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Hello Arduinians... Ever thought of detecting motion via your Arduino.... if yes, then this one's for you. In this tutorial, We're interfacing PIR sensor today with Arduino. Let's gets started! Block Diagram Block Diagram Components Required For This Tutorials 1 * Arduino Board 1 * PIR Motion Sensor(you can buy from here )   Breadboard Jumper wires Battery What is PIR motion sensor & how it works? Basically, a PIR stands for "Passive Infrared Sensor". The sensor works on the principle of infrared waves' detection those are being emitted by human bodies. They are undetectable to us but can be discovered by the devices designed for such special purposes. I'm going to go just a little deep, enough to make you understand the internal operation. When a body moves in front of a PIR sensor, the temperature of that place changes where the body has moved. If the body makes a further movement, the composition of infrared waves being received by the PIR from th...

Arduino is very popular and easy to use. With Arduino, we can do lot's of projects and experiment. So today we add one more projects in our Arduino project list. In this article, we are going to make a digital voltmeter.using an Arduino board. In this project, we measure the input voltage range between 0 to 50V by using the voltage divider. It is very simple to use Arduino as a voltmeter. Arduino UNO has  5 analog pin to read the input analog value. If we have an idea about reference voltage then we can easily measure the input voltage. Here we will use 5V as a reference voltage. Block Diagram Block Diagram of DC Voltmeter Component Required  1 * Arduino Board(In this article we use Arduino UNO) 1 * LCD Module(Here we will use 16 * 2 LCD Module) 1 * 100K Resistor  1* 10K Resistor 1 * 5K Potentiometer Some jumper wires Breadboard  Circuit Diagram Circuit diagram of this projects is very simple and easy to understand. Here we use a 16 * 2 LCD module to display the...

We are living in the world where everything goes to be automatic from your washing machine to your ceiling fan. Street lights are one of those examples of the automatic world. Automatic street light are those light which needs no manual operation to gets turn ON and turn OFF. Did you ever try to make such kind of street lights that gets turn ON and turns OFF automatically? In this article, we are going to make automatic street light using LDR and 555 timer IC. List of Components   555 Timer IC LDR LED Potentiometer Resistor 1* 1k ohm  Resistor 1* 220 ohm 9V Battery Printed Circuit Board(PCB) Or BreadBoard  Circuit Diagram A very simple circuit diagram of automatic street light is given below.  Automatic Street Light Controller Circuit Principle and Working of Automatic Street Light Controller 555 Timer IC is the main part of the circuit that works as a comparator. All the working of this circuit depends on the working of the 555 timers Ic.To know more about 555 time...

We all know about the ultrasonic sensor and also wanted to play with it, but don't know how ultrasonic sensor works. So In this article, we will see  how to use an ultrasonic sensor with your projects. The ultrasonic sensor is very popular among arduino hobbyist and there are so many projects which you will be able to do at the end of this article. Description of HC-SR04 Ultrasonic Sensor Ultrasonic Senso r can measure the distance from 1" to 13 feet( 1 cm to up to 4metre) with accuracy up to 3mm. A hc-sr04 ultrasonic sensor has 4 pin GND, VCC, Echo and Trigger Pin. Trig pin generate an ultrasound by setting trig pin on the high state of 10 microseconds. Echo pin produce an output in a microsecond when ultrasound returns back from the object to echo pin. We can calculate the distance by using simple formula Speed=(Distance/Time). The speed of the sound is 340m/s and thus by calculating ultrasound travel time we can calculate the object distance from the ultrasonic sensor. Requ...

In this article, we will find out how to interface a matrix keypad with arduino in very easy technique. During this article, we are using a 4*3 matrix keypad. Keypads are a very important component in the embedded system which are used in various mini or major comes and the commercial product like telephone, electronic locker, and alternative automation product. At the end of the article you may be ready to interface a matrix keypad together with your arduino and after you press a key, its shows up into the serial monitor. What is 4*3 Matrix Keypad One of the most frequently asked question among the students or hobbyist are when we use 4*3 or 4*4 matrix keypad and what is the difference between them. Therefore, we have only one answer what's your requirement within the project. The logic behind operating of each keypad are same. The 4*3 keypad is simple keypad having 4 rows and 3 column, therefore, total 12 keys as shown in the image. There are so many distributors wherever you wi...

A Relay is an electromagnetically operated switch. Relays are used to control a circuit. Many relays consist a coil, a yoke, and an armature. When a current is passed through the coil, a magnetic field is induced in the coil which moves the armature and relay start its switching function. A normal relay has NO(normally open), NC(normally connected), COM and coil pin within it. A Simple one channel relay is shown in below image Relay Required Components For designing a relay driver circuit you will need following components  Relay 1N4007 Diode BC547 Silicon NPN transistor 10K Resistor  Circuit Diagram A simple relay driver circuit is shown in below image. Here we use an NPN BC547 transistor to drive the relay.Base current ought to be a lot of enough to turn on a transistor. A diode 1N4007 use among the circuit to protect the transistor from damage due to back emf. When relay is in off state, COM pin of  Relay Driver Circuit  a relay is connected to NC(normally connect...

Hello, Friends hope all of you playing with your arduino and currently need to try to do another cool projects on arduino. Therefore, this tutorial is for you. During this tutorial, we interface LDR(Light dependent Resister) with the arduino board. It is very simple tutorials for arduino students, hobbyist, and beginners. Before going more we must find out how LDR is dependent on Light. What is LDR  LDR(Light dependent Resister) or a photoresistor is a light dependent variable resistor that resistance decreases with the increase in the intensity of light. This gives an analog value so that it is connected to an analog pin of arduino board. A simple LDR is shown within the image and to buy an LDR click on the below image Circuit Diagram A simple circuit diagram is shown in the image. We won't use LDR directly within the circuit in order that a potential divider circuit is used with a 10K resistor. In this circuit one pin of LDR is connected to Analog pin A0 of arduino UNO and ...

We all are aware of custom characters used in the various display module.Heart, various style of smileys, arrow are the foremost usually used custom characters. Thus, during this tutorial, we are going to learn how to display custom characters in LCD using arduino UNO board. This project is done by using of arduino UNO board and 16*2 LCD module. Custom Character Display It is assumed that reader knows  how to interface LCD with arduino  and  how to install arduino software .We can generate a completely different style of the custom character using the below pixel array shown in the image.  Pixel array the custom character shown below that is used in our program to generate the smile type character:          {                 0b00000,                 0b00000,                 0b01010,             ...

In many small or large industry, you may have seen such a lot of fan that speed is control according to the temperature of the place. Thus, during this article, we have presented a demo of that application. It's assumed that you have an idea of  how to read reading from the temperature sensor IC . In industry temperature range will be more than 100  o C   but here we will work on the very low range. Block diagram of Temperature control FAN Block Diagram Required Components  Arduino UNO board (buy from here arduino ) Temperature sensor IC LM35( buy from here LM35 sensor ) DC Fan resistor 1* 1K 16*2 LCD Display Power supply   Diode(1N4007)  Circuit Diagram  In this application, we use an arduino board to control the speed of the fan and a 16*2 LCD display to display the status of the fan. Here we use a diode in parallel with FAN to prevent it from the damage and a 9V battery to provide power to the fan. Circuit Diagram Code Again like our previous proj...

Do you ever tried to control your robot using your PC or laptop? Controlling a robot using PC or laptop is often being a fun for the student or hobbyist. Thus during this article you will be tend to learn how to control your robot using your PC or laptop. Here it is assumed that you know  How To Send Serial Data From Arduino To Laptop or PC  and  How To Receive and Send Serial Data Using Arduino Board . Thus lets begin to making this awesome DIY hack today with us. Replica of robot Component Required: Arduino UNO Board PC/Laptop L293D Motor Driver IC 2 Motor Serial Bluetooth Module 2 wheels Chassis Castor wheel Software (serial port software on your PC/laptop)  Click here to see more projects on Arduino Block Diagram: Block Diagram Setup Connection For Robot: Circuit Diagram Here we use a L293D motor driver IC which is used for the controlling the rotation of the two motor connected to robot. Pin no 2,7,10,15 of L293D motor driver IC is connected to the pin no 9...

Proteus is an Electronics design and simulation software developed by the Labcenter Electronics. Engineering student or hobbyist will design and check their project on Proteus software before assembling it on hardware. To install  Proteus software on windows follow the below instruction: Download the Proteus software setup from here  and double click on the setup.exe file as shown in below image Setup After few minute step can complete here you'll install the  license key  that ought to be valid for the Proteus software. Here you choose "use a locally installed license key". Currently, one in all two window is open. It'll be either window with already installed key or no key installed. If you get a window with an already installed key then simply click on the "next" and at the last click on the end to finish the installation. How To Interface LCD With Arduino UNO Currently, if you get a window with no key installed then initial download the license key...