Sep 01, 2016 hcsr04 ultrasonic sensor timing diagram. Now based on the parameters, sound speed 220ms and time taken for the echo to reach the source, it. This sensor has proved itself worthy by fitting into many projects which involves obstacles detection, distance measuring, environment mapping etc. Jun 08, 2015 interfacing hc sr04 ultrasonic rangefinder with pic 16f877a microcontroller. Connect the components and wires as shown in the two pictures. Interfacing hcsr04 ultrasonic distance sensor with atmega32. Interfacing pic microcontroller with hcsr04 ultrasonic sensor circuit. Sensors acts as the eyes and ears for all embedded application, it helps the digital microcontroller to understand what is actually happening in this real analog world. This tutorial will show you how to interface this sensor with atmega8 microcontroller. Sensors, microcontroller, ultrasonic sensor, temperature. In order to measure the distance youll need to execute the. Mar 16, 2018 interfacing hc sr04 ultrasonic distance sensor with atmega32 microcontroller. Oct 06, 2018 interfacing pic microcontroller with hc sr04 ultrasonic sensor circuit. Today i will give you a tutorial on the ultrasonic sensor hcsr04.
The timing diagram of the hcsr04 ultrasonic sensor is shown below. An ultrasonic range finder does this through sound waves. Since it works on the principle of reflection of sound waves, its operation is unaffected by sunlight as opposed to ir sensors. Hc sr04 ultrasonic sensor with pic16f877a if this is your first visit, be sure to check out the faq by clicking the link above. It offers excellent noncontact range detection with high accuracy and stable readings in an easytouse package. Interfacing hcsr04 ultrasonic sensor to pic microcontroller. Ultrasonic sensor hcsr04 provides an output signal proportional to distance based on the echo. In todays tutorial, i am come up with another interesting sensor interfacing with pic microcontroller that is hcsr04 ultrasonic sensor. The sensor here generates a sound vibration in ultrasonic range upon giving a trigger, after that it waits for the sound vibration to return. Well also develop the necessary firmware to interface the ultrasonic sensor and display the. Interfacing hcsr04 ultrasonic sensor to arduino uno. The hc sr04 sensor is an ultrasonic sensor that detects obstacles in front of him, from a minimum distance of 2cm to 4m, operating at a frequency of 40khz, has a measuring angle of about 15 degrees. Jan 04, 2016 the program will be written using mikroc pro for pic. Dec 16, 20 hcsr04 is a very common ultrasonic sensor and it is normally found in arduino kits or projects.
The library for this sensor is widely available for the arduino platform but not for pic. We have the vcc and gnd pins for power supply then the trig and echo pins for signal information and i will explain the use of these pins, also the sensor has an ultrasonic transmitter and receiver with one oscillator to generate a 4 khz ultrasonic sound that allows you to measure distances up to 2 meters. A simple ultrasonic range finder using 8051 microcontroller is presented in this article. Ultrasonic sensor interfacing with pic microcontroller and how to measure distance with hcsr04 ultrasonic sensor. Raspberry pi variant is also available at this link the interface is very simple and does not require too many commands or complex software. Hcsr04 arduino nano ultrasonic sensor and processing. Below i have attached the code which i have used and only one sensor is working for that code. Distance meter project circuit schematic diagram is shown below. Interfacing hcsr04 ultrasonic distance sensor with pic microcontroller pic 16f877a is the heart of this circuit. Ultrasonic ranging module hc sr04 product features. This module includes ultrasonic transmitter, ultrasonic receiver and its control circuit. Hc sr04 ultrasonic sensor interfacing with arm7 lpc2148 example. In this article we will learn how ultrasonic sensor works and how to interface hc sr04 with pic16f877a microcontroller to measure the. Each hcsr04 module includes an ultrasonic transmitter, a receiver and a control circuit.
This economical sensor provides 2cm to 400cm of noncontact measurement functionality with a ranging accuracy that can reach up to 3mm. Hcsr04 ultrasonic sensor trigger pin is connected to rb0 pin and echo pin is connected to rb1 pin. Lab9 ultrasonic sensor hcsr04 interfacing with pic. The hcsr04 is an ultrasonic sensor which can be used to measure distance anywhere between 2cm to 450cm theoretically. Hcsr04 ultrasonic sensor interfacing with lpc1768 example. This program displays the distance measured by the sensor hc sr04 on display 2x16. All the digital pins are occupied and im left with the analog pins a0 a5.
The hc sr04 can be used to detect objects in the range of 2cm to 4m. It is able to measure distances from 2cm to 400cm with an accuracy of about 3mm. Ultrasonic sensor interfacing with pic microcontroller. Raspberry pi variant is also available at this link the interface. This sensor has proved itself worthy by fitting into many. For any project to come alive, we need to use sensors. Interfacing pic16f877a with hcsr04 ultrasonic sensor ccs c. Ultrasonic sensor hcsr04 with pic microcontrollers tutorial. Ultrasonic sensor hcsr04 philippines makerlab electronics. Im trying to interface two hc sr04 ultrasonic sensors to arduino uno. Interfacing hcsr04 ultrasonic sensor with raspberry pi. May 15, 2012 hi, i need help with my c programming, i am using pic 16f877a and ultrasonic sensor hc sro4 module to control direction of motor.
Its actually very simple by referring to the timing diagram. Distance meter using pic16f887 microcontroller and hcsr04 ultrasonic sensor. Ultrasonic range finder using 8051 and hcsr40 ultrasonic module. Sensors acts as the eyes and ears for all embedded application, it. This ultrasonic rangefinder can measure distances up to 2. This sensor is a very popular sensor used in many applications where measuring distance or sensing objects are required. Sold by atomic market and ships from amazon fulfillment. Buy hcsr04 ultrasonic sensor for embedded system avr pic. Sep 26, 2017 demonstration of distance measurement using ultrasonic sensor hc sr04 and pic microcontroller. Interfacing hcsr04 ultrasonic sensor with pic microcontroller. The microcontroller runs with 8mhz crystal oscillator.
Feb 23, 2016 hc sr04 is an ultrasonic sensor which works on the principle of sonar to calculate distances from a far object. Aug 12, 2014 interfacing hc sr04 ultrasonic distance sensor with pic microcontroller. Interfacing pic mcu with hcsr04 ultrasonic sensor mplab. Interfacing ultrasonic sensor hcsr04 with pic microcontroller. Interfacing pic16f877a with hcsr04 ultrasonic sensor circuit. The senor receives this signal and converts it to an electric signal. It is able to measure distances from 2cm to 400cm with an accuracy of about. A 8mhz crystal is connected to osc1 and osc2 pins of pic, to provide clock for its operation. It will give a brief explanation of how ultrasonic sensors work in general. It will also explain how to wire the sensor up to a microcontroller and how to takeinterpret readings. This post is about building a basic distance meter with ultrasonic hcsr04 sensor and pic micro controller. We are using this sensor because it is a low cost and easily available module. At89s51 microcontroller and the ultrasonic transducer module hc sr04 forms the basis of this circuit.
This will turn on a led when an obstacle placed in front of the ultrasonic sensor at a specific distance or distance less than that. Embedded systems tutorials microchip pic microcontrollers. Interfacing hcsr04 ultrasonic rangefinder with pic 16f877a. Interfacing hcsr04 ultrasonic sensor with pic microcontroller 2. Lab9 ultrasonic sensor hcsr04 interfacing with pic microcontroller. Hc sr04 ultrasonic distance sensor is a popular and low cost solution for noncontact distance measurement function. Rather than looking up in this forum or anywhere else and get the code to do so, i wanted to develop the code on my own as part of a learning experience. All grounded terminals are connected together the hc sr04 ultrasonic sensor board has 4 pins from left to right. And dont forget to flash the code to your microcontroller chip.
The modules includes ultrasonic transmitters, receiver and control circuit. Interface controller, although general instruments original. Im trying to detect obstacles at a specific distance using an ultrasonic sensor which is interfaced with a pic micro controller. Circuit diagram, atmel studio program code and working explanation. Ultrasonic sensor hcsr04 the ultrasonic sensor hcsr04 uses sonar to determine distance to an object. An ultrasonic distance sensor is a sensor that can measure distance from a solid or physical object. Interfacing pic16f877a with hcsr04 ultrasonic sensor ccs c code. Hc sr04 ultrasonic sensor the hc sr04 ultrasonic sensor uses sonar to determine distance to an object like bats or dolphins do. Apr 12, 2018 hc sr04 ultrasonic sensor interfacing with lpc1768 example. Hcsr04 ultrasonic distance sensor is a popular and low cost solution for noncontact distance measurement function. In this instructable we will learn about hcsr04 widely known as ultrasonic sensor, how it works and how to interface with the nodemcu. Ra1 is trigger it uses a 16f877a with hs 12mhz, but in mikroc config is necesary set hs 4mhz.
The next pulse can be transmitted when the echo is faded away. Help interfacing hcsr04 ultrasonic sensor with avr avr. We will be using the hc sr04 ultrasound sensor for distance measurement. Ultrasonic rangefinder hcsr04 interfacing with atmega8. For the past few weeks i have been working on some code where i can interface an ultrasonic sensor hc sr04 with an atmega1284p. This article introduce you to the popular and low cost hc sr04 ultrasonic distance measurement module and also guide you through the development of c program to interface it with pic16f877a microcontroller. Interfacing hcsr04 ultrasonic distance sensor with lpc2148. Interfacing pic16f877a with hcsr04 ultrasonic sensor. Nov 11, 2017 hcsr04 ultrasonic sensor wires to connect it all together. Obstacle detection using an ultrasonic sensor and a pic.
At the end of this article you will learn how this sensor works and how to. Ive been asked to help to write a simple pic code to interface with the ultrasonic sensor. Sep 26, 2017 the hc sr04 is an ultrasonic sensor which can be used to measure distance anywhere between 2cm to 450cm theoretically. Hi everyone, i hope every one of you are fine and doing well.
Hcsr04 ultrasonic sensor with pic16f877a proton basic. Hcsr04 ultrasonic sensor is one of the best solution for noncontact distance measurement functions and can be easily interfaced with pic microcontroller. First we have to supply the sensor trigger pin with a pulse of 10s and the sensor will automatically send 8 cycles burst of ultrasound at 40 khz and raise its echo pin. Interfacing hcsr04 ultrasonic distance sensor with pic microcontroller. Hcsr04 ultrasonic distance sensor is a popular and low cost solution for non contact distance measurement function. Interfacing hcsr04 ultrasonic distance sensor with lpc1768. Ultrasonic ranging module hc sr04 provides 2cm 400cm noncontact measurement function, the ranging accuracy can reach to 3mm. The distance measured in cm is shown on a 16x2 alphanumeric lcd module. Sensors application using pic16f877a microcontroller science. As shown above the hc sr04 ultrasonic us sensor is a 4 pin module, whose pin names are vcc, trigger, echo and ground respectively. In this tutorial we will be learning how to interface ultrasonic sensor hcsr04 with pic microcontroller. It sends out highfrequency sound waves and then waits to listen back for these sound waves.118 84 1327 941 554 1635 1289 1050 476 883 1225 708 778 1196 410 577 355 1075 536 1408 838 1279 1548 313 1056 598 1397 196 1559 1384 1334 710 771 914 1015 1047 1289 1055 325 674 1257 200 542 24 1183