These small modules are available starting at 12 bucks and can measure the distance up to 45 meters by ultrasound and are suprisingly accurate. Reading hcsr04 ultrasonic sensor s output to trigger the ultrasonic sensor, youll have to send a trigger pulse from your microcontroller using any io pin. In this instructable we will learn about hc sr04 widely known as ultrasonic sensor, how it works and how to interface with the nodemcu. Now that we have seen some theory lets get started with our project. Hc sr04 p is a wide range of ultrasound working voltage measuring module distance. Ultrasonic sensor hcsr04 with arduino tutorial arduino. The hc sr04 is a long range ultrasonic sensor module for measuring the distance or we can also use it for detecting the objects. The detection range as written in the data sheet is between 2 cm to 4 m, but experiments show that 3 cm to 2 m is more realistic. The hc sr04 ultrasonic sensor uses sonar to determine distance to an object like bats or dolphins do. The hc sr04 ultrasonic distance sensor consists of two ultrasonic transducers. Ultrasonic distance measurement with hcsr04 arobito 0. This post shows how to interface pic16f84a microcontroller with hcsr04 ultrasonic sensor and make a distance meter. Microcontroller readsmonitors this pin to detect the obstacle or to find the distance.
This presentation deals with the verification of the accuracy of measurement distance ultrasonic sensor in the current environment. Pic16f84a with hcsr04 ultrasonic sensor example ccs c. After buying a hc sr04 from amazon, i could not get it to work out of the box. It sends an ultrasonic wave of a certain frequency that comes back after hitting the object and calculates the time traveled by it. It comes complete with ultrasonic transmitter and receiver module.
Distance measurement using arduino ultrasonic sensor is a very easy project to measure shorter distance precisely. This a very simple project to find the distance between. As the name suggests, the hc sr04 ultrasonic distance ranging sensor uses ultrasound to measure distance from a object ahead of the sensor. Not wanting to concede i had a doa sensor on my hands, i searched for a simple example setup. The modules includes ultrasonic transmitters, receiver and control circuit. Ultrasonic sensor hc sr04 is a sensor that can measure distance. The hc sr04 ultrasonic distance sensor is a popular affordable sensor that provides 2cm 0. Mar 30, 2017 here we are using a high precision hcsr04 ultrasonic sensor module for the arduino based distance measurement.
Each hc sr04 module includes an ultrasonic transmitter, a receiver and a control circuit. How to measure distance using ultrasonic sensor hcsr04. Using the same principle as bats echo location, this module uses trigger and echo pin. This popular ultrasonic distance sensor provides stable and accurate distance measurements from 2cm to 450cm. Hc sr04 hc sr04p ultrasonic module distance measuring sonar sensor module. If there is a returning pulse signal, it is measured, and the length of time the pulse remains at. Despite the popularity of hc sr04, the grove ultrasonic distance sensor. Both these ultrasonic range modules are fairly cheap modules, expect the hysrf05 to be. In this tutorial we will see how to interface an ultrasonic distance sensor hc sr04 with arm7 lpc2148 microcontroller.
The ultrasonic sensor is consists of transmitter and receiver modules. Hcsr04 specifications the sensor chosen for the firefighting drone project was the hcsr04. The hcsr04 module sends out an ultrasonic ping and then detects its return after bouncing off something in the distance. It measures accurate distance using a noncontact technology a technology that involves no physical contact between sensor. An hc sr04 ultrasonic module is a noncontact range measuring device consist of an ultrasonic. Hcsr04 ultrasonic distance measurement control module. The measured values are sent to asksensors iot platform through wifi, so the user will be. Nov 24, 2018 this is the hc sr04 ultrasonic ranging sensor. The hcsr04 ultrasonic distance sensor is an inexpensive device that is very useful for robotics and test equipment projects.
The hc sr04 module includes transmitters, a receiver and control circuit. Followed by, a walkthrough of the ultrasonic python module. The major problem while measuring the distance between two ultrasonic sensor is that, the receiver sensor will not know when the transmitter sensor has sent the ultrasonic wave. How to measure distance between two ultrasonic sensors. It has a focus of less than 15 degrees and an accuracy of about 2mm. Interfacing hcsr04 ultrasonic distance sensor with lpc2148. The sensor module has an ultrasonic transmitter and receiver. Oct 31, 2016 hc sr04 ultrasonic module distance measuring using the serial monitor display. Distance measurement using arduino and ultrasonic sensor. Arduino distance sensor using the hcsr04 pi my life up. Ultrasonic sensor module hc sr04 tutorial maxphi lab. The module, also named lc mini ultrasonic tester, consists of an 8bit stm microcontroller as the brain as informed by my supplier.
Sainsmart hcsr04 ranging detector mod distance sensor blue. In this tutorial, well create a distance meter using the ultrasonic sensor hc sr04 with an alphanumeric 16. It will also explain how to wire the sensor up to a microcontroller and how to takeinterpret readings. Ultrasonic ranging module hc sr04 product features. This project aims at measuring the distance using an ultrasonic sensor hc sr04 and an esp8266 wifi module.
The ultrasonic sensor module is a convenient way for measuring distances from objects. Distance sensor mysensors create your own connected home. This distance sensor works by sending out an ultrasonic wave from the trigger terminal and detecting whether there is a pulse signal back through the echo. Hcsr04hcsr04p ultrasonic module distance measuring sensor. Waterproof jsnsr04t ultrasonic distance sensor with. The jsnsr04t is an easy to use waterproof ultrasonic distance sensor with a range of 25 to 450 cm.
Hcsr04 ultrasonic distance sensor with arduino dronebot. There are four pins in the module vcc, gnd, trigger and echo. Arduino ultrasonic sensor hcsr04 or hysrf05 energia zero. This module transmits an ultrasonic signal, picks up its echo, measures the time elapsed between the two events and outputs a waveform whose high time is modulated by the measured time. Ultrasonic sensors are relatively simple devices and extremely useful in a lot. Ultrasonic sensor hc sr04 is used here to measure distance in range of 2cm400cm with accuracy of 3mm. And also how to measure the distance using hc sr04. Pdf application of ultrasonic sensor for measuring distances in. It will give a brief explanation of how ultrasonic sensors work in general. In terms of accuracy and overall usefulness, hcsr04 ultrasonic distance sensor is really great, especially compared to other lowcost distance detection sensors. Ultrasonic distance measuring with hcsr04 module and arduino. This tiny sensor is capable of measuring the distance between itself and the. Here we are using a high precision hcsr04 ultrasonic sensor module for the arduino based distance measurement.
In this tutorial this sensor is connected to arduino to achieve this function. It emits an ultrasound at 40 000 hz 40khz which travels through the air and if there is an object or obstacle on its path it will bounce back to the module. Complete guide for ultrasonic sensor hcsr04 with arduino. Hello, here we are using the hc sr04 ultrasonic module to measure distance, its a classic arduino project to learn how to use the board, this module can measure up to 5m its quiet accurate and easy to calibrate as we saw in the video, you can integrate it in your projects, especially robots to detect obstacles or measure distance. May 10, 2019 as described above, the main job of the hc sr04 is adding ultrasonic distance measuring capabilities to projects. Apr 27, 2014 the hcsr04 module includes transmitters, a receiver and control circuit. To obtain the distance, measure the width ton of echo pin. This sensor uses ultrasonic sound to measure distance. The ultrasonic sensor is used to measure the distance. It offers excellent noncontact range detection with high accuracy and stable readings in an easytouse. After spending far too long on this than i felt i needed to, i decided to.
Hcsr04 user guide part 1 ultrasonic introduction 1. This section contains the specifications and why they are important to the sensor module. This sensor is a very popular sensor used in many applications where measuring distance. Hcsr04 datasheet ultrasonic ranging detector sensor.
Buy sainsmart hc sr04 ranging detector mod distance sensor blue. Module size and software is fully compatible with the old hc sr04 version. That doesnt mean that the hcsr04 sensor is capable of measuring everything. First, we connect the ultrasonic module to the raspberry pi gpio pins. By measuring the round trip time and knowing the speed that sound travels, a calculation can be made to determine the distance of the object from the hcsr04. Hcsr04 is an ultrasonic ranging module that provides 2 cm to 400 cm noncontact measurement function. The one acts as a transmitter which converts electrical signal into 40 khz ultrasonic sound pulses. Use an hc sr04 ultrasonic sensor to give your robot the perception of distance. Following diagrams shows a few situations that the hc sr04 is not designed to measure. The hc sr04 ultrasonic distance measurement control module automates the use of the hc sr04 ultrasonic module and provides a direct readout of the distance. In this tutorial you will learn how the hc sr04 ultrasonic distance sensor works and how to use it with arduino. Ultrasonic sensor hc sr04 is commonly used to find the distance of an object from one particular point. It can be perfectly interrupted with the old hc sr04 version.
It is really important to note that there are various types if ultrasonic sensors which can be used for different applications. Complete guide for ultrasonic sensor hcsr04 with arduino this article is a guide about the popular ultrasonic sensor hc sr04. You could, for example, use it to check the water level in a tank or as a parking sensor in your garage. Ultrasonic sensor interfaced with nodemcu esp8266 12e for. This sensor is used to measure the accurate distance between the target and the sensor. Well explain how it works, show you some of its features and share an arduino project example you can follow to integrate in your projects.
If it receives them it produces an output pulse whose width can be used to determine the distance the pulse travelled. It offers excellent noncontact range detection with high accuracy and stable readings in an easytouse package. This tiny sensor is capable of measuring the distance between itself and the nearest solid object, which is really good information to have if youre trying to avoid driving into a wall. The principle, as well as the usage of the module, are both surprisingly simple. It is an ultrasonic sensor, also known as an ultrasonic transducer that is based on a transmitter and receiver and mainly used to determine the distance from the target object. Today, ill discuss the basic introduction to hcsr04 ultrasonic sensor. The working principle, applications and limitations of. This economical sensor provides 2cm to 400cm of noncontact measurement functionality with a ranging accuracy that can reach up to 3mm. The ultrasonic sensor module that we are using is hc sr04. The range of the ultrasonic sensor is around 2cm to 400cm. Followed by, a walkthrough of the ultrasonic python module features. If you are planning to build a water level measuring system or if you need to take other distance measurements outside, then this is the sensor. Introduction to hcsr04 ultrasonic sensor hcsr04 is an ultrasonic sensor mainly used to determine the distance of the target object.
Hcsr04 ultrasonic sensor working as shown above the hc sr04 ultrasonic us sensor is a 4 pin module, whose pin names are vcc, trigger, echo and ground respectively. Distance measurement using arduino ultrasonic sensor. The hcsr04 ultrasonic sensor uses sonar to determine distance to an object like bats or. There is a 4pin female header on the assembly for plugging in the hc sr04 ultrasonic sensor. Aug 08, 2015 hc sr04 is an ultrasonic ranging module designed for embedded projects like this. Microcontroller applies 10 us trigger pulse to the hcsr04 ultrasonic module. Ultrasonic sensors such as the hc sr04 can efficiently measure distances up to 400 cm with a slight tolerance of 3 mm. The purpose of this file is to explain how the hcsr04 works. It has been fairly easy to do this with the arduino and the code is also pretty simple. This sensor module includes ultrasonic transmitter, ultrasonic. The hcsr04 ultrasonic sensor uses sonar to determine distance to an object like bats or dolphins do. Hcsr04 is an ultrasonic ranging module that provides 2 cm to 400 cm non contact measurement function. Sep 18, 2017 hc sr04 ultrasonic sensor working as shown above the hc sr04 ultrasonic us sensor is a 4 pin module, whose pin names are vcc, trigger, echo and ground respectively. The hcsr04 ultrasonic sensor uses sonar to determine the distance of an object just like the bats do.
Considering the travel time and the speed of the sound you can calculate the distance. We will start with a simple ultrasonic range finder that measures the output distance to the serial monitor. Using two ultrasonic sensors hc sr04 apr 17, 2014, 03. The vcc pin supplies the power to generate the ultrasonic. This distance sensor works by sending out an ultrasonic wave from the trigger terminal and detecting whether there. That doesnt mean that the hc sr04 sensor is capable of measuring everything. Before getting started you must know about ultrasonic sensor hc sr04, which is a lowcost sensor. Ultrasonic ranging module hc sr04 provides 2cm 400cm noncontact measurement function, the ranging accuracy can reach to 3mm. The sensor module consists of ultrasonic transmitter, receiver and the control circuit. Ultrasonic pulses travel outward until they encounter.
The hcsr04 ultrasonic sensor can be used to detect objects in a range of up to feet away. Ultrasonic distance measurement with hcsr04 the hcsr04 is a complete ultrasonic distance measurement device that is very simple to use and costs just about 3 eur. Distance measuring by ultrasonic sensor request pdf. It offers excellent noncontact range detection with high accuracy and stable readings in an easytouse package from 2 cm to 400 cm or 1 to feet. We have a good howto for these modules on our arduinoinfo wiki here. Ultrasonic hcsr04 sensor python library for raspberry pi. This guide takes you through the steps to install and set up the new hc sr04 distance measuring sensor python library. Wyph ultrasonic module hc sr04 distance measuring ranging sensor for arduino uno mega r3 mega2560 duemilanove nano robot pack of 10pcs. An ultrasonic shortcut getting the hcsr04 transducer up. The hc sr04 gets triggered by a ten microsecond high signal on the trigger pin. How to use hcsr04 ultrasonic module to measure distance.
In terms of accuracy and overall usefulness, hc sr04 ultrasonic distance sensor is really great, especially compared to other lowcost distance detection sensors. The hcsr04 ultrasonic sensor uses sonar to determine distance to an object like bats do. Ultrasonic sensors use sound to determine the distance between the sensor and the. Following diagrams shows a few situations that the hcsr04 is not designed to measure. Hcsr04 datasheet ultrasonic proximity sensor custom. It comes complete with ultrasonic transmitter and receiver modules.
The ultrasonic distance sensor module hc sr04 can measure distances from 2 centimeters up to 5 meters if youre lucky. Using a raspberry pi distance sensor ultrasonic sensor hc sr04 for many outdoor projects a distance measurement is necessary or advantageous. It can be used for distance measurement with a plugin hc sr04 module to display results distance. The ultrasonic sensor hc sr04 can measure distances form 2cm to 400cm with an accuracy of 3mm. This small module is capable of measuring the distance within the range of 2cm 400cm. In this article we will see how to use cheap hc sr04 sensor along with an arduino to measure distance with an object. Ultrasonic distance measuring module hc sr04 price reduced again. Thats why its recommended to give it a read, in case you havent yet. This sensor uses ultrasonic sound to measure distance just like bats and dolphins do. Hcsr04 ultrasonic sensor arduino tutorial 5 examples.
Orders are shipping as normal within one business day for locally stocked products. Ultrasonic distance measurement using arduino how to make. This module operates at 5 volt with a consumption of 15 ma current. Using a raspberry pi distance sensor ultrasonic sensor hcsr04. The ranging accuracy can reach to 3mm and effectual angle is pdf datasheet. Ultrasonic distance meter using hcsr04 and 8051 gadgetronicx. Using the same principle as bats echo location, this module uses trigger and echo pin to send a signal and listen for it to be bounced back. Recently i made an internet of things project which involves an ultrasonic sensor and nodemcu wifi module in it. Introduction to hcsr04 ultrasonic sensor the engineering. In a previous tutorial, weve discussed how hc sr04 ultrasonic sensor works and how to interface it with a microcontroller. This sensor is a very popular sensor used in many applications where measuring distance or sensing objects are required. An hc sr04 ultrasonic module is a noncontact range measuring device consist of an ultrasonic transceiver unit transmitter and receiver section and a control circuit. Arduino ultrasonic module hcsr04 distance sensor measuring.
Measuring distance using ultrasonic sensor arduino project hub. Pdf ultrasonic sensors allow us to equip robots with a means of perceiving surrounding objects. Ultrasonic sensor module description the ultrasonic sensor module is a convenient way for measuring distances from objects. As a measuring sensor was chosen sfr08 type equipped by an i2c. The sensor module used here is hcsr04, which is a noncontact ultrasonic measurement device. This is a simple tutorial on interfacing ultrasonic sensor with nodemcu wifi module and measure distance. Details about arduino ultrasonic module hc sr04 distance sensor measuring transducer. It offers excellent range accuracy and stable readings in an easytouse package.
702 22 661 1504 34 188 365 990 146 428 146 351 765 5 1294 816 23 456 760 653 25 1431 1198 1485 424 1126 190 1508 1323 70 66 803 1146 1303 1422 1184 494 220 1115 407 708