The Engineering Projects

Smart Blind Stick using Arduino in Proteus

Buy This Project Hello everyone, I hope you all are doing great. Today, I am going to share a new Project which is Smart Blind Stick using Arduino in Proteus ISIS. I have designed its complete Simulation which I am gonna share today.  We have designed this Proteus simulation off Smart Blind Stick after quite a lot of effort that's why its not free. We have placed a small amount on it and you can buy it from our shop via PayPal. You need to click on above button in order to buy this project's code and Simulation. If you have any problem in understanding this project, then you can ask in comments and I will try my best to resolve your issues. Smart Blind Stick project is designed quite a lot in engineering universities. That's why, I thought of sharing this simulation. Although its a Proteus Simulation but if you wanna design it on hardware then this code will work perfectly fine as I have tested it on hardware. If you got into any trouble in running this simulation then you can also send me message via Contact Form and I will surely help you out. So, let's get started with Smart Blind Stick using Arduino in Proteus ISIS:

Smart Blind Stick using Arduino in Proteus

• In this Smart Blind Stick, I have used:
  • Ultrasonic Sensors. ( You should download Ultrasonic Sensor Library for Proteus. )
  • PIR Sensor . ( You should download PIR Sensor Library for Proteus. )
  • Arduino Pro Mini. ( You should download Arduino Library for Proteus. )
  • Buzzer. ( You should read Simulation of Buzzer in Proteus. )
  • LCD 20 x 4. ( You should download LCD Library for Proteus. )
• Three Ultrasonic Sensors are placed in Front, Left and Right Directions.
• Ultrasonic Sensors on blind stick are used for detection of any hurdle or intruder in the passage of blind person.
• Once it detects the hurdle, then the buzzer will go ON and alert the blind person.
• Similarly I have also placed a PIR sensor which is detecting the presence of any other person, so when you place it on the blind stick then make sure that it is placed on front side so that it won't detect the blind person.
• Although blind persons can't read the values on LCd but still I have placed an LCD just to display all the values.
• I have used Arduino Pro Mini because its smaller in size and can easily be placed on a blind
• Here's a screenshot of Smart Blind Stick using Arduino in Proteus ISIS:

• Because the simulation was big in size that's why these sensors are looking so small, you need to zoom in to get all the details.
• It's got lengthy because I have designed a stick in Proteus and I have placed all the sensors on that stick except PIR sensor because that was quite big.
• It's looking quite cool because of the stick simulation. :)
• Here's a screen shot of zoomed in Ultrasonic Sensors:

• Now when you buy this Project, then you will get all these Library files in the folder along with complete Arduino code and Proteus Simulation.
• I have also designed a video which is given at the end of this tutorial, if you wanna buy this project, then must watch that video as I have shown the working of this Proteus Simulation in that video.
• Now, Get the Hex File from Arduino Softwre and upload it in the Arduino Pro Mini.
• Once you are done, run your Proteus Simulation of Smart Blind Stick and if everything goes fine then you will get the first screen as shown in below figure:

• This first screen is displaying the name of Project as well as our website in LCD.
• After 5 sec, it will change and will start displaying sensors' values, as shown in below figure:

• You can see in above figure that LCD is displaying values of all ultrasonic sensors, along with the Motion detection.
• Because PIR Sensor's TestPin is HIGH that's why its showing that Motion Detected and at this time the buzzer is also ON, which you can't hear in the image. :P
• Here's a detailed video, in which I have shown the functionality of this Smart Blind Stick Proteus Simulation:

If you want to buy this project then, you must first watch this video, so that you got the idea of what you are buying. That's all for today. I hope you have enjoyed this Smart Blind Stick. Till next tutorial, take care and have fun !!! :)

L298 Motor Driver Library for Proteus

Hello everyone, I hope you all are doing great. Today, I am going to share a new L298 Motor Driver Library for Proteus. It has never been designed before and we are proudly presenting it for the first time. I hope you guys are gonna like it. You should also have a look at DC Motor Speed Control using L298 in which I have used the same module in hardware design. But today we are gonna see it in action in Proteus Simulation and its quite exciting for me as well. :) If you don't know much about L298 then you should also have a look at Introduction to L298, in which I have discussed the basics of L298 module, it will be quite informative for you. If you got into any trouble regarding this L298 Motor Driver Library for Proteus, then you can ask in comments and I will try my best to resolve your issues. So, let's get started with L298 Motor Driver Library for Proteus:

L298 Motor Driver Library for Proteus

• First of all, download the L298 Motor Driver Library for Proteus by clicking the below button:

L298 Motor Driver Library for Proteus

• Once you downloaded the rar file, open it and extract the files.
• You will get two files in it, named as:
  • L298MotorDriverTEP.LIB
  • L298MotorDriverTEP.IDX
• Place these two files in the Library folder of your Proteus Software.

Note:

• If you are using Proteus 7 Professional, then the library folder link will be something like this: C:Program Files (x86)Labcenter ElectronicsProteus 7 ProfessionalLIBRARY
• If you are using Proteus 8 Professional, then the library folder link will be something like this: C:ProgramDataLabcenter ElectronicsProteus 8 ProfessionalDataLIBRARY

• Now restart your Proteus software and search for L298 Motor Driver in the search box as shown in below figure:

• Place this L298 Motor Driver in your Proteus work space.
• If everything goes fine then you will get something as shown in below figure:

• You can see its looking quite awesome in above figure.
• Using this L298 Motor Driver, you can easily control two DC Motors and it works exactly the same as our hardware L298 module.
• It has two output pins on left and 2 on the right side, while the input pins are shown at the right bottom corner.
• Now, let's design a small circuit and check out its controlling operation.

L298 Motor Driver Simulation in Proteus

• Now, I am gonna design a small circuit which will simulate this L298 Motor Driver and we will driver two DC motors with it.
• You can download this L298 Motor Driver Simulation in Proteus by clicking the below button:

Download Proteus Simulation for L298

• So, first of all design a simple circuit as shown in below figure:

• I have attached one DC Motor at OUT1 and OUT2 while second DC Motor at OUT3 and OUT4.
• I have attached Logic States at all of four inputs and you can also provide input using any microcontroller like Arduino or PIC Microcontroller.
• Now run your simulation and if everything goes fine then you will get results as shown in below figure:

• You can also have a look at the working of this L298 Motor Driver in below video:

That's all about L298 Motor Driver in Proteus and I hope you won't get any problem in simulating it in Proteus. If you still got any problem then as k in comments and I will help you out and do give your suggestions as well. I will also run Stepper Motor using this L298 Motor Driver.

Ultrasonic Sensor Arduino Interfacing

Hello everyone! I hope you all will be absolutely fine and having fun. Today, I would like to provide a complete discussion on Ultrasonic Sensor Arduino Interfacing. I would like to tell you some detail about ultrasonic sensor, after that we will move towards ultrasonic sensor Arduino interfacing. Ultrasonic sensor is also known as SONAR sensor. SONAR basically stands for Sound Navigation and Ranging. Ultrasonic is mostly used for the distance measurements. It can also be used for measuring the depth of the sea. I have already shared Ultrasonic Sensor Library for Proteus. Ultrasonic/SONAR sensor is an electronic device used to estimate the distance of an object by continuously transmitting sound waves at a particular frequency and listens to that transmitted sound wave to bounce back. It measures the time between the transmission and receiving of that sound wave, which is actually equal to the distance of an object from the SONAR. An optical sensor has both a transmitter to transmit and a receiver to receive the waves. But in comparison to that optical sensor ultrasonic sensor has only a single element for both transmitting and receiving ultrasonic/sound waves. I have also shared Ultrasonic Sensor Simulation in Proteus. Ultrasonic sensor has four pins whose detail will be given later in this tutorial. This is another sensor similar to the ultrasonic sensor i.e. PNG sensor. PNG has three pins. Both of these sensors are designed for the estimation of the distance of an object from the sensor. In this tutorial I am going to use ultrasonic sensor. The basic principle of ultrasonic sensor is that, it transmits ultrasonic waves and receives it back after getting reflected back from the surface of the object and measures the time between transmitting and receiving of the ultrasonic wave. The further detail about ultrasonic sensor/SONAR will be given later in this article.

Ultrasonic Sensor Arduino Interfacing

Ultrasonic sensor is also known as SONAR. It is used for measuring the distance between the object and the sensor itself. It transmits ultrasonic waves and receives it back after reflecting from the surface of an object. Then its measures the time during entire process which is equal to the distance between object and the sensor itself. It has four pins and is very easy to use. It is easily available in the market and is available at very low cost. It has a wide range of applications e.g. estimating the sea’s depth and many more. SONAR/ultrasonic sensor along with proper labeling is given in the figure shown below.

1. Ultrasonic Sensor Pins

• Ultrasonic sensor has total four pins, each pin has to perform different task.
• Ultrasonic sensor all pins are listed in the table shown in the figure below.

2. Ultrasonic Sensor Pins Description

• Since each pin has different task to perform, so we must know about the functionality of each pin.
• Ultrasonic sensor pins description is listed in the table given in the figure shown below.

3. Ultrasonic Sensor Pinout

• Pinout diagram provides us the information about all the pins of electronic device.
• Ultrasonic pinout diagram is given in the figure show below.

4. Ultrasonic Sensor Working Principle

• Ultrasonic sensor transmits sound waves.
• These waves are reflected back from the surface of an object.
• Ultrasonic sensors receives the reflected waves.
• Then it measures the time elapsed during the entire process, from transmission to receiving, it is known as round trip time.
• This time is equal to the distance between an object and the sensor itself.
• I have also provide some visual, so that you can easily understand its working principle.
• Ultrasonic sensor principle is shown in the figure given below.

5. Ultrasonic Sensor Arduino Interfacing Wiring Diagram

• I have also shared Interfacing of Ultrasonic Sensor with Arduino in previous tutorial.
• I have discussed a detailed information on Interfacing of Multiple Ultrasonic Sensor With Arduino.
• Ultrasonic sensor Arduino interfacing completely labeled wiring diagram is given in the figure shown below.

6. Ultrasonic Sensor Arduino Interfacing Source Code

• I have provided the complete Arduino code for ultrasonic sensor Arduino interfacing.
• You need to just copy and paste the entire code in your Arduino software.
• After uploading it to Arduino board, you will be able to get the desired results.

// defines arduino pins numbers
const int trigPin = 12;
const int echoPin = 11;
// defines variables
long duration;
int distance;
void setup() 
{
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
Serial.begin(9600); // Starts the serial communication
}
void loop() {
// Clears the trigPin
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echoPin, HIGH);
// Calculating the distance
distance= duration*0.034/2;
// Prints the distance on the Serial Monitor
Serial.print("Distance from the object = ");
Serial.print(distance);
Serial.println(" cm");
delay(1000);
}

• First of all I have defined the pins for Echo and Trig pin.
• Then I changed their mode to input and output as well.
• Then I defined the formula to calculate the distance.
• You can download the wiring diagram and complete Arduino source code here by clicking on the button below.

7. Ultrasonic Sensor Ratings

• From the ratings of a device we can learn about its power, voltage and current requirement.
• Ultrasonic sensor ratings are listed in the figure shown below.

8. Ultrasonic Sensor Dimensions

• The dimensions of ultrasonic sensor are given in the figure shown below.

9. Ultrasonic Sensor Features & Formula to Measure Distance

• Ultrasonic sensor features are listed in the table given in the figure shown below.

• The formula to calculate the distance between an object and the sensor itself is given below.

Distance = (Speed of sound × Time)/2

In the tutorial Ultrasonic Sensor Arduino Interfacing, we have learnt about the pins and working principle of ultrasonic sensor to estimate the distance of an object from the sensor. I hope you enjoyed the tutorial. I have provided all the important details about ultrasonic sensor Arduino interfacing. If you find something missing, please let me know in comments, so that I can update the tutorial correspondingly. I will share further topics in my upcoming tutorials. Till my next post take care and bye :)

2 Relay Module Interfacing with Arduino

Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to provide a detailed discussion on 2 Relay Module Interfacing with Arduino. First of all I would like to explain you that what is relay and how to use it and then we will move forward towards 2 relay module interfacing with Arduino. I have already controlled relay with 555 timers. 2 relay module consists of two relays. Relay is basically an electronic device or a switch which is used to open and close the circuits electronically. A relay controls an electric circuit by opening and closing contacts in another circuit. When the relay contact is normally open (NO), there will be an open connection when the relay is not energized. When the relay contact is normally closed, there will be a closed connection even when the relay is not energized. We can use relays to control the smaller currents in different electronic circuits. 2 relay module has two relays. One relay can control two AC/DC device simultaneously. That means 2 relay module can control four AC/DC devices at a time. 2 relay module is normally used to control the DC motors in different projects e.g. robotics, automation, embedded projects etc. It can control two DC motors simultaneously. Moreover, we can also use it for different applications e.g. to control DC/AC fans, AC/DC lights, AC/DC bulbs and a lot more. The further detail about 2 relay module interfacing with Arduino will be given later in this tutorial.

2 Relay Module Interfacing with Arduino

2 Relay Module is an electronic device consists of two relays as its major components. Relay is a switch which makes or loses the connection between two different circuits. A single relay is capable of controlling two AC/DC devices simultaneously. So, 2 relay module is able to control four AC/DC devices at the same time. Mostly it is used to control the DC motors. It can also be used in different projects e.g embedded projects, robotic, automation, power etc. 2 relay module is shown in the figure given below.

1. Relay Proteus Simulation

• I have also designed relay simulation in Proteus ISIS.
• Relay Proteus ISIS simulation is shown in the figure given below.

2. 2 Relay Module  Components

• A complete list of the components used while designing 2 relay module is shown in the figure given below.

3. 2 Relay Module  Input Pins

• 2 relay module has five (5) input pins in total, each perform different action.
•  All of its pins are provided in the table shown in the figure below.

4. 2 Relay Module  Input Pins Description

• We must know about the functions of each pin.
• 2 relay board/module input pin functions are listed in the table shown in the figure below.

• Both IN1 and IN2 comes from the micro-controller (Arduino UNO in this case).
• IN1 pin controls the 1st relay attached on 2 relay module.
• IN2 pin controls the 2nd relay attached on 2 relay module

5. 2 Relay Module  Output Pins

• 2 relay module has three (3) output pins for each relay.
• Its output pins are given in the table shown in the figure given below.

6. 2 Relay Module  Output Pins Description

• Each output pin of 2 relay module has its own functions.
• 2 relay module pin functions are listed in the table given in the figure shown below.

• NO pin is normally open pin and device attached to this pin will not work if the relay is not energized.
• COM is a common pin i.e. ground pin.
• NC is normally closed pin and device attached to this pin will start working even if the relay is not energized.

7. 2 Relay Module  Compatibility

• 2 relay module is compatible with different micro-controllers.
• Some of those micro-controllers are provided in the table shown in the figure given below.

8. 2 Relay Module  Circuit Diagram

• Circuit diagram of 2 relay module is given in the figure shown below.

9. 2 Relay Module  Interfacing with Arduino Wiring Diagrams

• First you should have a look at Relay Interfacing With Microcontroller using ULN2003A, you will get a better idea about its interfacing with different micro-controllers.
• Wiring diagram for 2 relay module interfacing with Arduino is shown in the figure given below.

10. 2 Relay Module  Interfacing with Arduino Actual Diagrams

• I have provided the complete wiring diagram for 2 relay module interfacing with Arduino.
• Wiring diagram is shown in the figure given below.

11. 2 Relay Module  Interfacing with Arduino Source Code & Description

• If you are new to Arduino software then you must have a look at How to write Arduino code.
• You just need to copy and paste the source code given below in your Arduino software.
• The complete source code for 2 relay module interfacing with Arduino is given below.

int relay1 = 6;
int relay2 = 7;  

void setup() {
  
  pinMode(relay1, OUTPUT); 
  pinMode(relay2, OUTPUT);
}

void loop() {

   digitalWrite(relay1,LOW);
   delay(1000);
 
   digitalWrite(relay1,HIGH); 
   delay(1000);
   
   digitalWrite(relay2,LOW); 
   delay(1000);
   
   digitalWrite(relay2,HIGH); 
   delay(1000);
}

• First of all I have defined relay pins.
• Then I have changed the mode of these pins to output.
• After that I have turned on and off both of the relays with the delay of 1 sec or 1000 msec.
• So, that was the brief description about the source code for 2 relay module interfacing with Arduino.
• You can download the wiring diagram and complete Arduino source code here by clicking on the button below.

12. 2 Relay Module  Features

• The most common features associated with 2 relay module are provided in the table shown in the figure given below.

13. 2 Relay Module  Application

• 2 relay module applications are given in the table shown in the figure below.

In the tutorial 2 Relay Module Interfacing with Arduino, we have learnt about the components used in the design of 2 relay module. We have also learnt about the 2 relay module interfacing with Arduino. I have provided the complete Arduino source code, you can control this module using the same code. I hope you have enjoyed the tutorial. If you have any problem you can ask us in comments. Out team is 24/7 available for you. I will share different informative engineering topics in my upcoming tutorials. So, till my next tutorial, take care and bye :)

Introduction to Pixy Camera

Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to give you an elaboration about Introduction to Pixy Camera. It is basically is an electronic device or sensor having fast vision. It is also known as fast vision sensor most of the time. Using this device we can teach to find objects in a very less time duration. It is an image sensor having a very powerful processor. Pixy is easy to interface with the micro-controllers e.g. Arduino. We can make different programs only to send the desired data from the device to micro-controller. In this way micro-controller can not overwhelm. Pixy camera is able to communicate with the micro-controller in several different ways e.g. serial communication, I2C protocol, digital out, analog out and SPI communication techniques. Using this type of communication between pixy camera and micro-controller we can also perform other tasks when camera is communicating with micro-controller. We can also attach multiple pixy cameras with a single micro-controller. Its normal mean of image detection is through RGB (Red Green Blue) color detection technique. Moreover, it can also detect different images using hue and saturation techniques. Light doesn't effect the image detection of this camera. Its a huge problem while doing image processing techniques. This module has an ability to find hundreds of objects simultaneously and it can remember seven different types of colors. It detects images with a very fast processing speed of 50 frames per second. It is a low cost and highly efficient device available in the market. The further detail about introduction to pixy camera will be given later in this section.

Introduction to Pixy Camera

Pixy camera is a fast vision electronic device. It can capture 50 frames per second. It can communicate with the mirco-controller using different types of communications e.g I2C protocol, SPI and serial communication. Its image detection technique is not effected by the light like all other devices. It cam remember 7 different colors simultaneously. Its a low cost device. It also uses hue & saturation technique for image detection. Pixy-camera is shown in the figure given below.

• Pixy camera has a particular software which is necessary to be installed before using it.
• I have share a complete detailed article on How to Install Pixy Camera Software - PixyMon.

1. Pixy Camera Pins

• It has six pins having assigned with different tasks.
• All the pins are given in the table shown in the figure given below.

2. Pixy Camera Pinout

• Pinout diagram tells us about the complete information of all the pins of any device.
• Pixy-camera pinout diagram is given in the figure shown below.

• If you are new to pixy camera you must have a look at Getting Started with Pixy Camera.
• After doing this the next, you must need to know is Upload Latest Firmware in Pixy Camera.

3. Pixy Camera Technical Specifications

• Technical specifications tell us about the efficiency and different tasks whether they can be performed by it or not.
• Pixy-camera technical specifications are listed in the table shown in the figure given below.

4. Pixy Camera Features

• Any device can become a lot popular only on the basis of its unique features.
• Pixy-camera features are listed in the table given in the figure shown below.

5. Pixy Camera Communication Techniques

• Pixy-camera has an ability to communicate with the micro-controller in different ways.
• Alla the communication mediums are provided in the table shown in the figure below.

6. Pixy Camera Result Visualization

• Its results can be visualized on an application named as Pixy Mon.
• Pixy Mon is an applications that is able to run on computer or MAC.
• Using this application we can visualize, that pixy-camera sees, in the form of either raw video or processed video.
• While using pixy camera, you must know about How to Train Pixy Camera with Computer.
• Pixy set the output port and manage colors.
• USB cable maintains communication between pixy mon and pixy-camera.

7. Pixy Camera Problems

• Each electronic device has its pros and cons, similarly pixy-camera has also some issues with it.
• The two major problems associated with the pixy-camera are listed in the table shown in the figure given below.

8. Pixy Camera Applications

• Pixy-camera has several different real life applications.
• Some of the major applications are provided in the table shown in the figure below.

  The tutorial Introduction to Pixy Camera has provided the detailed discussion on the basics of this module. I hope this tutorial is proved to be an informative for you and you will enjoy this tutorial. You can ask us if you have any problem. I will try me best to help out you. I will share different informative topics in my upcoming tutorials. Till my upcoming tutorial, taker care and bye :)

PIR Sensor Arduino Interfacing

Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to provide the detailed discussion on PIR Sensor Arduino Interfacing. PIR basically stands for Passive Infrared Sensor. Basically PIR is an electronic equipment which is often used to measure the infrared light radiating from the different objects in their field of view. It detects the infrared energy released from animals as well as from human beings, when this energy is higher than the certain threshold level PIR sensor shows an indication correspondingly. The energy detected by PIR sensor is usually in the form of heat i.e. emitted by humans as well as from animals. We can also test and verify our results in Proteus using PIR sensor. I have already shared PIR Sensor Library for Proteus. PIR sensor is most of the time used for sensing the motion of the different objects. It can sense the different objects up to 10 meters. It has three different pins. Each pin is assigned with the different task to be performed when the sensor is in working condition. PIR sensor has several different features like wide voltage supply ranges, automated induction, photosensitive control, low micro-power consumption, high output signal and many more. PIR (Passive Infra Red) sensor is most of the time used in security systems. Moreover, it can be used in OEM applications, automatic illuminating devices, building detection, building automation, alarm & security systems and at a lot more places in real life. The further detail about PIR Sensor Arduino Interfacing will be given later in this tutorial.

PIR Sensor Arduino Interfacing

PIR sensor stands for Passive Infra Red sensors. As it is clear from its name that PIR is an electronic device or sensor used to measure the infrared energy emitted by animals and human beings. This energy is emitted in the form of heat. When this energy is above the certain level, there is algorithm to show an an indication that the desired level has be reached. This tutorial is based on PIR interfacing with Arduino. PIR sensor is shown in the figure below along all of its pin names.

1. PIR Sensor Pins

• PIR sensor has three pins voltage, output and ground respectively.
• All of the pins are provided in the table shown in the figure given below.

2. PIR Sensor Pins Description

• Each pin has different task to perform while the sensor is in working condition.
• PIR sensor pin descriptions are listed in the table shown in the figure below.

3. PIR Working Principle

• PIR sensor has two different slot which are sensitive to infrared light/energy.
• When the sensor is in normal condition, both of the slots measure the same amount of infrared energy radiated by walls etc.
• When a warm body e.g animals and human beings crosses its coverage area, they first cross PIR sensors's first slot, which produces positive differential change between two slots.
• When an animal or human being leave from the sensing area, a corresponding negative differential change is produced.
• By detecting these types of changes PIR sensor can detect the motion of different objects which radiates infrared energy.
• I have tried to elaborate the PIR working principle through some visuals shown in the figure given below.

• I have also provided the visuals about how PIR sensor generates an output signal after sensing different objects/
• PIR sensor object sensing is given in the figure shown below.

4. PIR Sensor Schematic Diagram

• To understand the internal structure of any electronic device, we must have a look at its schematic diagram.
• PIR sensor schematic diagram is shown in the figure given below.

5. Apparatus Required

A list of apparatus required for PIR interfacing with Arduino is given below.

• PIR (Passive Infra Red) Sensor
• Arduino (Microcontroller)
• Jumper wires

6. PIR Interfacing with Arduino Wiring Diagram

• I have already shared a brief article on Interfacing PIR sensor with Arduino.
• Now, this is a detailed article about the similar topic.
• I have provided wiring diagram for PIR interfacing with Arduino.
• You can make the similar wiring diagram and can test and verify your results as well.
• PIR Sensor Arduino Interfacing wiring diagram is shown in the figure given below.

7. PIR Sensor Arduino Interfacing Source Code and Description

• If you have never use Arduino software for programming then you should first go through How to Write Arduino Code.
• I have provided the complete source code for PIR interfacing with Arduino.
• You just need to copy and paste the entire code and upload it to your Arduino board and observe the results.
• You can also made the same simulation on Proteus as well and can verify the results.
• In case of Proteus simulation you must need to know about How to get Hex File from Arduino.

int LED = 13;                
int inputPin = 2;               
int PIR_STATE = LOW;             
int VALUE = 0;                   
 
void setup() {
  pinMode(LED, OUTPUT);      
 
  Serial.begin(9600);
}
 
void loop(){
  VALUE = digitalRead(inputPin); 
  if (VALUE == HIGH) {           
    digitalWrite(LED, HIGH); 
    if (PIR_STATE == LOW) {
      // we have just turned on
      Serial.println("Motion has been detected!");
      PIR_STATE = HIGH;
    }
  } else {
    digitalWrite(LED, LOW); 
    if (PIR_STATE == HIGH){
      // we have just turned of
      Serial.println("Motion has been stopped!");
      PIR_STATE = LOW;
    }
  }
}

• I have initialized the LED pin, PIR state pin and the pin and a variable for reading sensor's data.
• Then I have checked whether the detected value from the sensor is above or below the certain level.
• Then I have decide to be print the certain values on Serial Monitor.
• If it is above the certain level a message "Motion has been detected" will be displayed on the serial monitor through Serial Communication.
• If the detected value is below the certain level then the message "Motion has been stopped" will be displayed on the serial monitor in Arduino software.
• So, that was the brief description of the source code designed for PIR interfacing with Arduino.
• You can download the complete wiring diagram along with the complete Arduino source code here by clicking on the button below.

8. PIR Sensor Interfacing with Arduino Actual Circuit Diagram

• I have also provided the actual circuit diagram for PIR interfacing with Arduino.
• Actual circuit diagram is shown in the figure given below.

9. PIR Sensor Ratings

• To know the power, current and voltage requirements of an electronic device can be known through its ratings.
• PIR sensor ratings are listed in the table given in the figure shown below.

10. PIR Sensor Features

• A device can be popular on the basis of its amazing and unique features, which make it different from other devices.
• PIR sensor some of the main features are listed in the table given in the figure shown below.

11. PIR Sensor Applications

• PIR sensor has several different real applications.
• Some of common applications associated with PIR sensor are provided in the table shown in the figure given below.

• I have provided a circuit designed for security alarm system, which is its most common application.
• The complete circuit design for security alarm system is given in the figure shown below.

• PIR sensor's another application is making a timer circuit using PIR.
• I have provided timer circuit using PIR sensor, shown in the figure given below.

• Another most common application of PIR sensor is the motion detection.
• Motion detection circuit diagram using PIR sensor is shown in the figure given below.

12. PIR Sensor Advantages

• There are a lot of advantages associated with Passive Infrared Sensor, few of them are given below.

13. PIR Sensor Disadvantages

• Infrared sensors also have some disadvantages but they are in a very small as compared to its disadvantage.
• Infrared sensor disadvantage are listed in the table given in the figure shown below.

The tutorial PIR Sensor Arduino Interfacing has provided the detailed discussion about the interfacing of PIR sensor with Arduino. If you feel any problem in PIR Sensor Arduino Interfacing, you can ask me in comments anytime. I will try me level best to entertain you and to solve your problems. I will share further informative topic in my later tutorials. Till then take care and bye :)

DHT11 Arduino Interfacing

Hello everyone! I hope you all will be absolutely fine and having fun. Today, we will have a look at the DHT11 Arduino Interfacing. DHT11 is an embedded sensor, used to measure both temperature and humidity of the surroundings. It is made up of two different parts i.e. capacitive humidity sensor and a thermistor. DHT11 is a slow sensor but is quite efficient for the applications where we need to do some basic analog data exchange. There is a small chip inside this sensor which performs the function of analog to digital to analog conversion and gives the results for temperature as well as for humidity in digital form. This digital signal can be read easily through any micro-controller.

LM335 is another temperature sensor and to understand today's post more properly, you should also go through Introduction to LM335. DHT11 is a low cost sensor and is easily available in the market now a days. This property makes it more popular among the similar type of sensors. It provide precise results with the higher efficiency. It has a small size and low power consumption. It can transmit the signal up to 20 meters. It has four pins whose detail will be explained later. DHT11 has a lot of features including low cost, long term stability, fast response time, excellent quality, long distance signal transmission and many more. In real life DHT11 can be used at several different places e.g. home appliances, weather stations, consumer goods etc. the further detail about DHT11 Arduino Interfacing will be given later in this tutorial.

• I have shared the Interfacing of LM35 with Arduino in Proteus ISIS in my previous tutorial.
• I have also shared a complete detailed article about How to use 18B20 in Proteus ISIS.
• In my previous tutorial, I have shared Interfacing of LM35 with PIC Microcontroller, so you should first need to go through this article.
• I have also written detailed tutorial on Interfacing of Temperature Sensor 18B20 with Arduino, so you should have a look at this article.
• You can also design a complete project on interfacing of more than one temperature sensors by taking help from Interfacing of Multiple DS18B20 Arduino.

Where To Buy?
No.	Components	Distributor	Link To Buy
1	DHT11	Amazon	Buy Now
2	Arduino Uno	Amazon	Buy Now

What is DHT11 Sensor?

• DHT11 is an electronic sensor, consists of 4 pins and is used to measure the temperature and humidity of the surroundings.
• DHT Pinout is as follows:
  1. Pin#1: Vcc (+5V)
  2. Pin#2: Out (digital)
  3. Pin#3: NC (Not Connected)
  4. Pin#4: GND (Ground)
• It has both a capacitive humidity sensor and a thermistor embedded in it.
• It is a low-cost sensor but provides precise results and it gives value once every 2 seconds.
• DHT11 measures the relative humidity of the surrounding.
• It is used in home appliances, weather stations, medical humidity control, data loggers, HVAC and at several security places.
• DHT11 along with its pinout is shown in the figure given below.

DHT11 Pinout

• Before using any electronic device we must know about the functions of its all pins.
• DHT Pinout is as follows:
  1. Pin#1: Vcc: We need to provide +5V to this pin.
  2. Pin#2: Out: Output Pin for reading DHT11 data.
  3. Pin#3: NC: It's an open pin and is not connected to anything(For future use).
  4. Pin#4: GND: Need to provide ground to this pin.
• DHT11 pin description is provided in the below table:

DHT11 Working Principle

• In order to measure temperature, DHT11 uses a thermistor also known as NTC (Negative Temperature Coefficient) temperature sensor.
• A thermistor is simply a variable resistor, which changes its resistance with respect to the temperature.
• A thermistor is made up of sintering of semiconductors in order to provide a large change in its resistance with the small changes in temperature.
• NTC means the resistance decrease with the increase in temperature.
• I have provided a visual display of the relation between temperature and resistance for the DHT11 sensor, shown in the below figure:

• For humidity sensing, DHT11 uses a capacitive humidity sensor.
• The humidity part consists of two electrodes having moisture-holding substrates in between them.
• As the humidity level changes, the resistance between both of the electrodes or conductivity also changes correspondingly.
• This change in conductivity or resistance is estimated and processed by an internal IC.
• I have also provided the visual description of humidity sensing using DHT11 sensor, as given in the figure shown below.

DHT11 Temperature Sensing Characteristics

• The temperature sensing characteristics of the DHT11 sensor are listed in the below table:

DHT11 Humidity Sensing Characteristics

• The humidity sensing characteristics of the DHT11 sensor are listed in the below table:

Note: I have also made some LabVIEW simulations for temperature measuring and conversion, their links are shared below.

• Temperature Sensing in LabVIEW
• Temperature Conversion in LabVIEW

Components Required for DHT11 Arduino Interfacing

As its a simple project, so we are going to need few components, listed below:

• DHT11 Sensor (Temperature and humidity sensor)
• Arduino UNO (Microcontroller Board)
• Jumper wires (Male to Female)

DHT11 Arduino Interfacing

• The connections between Arduino and DHT11 pins are shown in the figure given below.

• The circuit diagram for DHT11 Arduino Interfacing is given in the below figure:

Arduino Code

• If you have not written Arduino code before, you must have a look at How to Write Arduino Code.
• You just need to copy and paste the source code given below into your Arduino software.
• After that just upload the code into your Arduino board to test the results.

#include<dht.h>// DHT11 humidity sensor library
dht DHT; //Creating sensor object
#define DHT11_PIN 2 // Sensor is connected to Arduino pin 2
void setup()
{
  Serial.begin(9600); //setting baud rate
  Serial.println("   =====================================================");
  Serial.println("   ||   Welcome to Temperarue and Humidity Detector   ||");
  Serial.println("   =====================================================");
  Serial.println("");
  }
void loop()//method used to run the code repeatedly
{
  int chk = DHT.read11(DHT11_PIN); //Reading data from sensor
  Serial.print(" Humidity = ");//prints on the serial monitor
  Serial.print(DHT.humidity);// prints obtained humidity on serial port
  Serial.print(" g/m^3");
  Serial.print("    \tTemperature = ");//prints on the serial monitor
  Serial.print(DHT.temperature, 1);//prints obtained temperature on serial port
  Serial.println(" degrees");
  
  delay(2000);//adding the delay of 2 seconds
  }

• First of all, I have defined the library for the DHT11 sensor.
• After that, I have read the humidity and temperature values from DHT11 sensor in digital form.
• Then I have printed the digital values of both humidity and temperature on the Arduino Serial Monitor.
• We can print the values obtained from the sensor on the serial monitor using Serial Communication.
• So that was the brief description about DHT11 interfacing with Arduino.
• You can download DHT11 library, wiring diagram and complete Arduino source code here by clicking on the button below.

Temperature & Humidity Results on Serial Monitor

• I have printed the digital values obtained from DHT11 sensors.
• Both temperature and humidity digital values are given in the figure shown below.

DHT11 Sensor Interfacing with Arduino Circuit Diagram

• I have provided an actual circuit diagram for DHT11 sensor interfacing with Arduino.
• Actual circuit diagram is given in the figure shown below.

DHT11 Features

• The features are such parameters depending upon which a device can flop as well as features that can make a device more popular due to their uniqueness.
• DHT11's major features are provided in the table given in the figure shown below.

DHT11 Applications

• Most of the devices are usually known by their range of applications.
• DHT11 sensor applications are given in the table shown in the figure below.

That is all from today's tutorial. If you have any problem you can ask me in comments any time you want. Till my next tutorial bye :)

Flame Sensor Arduino Interfacing

Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to provide a detailed discussion on Flame Sensor Arduino Interfacing. Flame sensor is an electronic device which is capable of sensing/detection of fire or a high temperature zone. It gives an indication through an LED attached at its top, just after sensing the fire. These type of sensors are usually used for short ranges. They are able to detect the fire up to 3 feet. Flame sensors is the most common device available in the market these days due to its good results and cost efficiency. You should also have a look at Flame Sensor Library for Proteus. Flame sensors are available in the market in two types one having three pins and the other having four pins respectively. Both of the sensors can be easily interfaced to any micro-controller. I am using four pin flame sensor in this tutorial. You will see the complete wiring diagram for interfacing flame sensor with Arduino and the complete Arduino source code and its description as well. Flame sensor can detect fire or any other light sources whose wavelength is in the range of 760nm to 1100nm. This device consists of and IR sensor, an LED for indication, operational amplifier circuit and a potentio-meter. The device is sensitive to flame so when it detects the flame it turns on its LED to show an indication. The sensitivity of the flame sensor can be adjusted according to the requirements. It can be used at different places e.g. in offices, home, institutions, industrial applications.

Flame Sensor Arduino Interfacing

Flame Sensor is an electronic device which is used to sense the fire or any other light having wavelength between 700nm to 1100nm. It consists of either three or four pins both of them are compatible with all micro-controllers. It is sensitive to flame and gives the indication for the presence of the flame. It can be sued in homes, offices, industrial applications. Flame sensor along with its pi names are shown in the figure below.

1. Flame Sensor Pins

• Flame sensor has four pins with different individual function.
• Flame sensor pins are given in the figure shown below.

2. Flame Sensor Pins Description

• Each pin has different tasks to perform.
• Flame sensor pin descriptions are listed in the table shown in the figure given below.

3. Flame Sensor Working Principle

• Flame sensor is very sensitive to flame and other lights.
• Its analog output provides real time output voltage on the thermal resistance.
• When the temperatures reaches at the certain threshold the output high and low signal threshold adjustable via potentio-meter , Its the task of digital output.

4. Flame Sensor Circuit Diagram

• Flame sensor diagram is shown in the figure given below.

5. Apparatus Required for Flame Sensor Interfacing with Arduino

• Arduino UNO (Micro-controller)
• Flame Sensor
• Jumper wires
• Wero board
• Light or another flame sensor

6. Flame Sensor & Arduino Pin Connections

• Connections between Arduino and flame sensor pins are given in the table shown in the figure below.

7. Flame Sensor Arduino Interfacing - Wiring Diagram

• Before hardware interfacing, you can also test your result on Proteus.
• For Proteus simulation, you need to know about How to get Hex File from Arduino.
• I have shared a brief tutorial on Interfacing of Flame Sensor with Arduino in my previous tutorial.
• I have given a completely labeled wiring diagram for Flame Sensor Arduino Interfacing.
• You can test & verify your results by making the same wiring diagram.
• Wiring diagram for Flame Sensor Arduino Interfacing is shown in the figure given below.

8. Flame Sensor Interfacing with Arduino Source Code & Description

• If you haven't written Arduino code ever, you must go through How to Write Arduino Code.
• You just need to copy & to paste the complete source code given below in your Arduino software.
• And just upload the code onto your Arduino board in order to verify the results.

int led_pin = 13 ;// initializing the pin 13 as the led pin

int flame_sensor_pin = 2 ;// initializing pin 7 as the sensor output pin
int flame_pin = HIGH ; // state of sensor

void setup ( )  {

  pinMode ( led_pin , OUTPUT ); // declaring led pin as output pin
  pinMode ( flame_sensor_pin , INPUT ); // declaring sensor pin as input pin for Arduino
  Serial.begin ( 9600 );// setting baud rate at 9600
}

void loop ( ) {
   flame_pin = digitalRead ( flame_sensor_pin ) ;  // reading from the sensor
  if (flame_pin == LOW )  // applying condition
  {
    Serial.println ( " FLAME , FLAME , FLAME " ) ;
    digitalWrite ( led_pin  , HIGH ) ;// if state is high, then turn high the led
  }
  
  else
  {
    Serial.println ( " no flame " ) ;
    digitalWrite ( led_pin , LOW ) ;  // otherwise turn it low
  } 
}

• First of all I have defined the pins for led and the flame sensor.
• The I have printed the digital information on the Serial Monitor obtained from the flame sensor.
• The messages are displayed on the serial monitor via Serial Communication.

9. Flame Sensor Interfacing with Arduino

• The actual circuit diagram for flame sensor interfacing with Arduino.

10. Flame Sensor Applications

• Flame sensor has a lot of different applications.
• Some of them are given below.

The tutorial Flame Sensor Interfacing with Arduino has explained the entire necessary detail about the flame sensor interfacing with Arduino. If you have any kind of problem you can ask me in comments anytime. I will try my level best to solve your issues. I hope you have enjoyed this tutorial. I will share other informative topics in my upcoming tutorials. Till my next tutorial take care and bye :)

Arduino Keypad Interfacing

Hello everyone! I hope you all will be absolutely fine and having fun. Today, we are going to work on Arduino Keypad Interfacing. First of all, I would like to tell you a bit about the keypad. After getting the basic idea about the keypad, we will start our discussion about Arduino Keypad Interfacing.  You should also have a look at Interfacing of Keypad with PIC Microcontroller.

In this tutorial, I am going to use a 4×4 keypad. It has sixteen buttons having four alphabetic characters. Let's have a look at the Arduino Keypad Interfacing:

Where To Buy?
No.	Components	Distributor	Link To Buy
1	Jumper Wires	Amazon	Buy Now
2	Keypad 4x4	Amazon	Buy Now
3	Arduino Uno	Amazon	Buy Now

What is Keypad?

• The keypad consists of multiple buttons, arranged in the form of a matrix(rows & columns) and is used in embedded projects.
• They are cost-efficient and are easily available from online electronic stores.
• Keypads are normally available in a 3×3, 4×3 and 4×4 format.
• Keypad has several applications in real life based projects e.g. mobile phones, calculators, laptops, personal computers, television remote, toy remote, microwave oven, photocopy machine, bank’s ATM machine, tablets and a lot more.
• A simple 4x4 Keypad is shown in the figure given below:

 

Keypad Pinout

• I am using a 4×4 keypad in this tutorial, it has total of eight (8) pins.
• All of these pins are provided in the table shown in the figure below:

• From the above table, we can see that keypad’s first four pins are associated with its four rows.
• The last four pins are assigned to the four columns of the keypad.
• 4×4 Keypad’s pins functions are listed in the table provided in the figure given below.

Components Required for Arduino Keypad Interfacing

• Components required for this project are:
  • Arduino UNO.
  • 4x4 Keypad.
  • Jumper Wires(Male to Female).

Keypad & Arduino Connections

• The connections between the keypad and Arduino are provided in the figure given below:

Circuit Diagram of Keypad Arduino Interfacing

• I have made a circuit diagram for keypad interfacing with Arduino.
• A complete labeled circuit diagram is given in the figure shown below:

• You can make a similar diagram and can easily test & verify your results on the serial monitor.

Arduino Code

• You just need to copy this code into your Arduino software.
• After successfully uploading the code to your Arduino board you will be able to verify the results.

#include <Keypad.h>

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {9, 8, 7, 6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {5, 4, 3, 2}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 

void setup(){
  Serial.begin(9600);
}
  
void loop(){
  char customKey = customKeypad.getKey();
  
  if (customKey){
    Serial.println(customKey);
  }
}

• First of all, I have defined the number of rows and columns of the keypad.
• Then I have declared the complete keypad characters in terms of rows and columns.
• After that, I have defined the row and column pin of the keypad attached to the Arduino pins.
• Then I have simply read the data sent from the keypad and displayed it on the serial monitor.
• You can download a completely labeled wiring diagram and Arduino source code here by clicking on the below button:

Wiring Diagram & Arduino Code

In the tutorial Keypad Interfacing with Arduino, I have explained the basics of the keypad as well as the keypad interfacing with Arduino UNO. I have tried my level best to cover up all the necessary information. If you found something missing, please let me know then. I will update my tutorial correspondingly as soon as possible. I hope you have enjoyed the complete tutorial and I am hoping for your positive response. If you have any problem you can freely ask as in comments anytime. I will share different topics in my upcoming tutorials. Take care and bye till the next tutorial :)

Introduction to ATmega328

Hello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to give you a detailed Introduction to ATmega328. ATmega328 is an Advanced Virtual RISC (AVR) microcontroller. It supports 8-bit data processing. ATmega-328 has 32KB internal flash memory.

ATmega328 has 1KB Electrically Erasable Programmable Read-Only Memory (EEPROM). This property shows if the electric supply supplied to the micro-controller is removed, even then it can store the data and can provide results after providing it with the electric supply. Moreover, ATmega-328 has 2KB Static Random Access Memory (SRAM). Other characteristics will be explained later. ATmega 328 has several different features which make it the most popular device in today's market. These features consist of advanced RISC architecture, good performance, low power consumption, real timer counter having separate oscillator, 6 PWM pins, programmable Serial USART, programming lock for software security, throughput up to 20 MIPS etc. Further details about ATmega 328 will be given later in this section.

Note:

• Here's the link to download the Atmega328 datasheet, although after reading this article you won't need it. :)
• Moreover, I have also given the link to a reliable online source from where you can buy it easily.

Download Atmega328P Datasheet

Where To Buy?
No.	Components	Distributor	Link To Buy
1	Arduino Uno	Amazon	Buy Now

Introduction to ATmega328

• ATmega328 is an 8-bit, 28-Pin AVR Microcontroller, manufactured by Microchip, follows RISC Architecture and has a flash-type program memory of 32KB.
• Atmega328 is the microcontroller, used in basic Arduino boards i.e Arduino UNO, Arduino Pro Mini and Arduino Nano.
• It has an EEPROM memory of 1KB and its SRAM memory is 2KB.
• It has 8 Pins for ADC operations, which all combine to form PortA ( PA0 - PA7 ).
• It also has 3 built-in Timers, two of them are 8 Bit timers while the third one is 16-Bit Timer.
• You must have heard of Arduino UNO, UNO is based on atmega328 Microcontroller. It's UNO's heart. :)
• It operates ranging from 3.3V to 5.5V but normally we use 5V as a standard.
• Its excellent features include cost-efficiency, low power dissipation, programming lock for security purposes, real timer counter with separate oscillator.
• It's normally used in Embedded Systems applications. You should have a look at these Real Life Examples of Embedded Systems, we can design all of them using this Microcontroller.
• The following table shows the complete features of ATmega328:

ATmega328 Features
No. of Pins	28
CPU	RISC 8-Bit AVR
Operating Voltage	1.8 to 5.5 V
Program Memory	32KB
Program Memory Type	Flash
SRAM	2048 Bytes
EEPROM	1024 Bytes
ADC	10-Bit
Number of ADC Channels	8
PWM Pins	6
Comparator	1
Packages (4)	8-pin PDIP 32-lead TQFP 28-pad QFN/MLF 32-pad QFN/MLF
Oscillator	up to 20 MHz
Timer (3)	8-Bit x 2 & 16-Bit x 1
Enhanced Power-on Reset	Yes
Power Up Timer	Yes
I/O Pins	23
Manufacturer	Microchip
SPI	Yes
I2C	Yes
Watchdog Timer	Yes
Brownout detect (BOD)	Yes
Reset	Yes
USI (Universal Serial Interface)	Yes
Minimum Operating Temperature	-40 C to +85 C

ATmega328 Pins

• ATmega-328 is an AVR Microcontroller having twenty-eight (28) pins in total.
• All of the pins in chronological order, are listed in the table shown in the figure given below.

Now let's have a look at the pinout of Atmega328 in detail:

ATmega328 Pinout

• Through the pinout diagram, we can understand the configurations of the pins of any electronic device, so you are working on any Engineering Project then you must first read the components' pinout.
• ATmega328 pinout diagram is shown in the figure given below:

ATmega328 Pins Description

• Functions associated with the pins must be known in order to use the device appropriately.
• ATmega-328 pins are divided into different ports which are given in detail below.
• VCC is a digital voltage supply.
• AVCC is a supply voltage pin for analog to digital converter.
• GND denotes Ground and it has a 0V.
  • Port A consists of the pins from PA0 to PA7. These pins serve as an analog input to analog to digital converters. If analog to digital converter is not used, port A acts as an eight (8) bit bidirectional input/output port.
  • Port B consists of the pins from PB0 to PB7. This port is an 8 bit bidirectional port having an internal pull-up resistor.
  • Port C consists of the pins from PC0 to PC7. The output buffers of port C has symmetrical drive characteristics with source capability as well high sink.
  • Port D consists of the pins from PD0 to PD7. It is also an 8 bit input/output port having an internal pull-up resistor.
• All of the AVR ports are shown in the figure given below.

• AREF is an analog reference pin for analog to digital converter.
• So this was the brief of all the pins in the ATmega328 AVR micro-controller.

ATmega328 Architecture

• An architecture of a device presents information about the particular device.
• ATmega-328 architecture is shown in the figure given below.

ATmega328 Memory

• ATmega 328 has three types of memories, named:
  • Flash Memory: 32KB. It is a Programmable Read-Only Memory (ROM). It is a nonvolatile memory.
  • SRAM: 2KB. Stands for Static Random Access Memory. It is a volatile memory i.e. data will be removed after removing the power supply.
  • EEPROM: 1KB. Stands for Electrically Erasable Programmable Read-Only Memory.
• AVR memory spaces are shown in the figure given below.

ATmega328 Registers

• ATmega-328 has thirty-two (32) General Purpose (GP) registers.
• These all of the registers are part of Static Random Access Memory (SRAM).
• All the registers are given in the figure shown below.

ATmega328 Packages

• The different versions of the same device are denoted by the different packages of that device.
• Each package has different dimensions, in order to differentiate easily.
• ATmega 328 packages are given in the table shown in the figure given below.

ATmega328 Block Diagram

• The Block diagram shows the internal circuitry and the flow of the program of any device.
• ATmega 328 block diagram is shown in the figure given below.

ATmega328 Features

• To perform any task we can select a device on the basis of its features. i.e whether its features match to obtain the desired results or not.
• Some of the main features of an AVR Microcontroller ATmega328 are shown in the table given in the figure below.

ATmega328 and Arduino

• ATmega328 is the microcontroller used in the Arduino UNO board.
• When we upload code in Arduino UNO, it's actually uploaded in the Atmega328 Microcontroller.
• A software driver called bootloader is pre-installed in the flash memory of the Atmega328 microcontroller, which makes it compatible with Arduino IDE.
• AVR Atmega328 attached on Arduino is shown in the figure given below:

ATmega328 and Arduino Pins

• ATmega328 pins are connected to the corresponding pins of Arduino.
• Their connectivity with each other is shown in the pinout diagram shown in the figure given below.

• The encircled section analog pins consist of the Arduino pins which are connected to the corresponding AVR micro-controller ATmega-328 pins.
• I have written both of the pins in front of each other, it will help to understand easily.
• If you want to work on this Arduino board then you must try these Arduino Projects for Beginners, they will help to get your hands on Arduino.

Applications of Atmega328

• A complete package including ATmega 328 and Arduino can be used in several different real-life applications.
• It can be used in Embedded Systems Projects.
• It can also be used in robotics.
• Quad-copter and even small aero-plane can also be designed through it.
• Power monitoring and management systems can also be prepared using this device.
• I have designed this Home Security System using Arduino UNO, you should have a look at it.

How to start working on Atmega328

• If you want to start working on this Microcontroller then I would suggest you do it using Arduino.
• The benefit of using Arduino is that you get to use all of its built-in libraries, which will make the work a lot easier.
• After designing your project on Arduino, then design the basic circuit of Atmega-328 which is quite simple and I have discussed above.
• Now you must be careful while using its Pins, Atmega328 and Arduino Pins are discussed above.
• Another thing to mention here is that before working on hardware, you should first design its Proteus Simulation.
• Download Arduino Library for Proteus and then design your project on it.
• Once you are confirmed that everything's correct then design its circuitry on Wero Board or PCB (Printed Circuit Board) and you have your project ready. :)

The tutorial Introduction to ATmega328 has the presented a detailed discussion on the basic use of ATmega 328. I have completely provided the entire necessary details about the use of an AVR micro-controller. If you have any problems, you can ask us in the comments anytime. Our team is always here to help you guys. I will share other amazing topics with all of you in my upcoming tutorials. So, till then take care :)