measuring the time until reception, capable of ranging from 2cm to 400cm. The project integrates these components with an LCD screen for display. While effective, the author notes difficulties beyond the 2-meter mark. Detailed wiring instructions and code are referenced for implementation.
Parts used in the Arduino HC-SR04 Rangefinder:
- Arduino (AVR development board)
- HC-SR04 Ultrasonic Sensor
- LCD Screen
Arduino HC-SR04
The Arduino HC-SR04 is different from most of those commonly seen on the market, which have 4 pins compared to 3 pins. But the operation principle is the same, transmit signal, and depends on when the signal is received to estimate the distance.
Arduino HC-SR04 not only inexpensive but also practical, use a sample AVR development boar –Arduino , with a LCD screen , you can make a easy rangefinder device , which can ranging 2cm to 400cm . (although i couldn’t get it work more than 2 meters
Please don’t ask me how to use LCD, as it’s been explained really well on the Arduino official site, please check here:
Now first connect the circuit as below :
Download the code below :
Major Components in Project
Arduino
For more detail: Arduino HC-SR04 How to use Ultra Sonic Sensor
- How does the Arduino HC-SR04 estimate distance?
It operates by transmitting a signal and depending on when the signal is received to estimate the distance. - What is the measurement range of this device?
The device can range from 2cm to 400cm, though the author could not get it working more than 2 meters. - Is the Arduino HC-SR04 inexpensive?
Yes, the article states that the Arduino HC-SR04 is not only inexpensive but also practical. - Does the HC-SR04 have 3 or 4 pins?
The Arduino HC-SR04 has 4 pins compared to the 3 pins commonly seen on other market versions. - Where can I find instructions on how to use the LCD?
Instructions on how to use the LCD are explained well on the official Arduino site at the provided URL. - What type of development board is recommended for this project?
The project uses a sample AVR development board called Arduino. - Can this project be made as an easy rangefinder device?
Yes, using the Arduino with an LCD screen allows you to make an easy rangefinder device. - Does the operation principle differ from common sensors?
No, although it has 4 pins instead of 3, the operation principle is the same as most others on the market.
