Scrolling Text on LED Matrix 8x8 using Arduino
Buy This Simulation
Hello friends, Hope you all are fine and having fun with your lives. In today's post, I am going to show How to display a Scrolling Text on LED Matrix 8x8 using Arduino in Proteus ISIS. We all know about LED Matrix but if you don't know then google it. :P LED Matrix is used to display long messages, the best thing about LED Matrix is you can combine then in serial way and can make it of any size you want. Like in this post I have combined 8 LED matrices and then displayed my message on them. I have given all the details here but as you can see we have done a great effort in designing this simulation so I haven't posted it free but have placed a very small amount of $20 on it and you can buy it quite easily from our shop by clicking the above button.
I have used Proteus software for the simulation purposes and have use Arduino board as a microcontroller. We know that Proteus doesn't support Arduino but we have a library for it. So, first of all, read Arduino library for Proteus so that you can easily add the Arduino board in your Proteus software and then must also read How to get Hex file from Arduino which we will be uploading in our Proteus software. Its quite easy and you will get it don't in the first attempt. Anyways let's get started with Scrolling Text on LED Matrix 8x8 using Arduino in Proteus ISIS.
Hardware Design of LED Matrix 8x8 using Arduino in Proteus ISIS
- First of all let's have a look on the hardware design of LED Matrix 8x8 using Arduino in Proteus ISIS, which is shown in below figure:
- So, if you have a closer look on it by clicking it then you can see I have used 8 LED matrices and have used MAX7219.
- MAX7219 is a shift register which is of real importance here, it takes data serially in and parallel out.
- It is also known by the name serial in parallel out shift register. We send data to it using single pin which is the data pin and this data is edge triggered by the clock pulse.
- So when our clock pulse goes from low to high the data is sent to the shift register.
- We have connected these shift registers in a row as you can see in above figure, the first register is connected to second register via Dout pin.
- So suppose I have connected two shift register then in this case now I am sending data to two shift register and my output will be of total 16 bits.
- So, in this way we can add as many shift registers as we want and here I have added total 8 shift registers so my output is total of 64 bits and I am controlling these 64 bits via single pin of Arduino which is data pin of course.
- Clock Pin and Load Pin are also used here which are used to send the data and then load it in sequence so in short using just 3 pins of Arduino I can control any number of shift register.
- Now, each shift register is controlling each LED Matrix 8x8 and the reason I am using 8 shift registers is because I am using 8 LED Matrix 8x8.
- It's a bit tricky but quite simple. So, now we have complete overview of this shift register and how it works, now let's move on to our simulation.
Scrolling Text on LED Matrix 8x8 using Arduino in Proteus ISIS
- First of all, download the Arduino library for LED Matrix 8x8 by clicking on the below button.
- Now design a complete circuit as shown in below figure in your Proteus ISIS software:
- Next thing you are gonna need is the code for Arduino board which is posted below, so copy it and paste it in your Arduino software:
#include <MD_MAX72xx.h>
#define MAX_DEVICES 8
#define CLK_PIN 13
#define DATA_PIN 11
#define CS_PIN 10
MD_MAX72XX mx = MD_MAX72XX(DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);
#define SCROLL_DELAY 200
#define CHAR_SPACING 1
#define BUF_SIZE 75
char curMessage[BUF_SIZE];
char newMessage[BUF_SIZE];
uint8_t scrollDataSource(uint8_t dev, MD_MAX72XX::transformType_t t)
{
static char *p = curMessage;
static uint8_t state = 0;
static uint8_t curLen, showLen;
static uint8_t cBuf[8];
uint8_t colData;
switch(state)
{
case 0:
showLen = mx.getChar(*p++, sizeof(cBuf)/sizeof(cBuf[0]), cBuf);
curLen = 0;
state++;
if (*p == '\0')
{
p = curMessage;
}
case 1:
colData = cBuf[curLen++];
if (curLen == showLen)
{
showLen = CHAR_SPACING;
curLen = 0;
state = 2;
}
break;
case 2:
colData = 0;
curLen++;
if (curLen == showLen)
state = 0;
break;
default:
state = 0;
}
return(colData);
}
void scrollText(void)
{
static uint32_t prevTime = 0;
if (millis()-prevTime >= SCROLL_DELAY)
{
mx.transform(MD_MAX72XX::TSR);
prevTime = millis();
}
}
void setup()
{
mx.begin();
mx.setShiftDataInCallback(scrollDataSource);
mx.control(MD_MAX72XX::INTENSITY, 10);
strcpy(curMessage, "www.TheEngineeringProjects.com");
newMessage[0] = '\0';
}
void loop()
{
scrollText();
}
- Now after uploading the code in Arduino software, get the Hex file for Arduino and upload it in your Arduino board in Proteus ISIS.
- Now when you upload it to your Arduino board and run your simulation you will get something as shown in below figure:
- Now let's have a look at How it scrolls, I really have to work hard to make the below figure but it looks cool isn't it. :)
- So, that's how our website link is gonna scroll from right to left and you can scroll any kind of text.
- You can buy the complete simulation along with Arduino code and hex file by clicking on below button.
Buy this Proteus Simulation
That's all for today. I hope you guys get some knowledge out of it. Let's meet in the next tutorial, till then take care!!! :)
Interfacing of Keypad with Arduino
Hello friends, hope you all are fine and having fun with your lives. In today's post we will have a look at How to interface keypad with Arduino in Proteus ISIS. Keypad is used almost in every engineering project. If you even look around you will find keypad in many electronic appliances. For example, a simple ATM machine has a keypad on it using which enter our pin code and give commands to the ATM machine. Similarly, calculator also has keypad on it. So, in short there are numerous applications of keypad. You should also read the Real Life examples of Embedded Systems and you will find Keypad in them as well.
Keypad is used where you need to used numerical buttons or you need to use lots of buttons for sending commands so like in some application I need to use 10 buttons so instead of using separate 10 buttons I would prefer to use keypad instead as it will save a lot of time both in hardware as well as programming. So today we will have a detailed look on How keypad works and How we can Interface keypad with Arduino in Proteus ISIS. Proteus also gives keypad component in its database using which we can easily simulate it in Proteus and can save our time. So first simulate it and then design the hardware. After today's post I will also share an Automatic Lock system project using keypad. Anyways let's get started with Interfacing of Arduino with keypad:
How keypad works ??
- Keypad uses matrix system in order to work.
- For example, I am using a keypad which has 12 buttons on it as shown in below figure:
- Now you can see its a 12 button keypad so it has total 3 columns and 4 rows and similarly there are 7 pins to control these 12 buttons.
- So, the simple formula is total number of pins = Number of Rows + Number of Columns.
- Now if we look at the internal circuitry of this 12 button keypad then it will look something as shown in below figure:
- Columns and rows are connected with each other now suppose I press button "1" on the keypad then first row and the first column will get short and I will get to know that button "1" is pressed.
- Same is the case with other buttons, for example I press button "8" then second column and the third row will get short so this code will remain unique for each button.
- In simple words, on each button press different column and row will get short we need to detect which one gets short in order to get the pressed button.
Quite simple, isn't it ?? You should also have a look at these
Arduino Projects for Beginners. So that's how a keypad works, now let's have a look at How to Interface this keypad with Arduino in Proteus ISIS.
Interfacing of Keypad with Arduino in Proteus ISIS
- So, now we are gonna interface this keypad with Arduino in Proteus ISIS which is as always my favorite simulator.
- In Proteus design a circuit as shown in below figure:
- So, we have an Arduino UNO board along with keypad and LCD.
- So I have done the programming in such way that whenever you press any button on the keypad, it will get displayed on the LCD.
Note:
- Now, copy the below code and paste it in your Arduino software and get the hex file from it.
#include <LiquidCrystal.h>
#include <Keypad.h>
const byte ROWS = 4; //four rows
const byte COLS = 3; //three columns
char keys[ROWS][COLS] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'*','0','#'}
};
byte rowPins[ROWS] = {10, 9, 8, 7}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {13, 12, 11}; //connect to the column pinouts of the keypad
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(A0, A1, A2, A3, A4, A5);
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
void setup() {
// set up the LCD's number of columns and rows:
lcd.begin(20, 4);
lcd.setCursor(1,2);
lcd.print("www.TheEngineering");
lcd.setCursor(4,3);
lcd.print("Projects.com");
lcd.setCursor(0,0);
}
void loop() {
char key = keypad.getKey();
if (key) {
lcd.print(key);
}
}
- Now upload the hex file in your Arduino UNO in Proteus ISIS and hit the RUN button.
- If everything goes fine then you will get something as shown in below figure:
- Now, when you press any button on the keypad it will also appear on the LCD as shown in below figure:
That's all for today. In the coming post I am gonna share a small project in which we will design a automatic locking system using this keypad. So stay tuned and have fun. :)
How to Train Pixy Camera with Computer
In today's post we are gonna have a look at How to Train Pixy Camera with Computer. We have yet posted three tutorials in the Pixy Camera series. In the first tutorial, we have seen How to Get Started with Pixy Camera in which we have studied the basics of Pixy Camera. After that that we have seen the Installation of Pixy Camera Software which is named as PixyMon and in the third tutorial we have covered How to Upload the Latest Firmware in Pixy Camera because its always the best strategy to deal with latest tools. So until now we have configured our Pixy Camera in all possible ways now the next thing is to train our Pixy Camera with Computer using PixyMon software.
Let's first discuss How the Pixy Camera works. Pixy Camera has on board NXP microcontroller which is used for image processing so what we need to do is to let our Pixy Camera remember some objects and whenever this object comes in the range of Pixy camera then it gives output to the microcontroller through SPI protocol. We can use any microcontroller like PIC microcontroller or Arduino etc. We will interface it with Arduino in the coming tutorial but in this tutorial we will have a look at How to train Pixy Camera with Computer using PixyMon. So, let's get started with it.
How to Train Pixy Camera with Computer ???
- First of all, connect your Pixy Camera with Computer using the Mini USB to USB converter cable which we have seen in the first tutorial.
- So, plug the mini USB side with your Pixy Camera and plug the USB in your Computer.
- Now, I suppose that you have already upgraded the Pixy Camera software to latest version.
- After pluging in Pixy Camera now open Pixy Camera software named as PixyMon, and you will start receving the live video for Pixy Camera in your PixMon as shown in below figure:
- So I am getting the live video from my Pixy Camera in PixyMon.
- I have placed a globe in front of the Pixy Camera which we are gonna select now.
- So, now what I am gonna do is to recognize this globe to the Pixy Camera.
- In order to do so click Actions and then Set Signature 1 as shown in below figure:
- Now when you click the Set Signature 1 then video will go static like it stopped and now you need to select a region which you want Pixy Camera to remember as shown in below figure:
- As you have seen in above figure, I have selected the blue region of globe and now this color is saved in Pixy Camera.
- After selecting this region, the video will again start but now whenever this blue color of globe comes in focus of Pixy Camera, it will detect this color as shown in below figure:
- Now you can see it has detected the blue region of globe completely and above it is mentioned s = 1 which means the signature is 1, now suppose you want to save any other color then you can save it in signature 2 or 3.
- But there's some problem in the image that we are also detecting small blue color in other parts of image as well and you can see at the left below corner it also mentioning s = 1.
- So, what we need to do is to refine our parameter so that it only detect the blue globe and ignore the other small objects.
- In order to do so, you have to click File and then Configure and a new Window will pop up which will have the Pixy Parameter range for all the signatures as shown in below figure:
- Now you can see in the above figure the range for Signature 1 is 2.02400 and we have many small blue blocks in the figure, so now let's reduce this range and check its effect on the video.
- Now you can see in above figure that our region got quite clear and now its detecting just the globe and all the other small detected regions are now gone.
So, that's how you train Pixy Camera with Computer using PixyMon. You can set other colors as well in other signatures. That's all for today. In the coming tutorial, we will see How to interface Pixy Camera with Arduino in which we will automatically detecting this blue region with Arduino and will be doing our task further. So, stay tuned and have fun. :)
Upload Latest Firmware in Pixy Camera
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Hello friends, hope you are fine and having fun with your lives. Till now we have seen two tutorials on Pixy Camera module, in the first tutorial we have seen How to Get started with Pixy Camera and after that we have seen How to Install Pixy Camera software which is named as PixyMon. So, now I hope that you have installed the Pixy camera software and have the Pixy Camera module in hand along with USB to Mini USB cable. Because in this tutorial we are gonna plug our Pixy Camera module with moduter and will upload the latest firmware in our Pixy Camera Module, which isn't much difficult and would be a piece of cake if you followed all the instructions carefully.
Pixy Camera comes with some old firmware which is uploaded in it at the time of its manufacturing. But with the passage of tme, the firmware keeps on upgrading and hence in order to make the Pixy Camera module compatible with new software, we have to upgrade the Pixy Camera firmware as well, which we are gonna do in this post.We haven't yet connected our Pixy Camera module with computer so when we plug it with our computer for the first time, it will first install the driver for the usb of pixy Camera board and then we will be able to upload our latest firmware in it. So, before uploading firmware in Pixy Camera first let's have a look at How to install the driver for Pixy Camera module.
How to Install Driver for Pixy Camera ???
- Plug your USB cable in Pixy Camera from USB mini side and plug the USB side into your computer.
- Now when you plug your Pixy camera for the first time, a small pop up will open up in the task bar as shown in below figure:
- And you don't need to do anything and it will get installed automatically. I have tested it on Windows 8 and it works like magic, no problem at all.
- Now once you installed the driver for Pixy Camera, unplug your pixy Camera USB and now we will see how to upload latest firmware in Pixy Camera.
Upload Latest Firmware in Pixy Camera
- So, now I hope you have unplugged your Pixy Camera USB from computer.
- Now download the latest firmware of Pixy Camera by clicking the below button.
- At the time of writing this post, the latest firmware available was 2.0.17 but you can download the latest firmware by clicking here.
- Now I hope you have downloaded the latest firmware for pixy Camera, so now open your PixyMon software and first time it will look something as shown in below figure:
- Now press the white button on your Pixy Camera and plug the USB in your computer while keep pressing the button.
- Once the USB plugged in and USB got detected, then release the button and you will get something like this in your PixyMon.
- As shown in above figure, our Pixy Camera got detected and because we pressed the button so that's why it went in programming state.
- Soon after this a pop up will open up as shown in below figure:
- Now Browse to your downloaded firmware, which in my case is pixy_firmware-2.0.17-general.hex , so I selected this one and press Open.
- It will automatically install the firmware and will restart the Pixy Camera and you will get something like this in your PixyMon.
- That's all, now you will start getting your video from Pixy Camera and you can see in the output pane that it installed the firmware first and then for reset and now ready to use.
Now we have uploaded the Latest Firmware in our Pixy Camera and have also plugged it with our computer and got it working with PixyMon. In the next tutorial, we will see How to train our Pixy Camera using this PixyMon. I am quite tired now so I don't think I am gonna post the next tutorial today, hopefully will post it tomorrow. So, till then take care :))
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How to Train Pixy Camera with PixyMon >>
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How to Install Pixy Camera Software - PixyMon
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In the previous tutorial, we have seen how to Get Started with Pixy Camera, which was quite a basic tutorial and we have covered just the basic cables required to set up pixy camera. Now along with cables we are also gonna need software for training our Pixy Camera. So in this tutorial we are gonna see how to install Pixy Camera Software which is named as PixyMon. As I explained earlier in previous post that first of all, we need to connect our Pixy Camera with Computer or laptop and then using its software PixyMon we need to train our Pixy Camera so that it can recognize objects present in front of it.
PixyMon is quite a simple software and quite easy to use. In this post, we are not gonna check How to use PixyMon software (which is the topic for net tutorial) but we are gonna see How to install pixy Camera software successfully without any errors. So now I hope that you have bought the Pixy Camera and have also bought the USB to mini USB cable because we are gonna need to it in order to connect our Pixy Camera with computer and make it work with PixyMon software.
I could have covered the whole tutorial in a single post but then its gonna be real messy because we need to cover quite a lot of things that's why I thought to divide it in parts so that we cover each and every thing in detail and even a begineer can easily follow these tutorials and could work on PixyMon Camera Module. After checking the installation of PixyMon software, in the next tutorial we will have a look at How to upgrade the drivers for Pixy Camera Module. So now let's get started with installation of PixyMon.
Note:
- Don't connect your Pixy camera with computer, first we will install the PixyMon software which will also install the driver for USB cable and then we will plug our Pixy Camera with computer.
How to Install Pixy Camera Software - PixyMon
- As I mentioned above, PixyMon is a software which is used to train our Pixy Camera module using Computer.
- So, first of all download the PixyMon software by clicking on the below button:
- At the time of writing this post, the latest version of PixyMon released is 2.0.9 for Windows so either download the software by clicking above button or visit http://cmucam.org/projects/cmucam5/files (Official site for PixyMon) to download latest version of PixyMon.
- Now after downloading the PixyMon, double click it to open and the first window will show up is shown in below figure:
- Now when this window pop up, click on the Next button.
- When you click the Next Button, the below window will open up.
- Now here Browse to your folder where you wanna install the PixyMon software and then click the Next button and you will get the below screen:
- Now here simply click the Next button again unless you wanna change the folder for the shortcut, which is not necessary.
- Now finally when you hit the Next button, it will show you all the configurations you set and will ask you to install the software as shown in below figure:
- Now hit the Install button and your software will start to install as shown in below figure:
- Now during installation, a new window will pop up as shown in below figure:
- Simply press OK button, this pop up is asking for the driver to install for the USB cable which we will plug in after installation of this software.
- Now that's the last window for installation of PixyMon software. Simple click Finish and you are done with the installation of Pixy Camera software.
Now we are done with installation of Pixy Camera software, in the next tutorial we are gonna have a look at How to install latest firmware for Pixy Camera. So stay tuned. :)[/vc_column_text][vc_empty_space height="30px"][/vc_column][/vc_row][vc_row][vc_column width="1/2"][vc_column_text]
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Upgrade Pixy camera Firmware >>
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Getting Started with Pixy Camera
Hello friends, hope you all are fine and having fun with your lives. Today's post is about getting started with pixy camera. Now, the first thing comes in mind is what is Pixy Camera so let's first have a little introduction about Pixy Camera on which I recently worked. Pixy Camera is a small camera board which uses NXP microcontroller. Its a very powerful board and can get easily interfaced with simple Arduino UNO board. So, now we can do image processing even on Arduino UNO. Image Processing needs a powerful board that's why we can't interface simple webcam with Arduino UNO or mega etc. Before using pixy camera, when I need to do on board image processing I always used either Arduino YUN, Raspberry Pi or Arduino USB host shield but still it was quite tough to do the image processing even on such powerful boards like Arduino YUN. But now with Pixy Camera module, one can quite easily do the image processing even on Arduino UNO.
Now question arises what this module does ? Actually this Pixy module has a NXP microcontroller on it which does all the image processing and is controlled by a computer. (We are gonna cover this in coming tutorials) Once you set its parameters like color detection or object detection etc then you simply unplug it from computer and plug it with Arduino or any other PIC Microcontroller. Now whenever that object comes in front of Pixy Camera it will automatically recognize it and will send the command to your microcontroller and will also send the parameters like X, Y coordinates or size etc of the object and what you need to do is to apply your algorithm on Arduino i.e. what you gonna do if the object is infront of the camera. Sounds complex, don't worry we are gonna follow everything in detail in coming tutorials. So, now we are gonna have a look at how to get started with Pixy Camera.
Getting Started with Pixy Camera
- So, when I ordered for my Pixy Camera, I got the box within 10 days.
- As I received the box I opened it and I got two items from it, one is the Pixy Camera board itself and second is the Serial to SPI cable which is used to connect Pixy Camera with Arduino or PIC Microcontroller.
- The Pixy Camera is shown in below figure:
- The Serial to SPI cable which is received has 9 pins on one end which is inserted in Pixy board while six pins on the other end which is inserted in Arduino Microcontroller.
- This cable is also shown in below figure:
- The black side of this cable is for microcontroller while the white side is for Pixy Camera board itself.
- Next cable you are gonna need is the USB to mini USB cable, which is not with the package so you need to get it on your own.
- I got mine as well and is shown in below figure:
- This cable is used to connect your Pixy Camera board with computer.
- Using this cable, we train our Pixy camera and let it know about colors and objects.
- We actually set signature using Pixy Camera Software, which I am gonna cover in my next tutorial and using this software we make pixy do incredible things.
Now we have all the tools to get started with Pixy Camera so now in the next tutorial, we will have a look at How to install Pixy Camera software in Windows. Click the below button to move to next tutorial. If you having questions please ask in comments below.
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How to Install Pixy Camera Software >>
Control Servo Motor with Arduino in Proteus
Hello friends, hope you all are fine and having fun with your lives. Today's post is about the Controlling of Servo Motor with Arduino in Proteus ISIS. Servo Motor is a common motor used in engineering projects for precise circular motion. We can move the servo motor at any desired angle, which is not possible in the case of other motors i.e. Stepper or DC.
For example, suppose I want to move an antenna at a precise angle of 47.5 degrees then if I use DC Motor, I have to use an encoder. So, in such cases instead of using a DC motor, I will prefer Servo Motor.
I have already posted Angle Control of Servo Motor using 555 Timer in which I have controlled servo motor using 555 timer and another tutorial about Controlling of Servo Motor using PIC Microcontroller in which I have controlled it with PIC16F877a. And today we are going to Control Servo Motor with Arduino and will design the simulation in Proteus ISIS.
First of all, we will have a look at simple control of servo motor with Arduino in Proteus ISIS and then we will check the control of the servo motor with Arduino using buttons in which we will move the servo motor to precise angles using buttons. So, let's get started with it. :)
| Where To Buy? |
|---|
| No. | Components | Distributor | Link To Buy |
| 1 | Servo Motor | Amazon | Buy Now |
| 2 | Arduino Uno | Amazon | Buy Now |
Simple Control of Servo Motor with Arduino in Proteus
- First of all, open your Proteus ISIS software and design the below simple circuit.
- You should also have a look at these Proteus Libraries of Components.
- Servo Motor has three pins:
- First Pin is Vcc.
- Second Pin is Control Pin.
- Third Pin is GND.
- The center pin is the controlling pin and goes to any digital pin of Arduino. I have connected the control pin to pin # 4 of Arduino.
Arduino Code for Servo Motor Control
- The next thing we need to do is to design the code for Arduino. So, open your Arduino software and copy paste the below code in it.
#include <Servo.h>
Servo myservo;
int pos = 0;
void setup()
{
myservo.attach(4);
}
void loop()
{
for(pos = 0; pos <= 180; pos += 1)
{
myservo.write(pos);
delay(15);
}
for(pos = 180; pos>=0; pos-=1)
{
myservo.write(pos);
delay(15);
}
}
- Now compile this code and get your hex file.
- It's the same code as given in the Servo folder of Examples in Arduino software.
- Upload your hex file to your Proteus Arduino board.
Note:
Proteus Simulation Results
- Now, run your simulation and you will see that your Servo motor will start moving from 90 degrees to -90 degrees and then back to 90 degrees and will keep on going like this, as shown in the below figures:
- Now when you start it, first of all, it will show Position A in the above figure then will move anticlockwise and pass the position B and finally will stop at Position C and then it will move clockwise and comes back to Position A after passing Position B.
- In this way, it will keep on moving between Position A and C.
- Till now we have seen a simple control of Servo Motor with Arduino in Proteus ISIS, now let's have a look at a bit complex control of servo motor with Arduino.
Control Servo Motor with Arduino using Push Buttons
- In the previous section, we have seen a simple Control of Servo Motor with Arduino in which we simply moved Servo motor from 90 degrees to -90 degrees and vice versa.
- Now I am going to control Servo motor using five push buttons and each push button will move the Servo motor to a precise angle.
- So, first of all, design a small design as shown in the below figure:
- I have added five buttons with Arduino and now with these five buttons, I will move the Servo motor to 90, 45, 0, -45 and -90 degrees. So, each button has its precise angle and it will move the motor to that angle only.
Arduino Code
- So, now the next thing is the code, copy paste the below code in your Arduino software and get the hex file:
#include <Servo.h>
Servo myservo;
int degree90 = 8;
int degree45 = 9;
int degree0 = 10;
int degree_45 = 11;
int degree_90 = 12;
void setup()
{
myservo.attach(4);
pinMode(degree90, INPUT_PULLUP);
pinMode(degree45, INPUT_PULLUP);
pinMode(degree0, INPUT_PULLUP);
pinMode(degree_45, INPUT_PULLUP);
pinMode(degree_90, INPUT_PULLUP);
}
void loop()
{
if(digitalRead(degree90) == LOW)
{
myservo.write(180);
}
if(digitalRead(degree45) == LOW)
{
myservo.write(117);
}
if(digitalRead(degree0) == LOW)
{
myservo.write(93);
}
if(digitalRead(degree_45) == LOW)
{
myservo.write(68);
}
if(digitalRead(degree_90) == LOW)
{
myservo.write(3);
}
}
- Upload this hex file to your Arduino board in Proteus and run the simulation.
Proteus Simulation Results
- Now press these buttons from top to bottom and you will get the below results:
- The above figure is quite self-explanatory but still, I explain a little.
- In the first figure, I pressed the first button and the motor moved to -90 degrees.
- In the second figure, I pressed the second button and the motor moved to -45 degrees.
- In the third figure, I pressed the third button and the motor moved to 0 degrees.
- In the fourth figure, I pressed the fourth button and the motor moved to 45 degrees.
- In the fifth figure, I pressed the fifth button and the motor moved to 90 degrees.
- In the sixth figure, all buttons are unpressed and the motor remained at the last position.
It was quite simple and hope I explained it properly. If you still have any questions then ask in the comments and I will try to resolve them. That's all for today, will see you guys in the next tutorial. Take care !!! :)
How to Reset Arduino Programmatically
Hello friends, hope you all are fine and having fun with your lives. Today's post is about How to Reset Arduino Programmatically. Sounds a bit weird, yes it is :) but literally in some cases, this technique is the only choice you have. It recently happened to me in one of my projects, that's why I know How important it is. Before going into details, let's first have a look at the resetting feature of Arduino.
If you have worked on any Arduino board, then you must have noticed the RESET pin in Arduino and you may wonder what's the use of this pin. So, today this pin is gonna get useful. Moreover, you have also noticed that when you upload the code to your Arduino board then the Arduino resets, another way of resetting Arduino is by opening the Serial Terminal in Arduino software, while connecting your Arduino board to your computer. As you open the Serial Terminal, the Arduino automatically gets reset. The third way of resetting Arduino is by pressing the push button. When you press and release the push button, Arduino gets reset. You should also have a look at How to get Hex File from Arduino.
So till now we have seen three ways of resetting Arduino but you have noticed that all of these methods are manual, you have to manually push the button or to open the Serial Terminal or to upload the code. Now in some projects, we have to reset Arduino Programmatically, like we don't do anything and it just reset itself automatically. Now how can we do that, that's the topic of today's tutorial. So, I am gonna share two methods today using which we are gonna reset Arduino programmatically. So, let's start with them.
| Where To Buy? |
|---|
| No. | Components | Distributor | Link To Buy |
| 1 | Jumper Wires | Amazon | Buy Now |
| 2 | Arduino Uno | Amazon | Buy Now |
Reset Arduino Programmatically using RESET Pin
- In the first method, we are going to reset Arduino Programmatically using the RESET Pin available on the Arduino board.
Note:
- If you haven't bought your Arduino UNO yet, then you can buy it from this reliable source:
- So, first of all, connect Arduino Reset Pin with any of the digital pins as I have connected it with Pin#4 shown in the below figure:
- Now upload the below code to your Arduino board:
int Reset = 4;
void setup() {
digitalWrite(Reset, HIGH);
delay(200);
pinMode(Reset, OUTPUT);
Serial.begin(9600);
Serial.println("How to Reset Arduino Programmatically");
Serial.println("www.TheEngineeringProjects.com");
delay(200);
}
void loop()
{
Serial.println("A");
delay(1000);
Serial.println("B");
delay(1000);
Serial.println("Now we are Resetting Arduino Programmatically");
Serial.println();
delay(1000);
digitalWrite(Reset, LOW);
Serial.println("Arduino will never reach there.");
}
- Once you have uploaded the code then and open your Arduino Serial Monitor and you will get something as shown in the below figure:
- As you can see in the above figure, our Arduino is not displaying the line "Arduino will never reach there" and got reset and then display from start. So that's how it's going to work.
- Now let's have a look at the second method of How to Reset Arduino Programmatically.
Reset Arduino Programmatically using reset Function
- In this method, we are not going to use any hardware pin, instead, we will do everything in programming.
- So, if you don't know much about Arduino Programming then you should have a look at Getting Started with Arduino Programming.
- Arduino has a built-in function named as resetFunc() which we need to declare at address 0 and when we execute this function Arduino gets reset automatically.
- So, no need of doing anything in hardware and simply upload the below code to your Arduino board.
void(* resetFunc) (void) = 0;
void setup() {
Serial.begin(9600);
Serial.println("How to Reset Arduino Programmatically");
Serial.println("www.TheEngineeringProjects.com");
delay(200);
}
void loop()
{
Serial.println("A");
delay(1000);
Serial.println("B");
delay(1000);
Serial.println("Now we are Resetting Arduino Programmatically");
Serial.println();
delay(1000);
resetFunc();
Serial.println("Arrduino will never reach there.");
}
- Now open your Arduino Serial Terminal and you will get the same output as we get in the first method and shown below:
- In the code you have seen that we defined the function resetFunc() and then where we call that function, our Arduino gets reset at that point.
It was quite a simple tutorial, but if you have any problems then ask in the comments and I will try to resolve them. So that's all for today and will meet in the next tutorial. Till then take care !!! :)
Arduino UNO PCB Design for Proteus ARES
Hello friends, hope you all are fine and having fun with your lives. Today's post, as the name suggests, is about Arduino UNO PCB Design in Proteus ARES. I have already posted Arduino Library for Proteus on my blog using which one can quite easily run Arduino simulation in Proteus.but what if you wanna do the Arduino UNO PCB design in Proteus, then you are lucky that you are reading this post. :)
In one of my projects, I have to design the PCB for Arduino in Proteus so I thought to also post it here so that others can download it as well. Normally PCB design is not required for Arduino and I usually get Atmega328 out of Arduino and use it separately but sometimes, depending on the requirements of your project, you may also need to place Arduino itself on the PCB so in such cases Arduino UNO PCB Design is required. Using this design you can place the Arduino on the PCB in upside down direction and then can take pins out and can use them as you want them to use. You should also have a look at How to do PCB Designing in Proteus ARES.
Let me give you a little introduction about Proteus ARES as I haven't posted much tutorials on it. When you install Proteus software in your computer then you get two exe files one is named as Proteus ISIS while the other one is named as Proteus ARES. If you need to test some electronic circuit i.e. need to design the simulation then you use Proteus ISIS and when you need to design the PCB design then its done in Proteus ARES. As here we are talking about the Arduino UNO PCB design so that's why we are using Proteus ARES. Here's the list of Top 10 PCB Design software. So, let's get started with it.
Arduino UNO PCB Design for Proteus ARES
- First of all, download this Arduino UNO PCB design, which I have designed in Proteus ARES.
Download Proteus ARES Design
- Once downloaded, then open the file and unrar it on your desktop.
- Now double click the file to open it, make sure you already installed the Proteus software.
- When you open it, it will look something as shown in below figure:
- Now select the whole PCB design, right click it and select Make package as shown in below figure:
- When you click on Make Package, a new pop up window will open up, as shown in below figure:
- Now in the New Package Name, you can give any name to it, as I have given Arduino Shield to it and can select any Package Category.
- After selecting these options, hit the OK button and this Arduino UNO PCB design will save in your Proteus ARES library as the name you gave it. Like mine is saved as Arduino shield.
- Now whenever you wanna use it, you simply need to search for it and it will come up.
- You can also attach it to your Arduino package in Proteus ISIS so that you simple design the circuit in Proteus ISIS and then design the PCB in Proteus ARES.
That's all for today, hope you got some knowledge out of it. It was quite easy but having any problems, ask in comments and I will help you out. Will see you guys in next tutorial. Till then take care :)
Intelligent Energy Saving System
Hello friends, hope you all are fine and having fun with your lives. Today, I am going to share a complete project with you guys. Its an Intelligent Energy Saving System which I designed around two years ago. So, today I thought to share it so that others could also get benefit. In this project, I have used Arduino UNO board for programming purposes. Its not much complicated project but is the basic for many complex projects.
Energy, is a small word, but is the problem of whole world. Particularly when we are talking about electrical energy. IF you consume more electrical energy then you will get quite huge bill at the end of the month. :P So, there's always work done on reducing the consumption of electrical energy and also we compare energy costs from different providers. As a human, suppose you turn ON your room fan, then normally you forget to turn it OFF and thus your bill keeps on increasing. So in order to avoid this, automation is the only tool which comes in handy. Like there must be such system which automatically detects whether someone is still in the room or not and if there's no one then lights got OFF automatically. In this way, you can quite easily reduce your electricity cost. This same concept is presented in this project, let's have a complete look over it. :)
Overview of Intelligent Energy Saving System
- In this project, we have designed a complete room and used two inductive loads i.e. bulbs and one fan.
- Now the purpose of this project was to save the energy so we used two IR sensors for counting.
- Now, if there's no one present in the room then the loads will automatically turn OFF and when someone will enter in the room then the loads will automatically turn ON.
- Moreover, we have also added a counter functionality in it i.e. the project will also count the number of people present in the room.
- All these parameters will also display on the LCD attached with Arduino.
Components Used
I am mentioning here the components used in designing this project. I am not giving the exact values as you will get them in the circuit diagrams. Here's the list:
- Arduino UNO
- IR Sensors
- 16 x 2 LCD
- 100W Bulbs
- 12V Fan
- 2 Relay Board
- 7805 (IC Regulator)
- LED (Indication)
- Resistance
- Capacitors
Circuit Diagrams of Intelligent Energy Saving System
Suppose you are designing this project then the first thing you are gonna need is the circuit diagrams for the project so here I am gonna show you all the circuit diagrams step by step so let's start:
1: Interfacing of Arduino with LCD
- First thing we are gonna need is the interfacing of Arduino with LCD. LCD used in this project is 16 x 2.
- I have first designed the simulation in Proteus as its always better to design the simulation before going into real hardware.
- Now upload the below code into it, just to test that whether its working fine or not:
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup()
{
lcd.begin(16, 2);
lcd.print("www.TheEngineer");
lcd.setCursor(0,1);
lcd.print("ingProjects.com");
}
void loop() {}
- Now run it and if everything's gone fine then you will get something as shown in below figure:
Note:
2: Circuit diagram of 2 Relay Board
- Next thing we are gonna need is the two relay board. Using these relays we are gonna turn ON or OFF our loads.
- Here's the circuit diagram for 2 relay board.
- As you can see in the above figure, I have used two relay board, where both the relays are controlled bt simple logic operators.
- Now instead of these logic operators, you need to give Arduino Pins here.
- I have made the first relay ON while the second relay is OFF.
- In the above figure, relay outputs are open so you can place anything here as its gonna act as switch. So, in our case the loads will be placed after this relay.
3: Circuit Design of Buzzer
- Next circuit design which we need to understand is the buzzer circuit design.
- Its quite simple and similar to 2 relay board. I have also published a detailed post on How to Design a Buzzer in Proteus ISIS, which will be quite helpful.
- Here' I am gonna explain it lightly, so let's have a look at the circuit diagram of buzzer:
- You can quite easily understand the above figure, where I have shown both the ON and OFF states of buzzer.
4: Circuit Diagram of IR Sensor:
- In this project, I have used two IR sensors, both are placed on the door one after another. You can read more about the designing of IR Sensor on my post Circuit Diagram of IR Sensor using 555 Timer.
- I have named them Entering IR Sensor and Leaving IR Sensor.
- The logic behind these two sensors is that, when someone enters in the room then he will first pass the Entering IR Sensor and then will hit the Leaving IR Sensor and if someone is leaving the room then he will first pass the Leaving IR Sensor and then will cut the Entering.
- So, in this way I am counting the persons if someone entering in the room I simply increment and if someone's leaving then I decrement.
- Now, if number of people in the room becomes zero then I turn OFF all the lights and the fan, and if there even one person in the room then I turn ON the lights and fan.
- Here's the circuit diagram of IR Sensor:
- IR transmitter and Receiver are not available in Proteus so that's why I have used the button so when you press the button, its like someone cut the beam of IR sensor, and you will get below result:
5: Complete Circuit Diagram of Intelligent Energy Saving System
- Now that we have designed the individual circuit diagrams, next thing we are gonna do is the assembly of complete project.
- So, here's the complete circuit diagram of this project:
- As you can see in the above figure, I have used two IR Sensors. The first IR Sensor is for entering in the room while the IR sensor is for leaving the room.
- Next is the buzzer circuit which is also quite simple and I have explain in detail above.
- LCD will display the no of people in a room and will also display either the bulb is ON or OFF, and also about Fan status.
- I haven't shown the relay circuit in above figure as it will not fit in the space and I think you guys can place it easily.
Programming Code for Intelligent Energy Saving System
- The code designed for this project is developed in Arduino software.
- Code is as follows:
#include <LiquidCrystal.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 8
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
float celsius, fahrenheit;
int Sensor1 = A0;
int Sensor2 = A1;
int Bulb = A5;
int Fan = A4;
int Buzzer = A3;
int Counter = 0;
int Sen1Check = 0;
int Sen2Check = 0;
void setup(void)
{
Serial.begin(9600);
digitalWrite(Bulb, HIGH);
digitalWrite(Fan, HIGH);
digitalWrite(Buzzer, HIGH);
pinMode(Sensor1, INPUT);
pinMode(Sensor2, INPUT);
pinMode(Bulb, OUTPUT);
pinMode(Fan, OUTPUT);
pinMode(Buzzer, OUTPUT);
lcd.begin(20, 4);
lcd.setCursor(0, 1);
lcd.print("Temp = ");
lcd.setCursor(0, 0);
lcd.print("Counter = ");
lcd.setCursor(12, 0);
lcd.print("Persons");
}
void loop()
{
CheckEntry();
CheckLeaving();
lcd.setCursor(7, 1);
sensors.requestTemperatures();
lcd.println(sensors.getTempCByIndex(0));
lcd.setCursor(12, 1);
lcd.print(" degC");
lcd.setCursor(10, 0);
if(Counter >= 0){lcd.print(Counter);}
if(Counter < 0){Counter = 0;}
if(Counter > 0)
{
digitalWrite(Bulb, LOW);
digitalWrite(Fan, LOW);
digitalWrite(Buzzer, HIGH);
lcd.setCursor(0, 2);
lcd.print("Fan : ON ");
lcd.setCursor(0, 3);
lcd.print("Bulb : ON ");
}
if(Counter < 1)
{
digitalWrite(Bulb, HIGH);
digitalWrite(Fan, HIGH);
digitalWrite(Buzzer, HIGH);
lcd.setCursor(0, 2);
lcd.print("Fan : OFF");
lcd.setCursor(0, 3);
lcd.print("Bulb : OFF");
}
}
void CheckEntry()
{
if(((digitalRead(Sensor1) == LOW) || (Sen1Check == 1)) && (Sen2Check == 0))
{
while(digitalRead(Sensor1) == LOW);
Sen1Check = 1;
if(digitalRead(Sensor2) == LOW)
{
Counter++;
Sen1Check = 0;
while(digitalRead(Sensor2) == LOW);
}
}
}
void CheckLeaving()
{
if(((digitalRead(Sensor2) == LOW) || (Sen2Check == 1)) && (Sen1Check == 0))
{
while(digitalRead(Sensor2) == LOW);
Sen2Check = 1;
if(digitalRead(Sensor1) == LOW)
{
Counter = Counter - 1;
Sen2Check = 0;
while(digitalRead(Sensor1) == LOW);
}
}
}
- Coding isn't much difficult for this project, but still if you get into some trouble ask in comments and I will check it out.
- Here's the complete video for this Intelligent Energy Saving System, which will explain all about the project.
That's all for today. I hope I have helped you guys in some way. Till next tutorial, take care ALLAH HAFIZ :)