How to Display Image in TFT Display with SD card Module

Posted by: Waqas Farooq July 15, 2022

A Step-by-Step Guide to Displaying Images on a TFT Display using an SD Card Module with Arduino

Introduction:

In the world of electronics, displaying images on TFT (Thin Film Transistor) displays is an exciting way to enhance visual projects. By leveraging an SD card module and an Arduino, you can create stunning visuals on a TFT display. In this post, we will walk you through the process of displaying images on a TFT display using an SD card module with Arduino. So let's dive in!

Understanding TFT Displays and SD Card Modules TFT displays

Understanding TFT Displays and SD Card Modules TFT displays are a type of LCD (Liquid Crystal Display) that provide vibrant colors and excellent image quality. On the other hand, an SD card module allows you to read and write data from an SD card. Combining these components offers a powerful solution for displaying images.

Gathering the Required Components

Gathering the Required Components To get started, gather the following components:Arduino board (e.g., Arduino Uno)
TFT display module
SD card module
Jumper wires
SD card containing the images you want to display

Setting Up the Hardware Connection

Setting Up the Hardware Connect the components as follows:Connect the TFT display module to the Arduino board using jumper wires. Make sure to connect the appropriate pins, such as CS (Chip Select), DC (Data/Command), MOSI (Master Out Slave In), SCK (Serial Clock), and RESET.
Connect the SD card module to the Arduino board. Ensure the CS pin of the SD card module is connected to the desired Arduino pin.

Installing the Required Libraries
Installing the Required Libraries To control the TFT display and SD card module, we need to install some libraries. Open the Arduino IDE, go to "Sketch" -> "Include Library" -> "Manage Libraries." Search for and install the following libraries:Adafruit GFX Library
Adafruit ILI9341 Library
SD Library

The Arduino Code Now
Writing the Arduino Code Now, let's write the Arduino code. Open a new sketch in the Arduino IDE and paste the following code

#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <SPI.h>
#include <SD.h>

#define TFT_CS 10
#define TFT_DC 9
#define SD_CS 4

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
File imageFile;

void setup() {
 tft.begin();
 tft.setRotation(3);

 SD.begin(SD_CS);

 displayImage("image.jpg");
}

void loop() {
 // Additional code, if needed
}

void displayImage(const char* filename) {
 imageFile = SD.open(filename);
 if (imageFile) {
 if (imageFile.isDirectory()) {
 Serial.println("Error: Given file is a directory.");
 imageFile.close();
 return;
 }

 tft.fillScreen(ILI9341_BLACK);

 uint16_t x = 0, y = 0;
 while (imageFile.available()) {
 uint8_t r = imageFile.read();
 uint8_t g = imageFile.read();
 uint8_t b = imageFile.read();

 uint16_t color = tft.color565(r, g, b);
 tft.drawPixel(x, y, color);

 x++;
 if (x >= tft.width()) {
 x = 0;
 y++;
 }
 }

 imageFile.close();
 }
 else {
 Serial.println("Error: Unable to open the file.");
 }
}
  
  
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</script><b>Uploading the Code and Testing</b><br />Uploading the Code and Testing Connect your Arduino board to your computer and select the appropriate board and port in the Arduino IDE. Then, upload the code to the Arduino. Ensure that the SD card contains an image named "image.jpg" (or modify the code accordingly). Power up your circuit, and you should see the image displayed on the TFT screen.<br /><br /><b>Experimenting and Customizing</b></div><div>Experimenting and Customizing Congratulations! You have successfully displayed an image on a TFT display using an SD card module with Arduino. Feel free to experiment with different images and modify the code to suit your requirements. You can add additional functionality, such as image scrolling or user interaction, to make your project even more engaging.<br /><br /><b>Conclusion:</b></div><div> Displaying images on a TFT display using an SD card module and Arduino opens up a world of possibilities for creative visual projects. By following this step-by-step guide, you can easily showcase images on a TFT screen. Remember to gather the necessary components, set up the hardware correctly, install the required libraries, and upload the provided Arduino code. Let your imagination run wild as you explore the potential of displaying captivating images on TFT displays<br /><br /><br />Read the tutorial below or watch the YouTube video.<br /><br /><img src="https://img1.blogblog.com/img/video_object.png" /><br /><br /><br /><br /><br /><br /><a href="https://blogger.googleusercontent.com/img/a/AVvXsEi3xeDqRxlDhlhPfY-9Hs02PIAb62upO07c4zQLoTm1yHhS7251eXdSIKPcPf1y0hjb48MNb_Rne3ahwTEvva56WFesnmKk1aLuzfTMe4qGglHoSb0hxyEE_MdbqFdEMyMwaKUubbFU4i1AoOr4Kj-OUVeMCYiborsGkRqhMnyPFagpqlPEJaVzgaMtDw"><img src="https://blogger.googleusercontent.com/img/a/AVvXsEi3xeDqRxlDhlhPfY-9Hs02PIAb62upO07c4zQLoTm1yHhS7251eXdSIKPcPf1y0hjb48MNb_Rne3ahwTEvva56WFesnmKk1aLuzfTMe4qGglHoSb0hxyEE_MdbqFdEMyMwaKUubbFU4i1AoOr4Kj-OUVeMCYiborsGkRqhMnyPFagpqlPEJaVzgaMtDw=w478-h269" /></a><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />

</div>

thank you so much I hope you will like this video and blog post please visit again

ESP8266 DHT11/DHT22 Temperature and Humidity Web Server

Posted by: Waqas Farooq April 20, 2022

How to interface TFT ILI9431 LCD With Arduino

Posted by: Waqas Farooq March 16, 2022

HI friends in thi video you will learn how to interface TFT ILI9431 LCD with Arduino its easy process, It's a simulation in proteus. you can also use TFT lcd shield its a color tft lcd . I hope you like this tutorial

Introduction to TFT LCD ILI9431

ILI9341 is a 262,144-shading single-chip SOC driver for a-TFT fluid precious stone showcase with goal of 240RGBx320

specks, containing a 720-channel source driver, a 320-channel door driver, 172,800 bytes GRAM for realistic

show information of 240RGBx320 specks, and power supply circuit.

ILI9341 upholds equal 8-/9-/16-/18-piece information transport MCU interface, 6-/16-/18-piece information transport RGB interface and

3-/4-line sequential fringe interface (SPI). The moving picture region can be indicated in interior GRAM by window

address work. The predefined window region can be refreshed specifically, so that moving picture can be

shown at the same time free of still picture region.

ILI9341 can work with 1.65V ~ 3.3V I/O interface voltage and a fused voltage devotee circuit to

produce voltage levels for driving a LCD. ILI9341 upholds full tone, 8-shading show mode and rest mode for

exact power control by programming and these highlights make the ILI9341 an optimal LCD driver for medium or little

size compact items, for example, computerized cells, PDA, MP3 and PMP where long battery duration is a

main issue.

Arduino

An Arduino is an open-source microcontroller advancement board. In plain English, you can utilize the Arduino to understand sensors and control things like engines and lights. This permits you to transfer projects to this board which can then cooperate with things in reality. With this, you can cause gadgets which to answer and respond to the world in general.

For example, you can peruse a dampness sensor associated with a pruned plant and turn on a programmed watering framework assuming that it gets excessively dry. Or on the other hand, you can hold fast alone visit server which is connected to your web switch. Or on the other hand, you can have it tweet each time your feline elapses through a pet entryway. Or on the other hand, you can have it start a pot of espresso when your alert goes off in the first part of the day.

Fundamentally, assuming there is something in any capacity constrained by power, the Arduino can connect with it in some way. Furthermore, regardless of whether it isn't constrained by power, you can presumably still use things which are (like engines and electromagnets), to connect with it.

The conceivable outcomes of the Arduino are practically boundless. Thusly, it is absolutely impossible that that one single instructional exercise can cover all that you could at any point have to know. All things considered, I've put forth a valiant effort to give an essential outline of the key abilities and information that you want to make your Arduino ready. In the case of nothing more, this should work as a springboard into additional trial and error and learning.

About Mega

Arduino Mega is the most utilized and adored equipment board in the Arduino creator local area. Little, minimal, modest, it is exactly what you want to make a magnificent task. Regardless of whether you know the inner working it's fine in light of the fact that Arduino was made only for that.

Watch this video before going further

Code

 
/***************************************************
  This is our GFX example for the Adafruit ILI9341 Breakout and Shield
  ----> http://www.adafruit.com/products/1651
  Check out the links above for our tutorials and wiring diagrams
  These displays use SPI to communicate, 4 or 5 pins are required to
  interface (RST is optional)
  Adafruit invests time and resources providing this open source code,
  please support Adafruit and open-source hardware by purchasing
  products from Adafruit!
  Written by Limor Fried/Ladyada for Adafruit Industries.
  MIT license, all text above must be included in any redistribution
 ****************************************************/


#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"

// For the Adafruit shield, these are the default.
//#define TFT_DC 9
//#define TFT_CS 10

// Use hardware SPI (on Uno, #13, #12, #11) and the above for CS/DC
//Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
// If using the breakout, change pins as desired
Adafruit_ILI9341 tft = Adafruit_ILI9341(8, 9, 11, 13,10, 12);

void setup() {
  Serial.begin(9600);
  Serial.println("ILI9341 Test!"); 
 
  tft.begin();

  // read diagnostics (optional but can help debug problems)
  uint8_t x = tft.readcommand8(ILI9341_RDMODE);
  Serial.print("Display Power Mode: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDMADCTL);
  Serial.print("MADCTL Mode: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDPIXFMT);
  Serial.print("Pixel Format: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDIMGFMT);
  Serial.print("Image Format: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDSELFDIAG);
  Serial.print("Self Diagnostic: 0x"); Serial.println(x, HEX); 
  
  Serial.println(F("Benchmark                Time (microseconds)"));
  delay(10);
  Serial.print(F("Screen fill              "));
  Serial.println(testFillScreen());
  delay(500);

  Serial.print(F("Text                     "));
  Serial.println(testText());
  delay(3000);

  Serial.print(F("Lines                    "));
  Serial.println(testLines(ILI9341_CYAN));
  delay(500);

  Serial.print(F("Horiz/Vert Lines         "));
  Serial.println(testFastLines(ILI9341_RED, ILI9341_BLUE));
  delay(500);

  Serial.print(F("Rectangles (outline)     "));
  Serial.println(testRects(ILI9341_GREEN));
  delay(500);

  Serial.print(F("Rectangles (filled)      "));
  Serial.println(testFilledRects(ILI9341_YELLOW, ILI9341_MAGENTA));
  delay(500);

  Serial.print(F("Circles (filled)         "));
  Serial.println(testFilledCircles(10, ILI9341_MAGENTA));

  Serial.print(F("Circles (outline)        "));
  Serial.println(testCircles(10, ILI9341_WHITE));
  delay(500);

  Serial.print(F("Triangles (outline)      "));
  Serial.println(testTriangles());
  delay(500);

  Serial.print(F("Triangles (filled)       "));
  Serial.println(testFilledTriangles());
  delay(500);

  Serial.print(F("Rounded rects (outline)  "));
  Serial.println(testRoundRects());
  delay(500);

  Serial.print(F("Rounded rects (filled)   "));
  Serial.println(testFilledRoundRects());
  delay(500);

  Serial.println(F("Done!"));

}


void loop(void) {
  for(uint8_t rotation=0; rotation<4; rotation++) {
    tft.setRotation(rotation);
    testText();
    delay(1000);
  }
}

unsigned long testFillScreen() {
  unsigned long start = micros();
  tft.fillScreen(ILI9341_BLACK);
  yield();
  tft.fillScreen(ILI9341_RED);
  yield();
  tft.fillScreen(ILI9341_GREEN);
  yield();
  tft.fillScreen(ILI9341_BLUE);
  yield();
  tft.fillScreen(ILI9341_BLACK);
  yield();
  return micros() - start;
}

unsigned long testText() {
  tft.fillScreen(ILI9341_BLACK);
  unsigned long start = micros();
  tft.setCursor(0, 0);
  tft.setTextColor(ILI9341_WHITE);  tft.setTextSize(1);
  tft.println("Hello World!");
  tft.setTextColor(ILI9341_YELLOW); tft.setTextSize(2);
  tft.println(1234.56);
  tft.setTextColor(ILI9341_RED);    tft.setTextSize(3);
  tft.println(0xDEADBEEF, HEX);
  tft.println();
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(5);
  tft.println("Groop");
  tft.setTextSize(2);
  tft.println("I implore thee,");
  tft.setTextSize(1);
  tft.println("my foonting turlingdromes.");
  tft.println("And hooptiously drangle me");
  tft.println("with crinkly bindlewurdles,");
  tft.println("Or I will rend thee");
  tft.println("in the gobberwarts");
  tft.println("with my blurglecruncheon,");
  tft.println("see if I don't!");
  return micros() - start;
}

unsigned long testLines(uint16_t color) {
  unsigned long start, t;
  int           x1, y1, x2, y2,
                w = tft.width(),
                h = tft.height();

  tft.fillScreen(ILI9341_BLACK);
  yield();
  
  x1 = y1 = 0;
  y2    = h - 1;
  start = micros();
  for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);
  x2    = w - 1;
  for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);
  t     = micros() - start; // fillScreen doesn't count against timing

  yield();
  tft.fillScreen(ILI9341_BLACK);
  yield();

  x1    = w - 1;
  y1    = 0;
  y2    = h - 1;
  start = micros();
  for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);
  x2    = 0;
  for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);
  t    += micros() - start;

  yield();
  tft.fillScreen(ILI9341_BLACK);
  yield();

  x1    = 0;
  y1    = h - 1;
  y2    = 0;
  start = micros();
  for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);
  x2    = w - 1;
  for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);
  t    += micros() - start;

  yield();
  tft.fillScreen(ILI9341_BLACK);
  yield();

  x1    = w - 1;
  y1    = h - 1;
  y2    = 0;
  start = micros();
  for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);
  x2    = 0;
  for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);

  yield();
  return micros() - start;
}

unsigned long testFastLines(uint16_t color1, uint16_t color2) {
  unsigned long start;
  int           x, y, w = tft.width(), h = tft.height();

  tft.fillScreen(ILI9341_BLACK);
  start = micros();
  for(y=0; y<h; y+=5) tft.drawFastHLine(0, y, w, color1);
  for(x=0; x<w; x+=5) tft.drawFastVLine(x, 0, h, color2);

  return micros() - start;
}

unsigned long testRects(uint16_t color) {
  unsigned long start;
  int           n, i, i2,
                cx = tft.width()  / 2,
                cy = tft.height() / 2;

  tft.fillScreen(ILI9341_BLACK);
  n     = min(tft.width(), tft.height());
  start = micros();
  for(i=2; i<n; i+=6) {
    i2 = i / 2;
    tft.drawRect(cx-i2, cy-i2, i, i, color);
  }

  return micros() - start;
}

unsigned long testFilledRects(uint16_t color1, uint16_t color2) {
  unsigned long start, t = 0;
  int           n, i, i2,
                cx = tft.width()  / 2 - 1,
                cy = tft.height() / 2 - 1;

  tft.fillScreen(ILI9341_BLACK);
  n = min(tft.width(), tft.height());
  for(i=n; i>0; i-=6) {
    i2    = i / 2;
    start = micros();
    tft.fillRect(cx-i2, cy-i2, i, i, color1);
    t    += micros() - start;
    // Outlines are not included in timing results
    tft.drawRect(cx-i2, cy-i2, i, i, color2);
    yield();
  }

  return t;
}

unsigned long testFilledCircles(uint8_t radius, uint16_t color) {
  unsigned long start;
  int x, y, w = tft.width(), h = tft.height(), r2 = radius * 2;

  tft.fillScreen(ILI9341_BLACK);
  start = micros();
  for(x=radius; x<w; x+=r2) {
    for(y=radius; y<h; y+=r2) {
      tft.fillCircle(x, y, radius, color);
    }
  }

  return micros() - start;
}

unsigned long testCircles(uint8_t radius, uint16_t color) {
  unsigned long start;
  int           x, y, r2 = radius * 2,
                w = tft.width()  + radius,
                h = tft.height() + radius;

  // Screen is not cleared for this one -- this is
  // intentional and does not affect the reported time.
  start = micros();
  for(x=0; x<w; x+=r2) {
    for(y=0; y<h; y+=r2) {
      tft.drawCircle(x, y, radius, color);
    }
  }

  return micros() - start;
}

unsigned long testTriangles() {
  unsigned long start;
  int           n, i, cx = tft.width()  / 2 - 1,
                      cy = tft.height() / 2 - 1;

  tft.fillScreen(ILI9341_BLACK);
  n     = min(cx, cy);
  start = micros();
  for(i=0; i<n; i+=5) {
    tft.drawTriangle(
      cx    , cy - i, // peak
      cx - i, cy + i, // bottom left
      cx + i, cy + i, // bottom right
      tft.color565(i, i, i));
  }

  return micros() - start;
}

unsigned long testFilledTriangles() {
  unsigned long start, t = 0;
  int           i, cx = tft.width()  / 2 - 1,
                   cy = tft.height() / 2 - 1;

  tft.fillScreen(ILI9341_BLACK);
  start = micros();
  for(i=min(cx,cy); i>10; i-=5) {
    start = micros();
    tft.fillTriangle(cx, cy - i, cx - i, cy + i, cx + i, cy + i,
      tft.color565(0, i*10, i*10));
    t += micros() - start;
    tft.drawTriangle(cx, cy - i, cx - i, cy + i, cx + i, cy + i,
      tft.color565(i*10, i*10, 0));
    yield();
  }

  return t;
}

unsigned long testRoundRects() {
  unsigned long start;
  int           w, i, i2,
                cx = tft.width()  / 2 - 1,
                cy = tft.height() / 2 - 1;

  tft.fillScreen(ILI9341_BLACK);
  w     = min(tft.width(), tft.height());
  start = micros();
  for(i=0; i<w; i+=6) {
    i2 = i / 2;
    tft.drawRoundRect(cx-i2, cy-i2, i, i, i/8, tft.color565(i, 0, 0));
  }

  return micros() - start;
}

unsigned long testFilledRoundRects() {
  unsigned long start;
  int           i, i2,
                cx = tft.width()  / 2 - 1,
                cy = tft.height() / 2 - 1;

  tft.fillScreen(ILI9341_BLACK);
  start = micros();
  for(i=min(tft.width(), tft.height()); i>20; i-=6) {
    i2 = i / 2;
    tft.fillRoundRect(cx-i2, cy-i2, i, i, i/8, tft.color565(0, i, 0));
    yield();
  }

  return micros() - start;
}

All the components that you need for your project are easily available in a nearby store.

So get yourself going and and make something cool.

How to Control Stepper Motor with ESP8266 | Node MCU

Posted by: Waqas Farooq December 27, 2021

How to Control Stepper Motor with ESP8266 | Node MCU

In this tutorial you will learn how to control stepper motor with ESP8266 or node mcu, its easy follow the circuit diagram which i have uploaded on github and on my blog post you can go there to download and make it yourself

Here is the Video link : https://youtu.be/_jbAckVpFOk Video of this tutorial

How to control Stepper motor with esp8266 tutorial

Here is its complete circuit diagram which I have made it on Fritzing software is given below

Circuit Diagram of above tutorial

you can get the code from here and also from github click this link https://github.com/waqasfarooq124/Control-Stepper-Motor-with-ESP8266 or copy it from below. Code of this project

int Pin1 = D1;//IN1 is connected 
int Pin2 = D2;//IN2 is connected   
int Pin3 = D3;//IN3 is connected 
int Pin4 = D4;//IN4 is connected

int pole1[] ={0,0,0,0, 0,1,1,1, 0};//pole1, 8 step values
int pole2[] ={0,0,0,1, 1,1,0,0, 0};//pole2, 8 step values
int pole3[] ={0,1,1,1, 0,0,0,0, 0};//pole3, 8 step values
int pole4[] ={1,1,0,0, 0,0,0,1, 0};//pole4, 8 step values

int poleStep = 0; 
int  dirStatus = 3;// stores direction status 3= stop (do not change)

String buttonTitle1[] ={"CCW", "CW"};//Watch Video for details (on Udemy)
String buttonTitle2[] ={"CCW", "CW"};
String argId[] ={"ccw", "cw"};

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>

#ifndef STASSID
#define STASSID "PTCL-BB"
#define STAPSK  "Waqas4485096"
#endif

const char *ssid = STASSID;
const char *password = STAPSK;

ESP8266WebServer server(80);

void handleRoot() {

//Robojax.com ESP32 Relay Motor Control
 String HTML ="<!DOCTYPE html>\
  <html>\
  <head>\
  \t\n<title>Robojax 28BYJ-48 Motor Control</title>\
  \t\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\
  \n<style>\
 \nhtml,body{\t\nwidth:100%\;\nheight:100%\;\nmargin:0}\n*{box-sizing:border-box}\n.colorAll{\n\tbackground-color:#90ee90}\n.colorBtn{\n\tbackground-color:#add8e6}\n.angleButtdon,a{\n\tfont-size:30px\;\nborder:1px solid #ccc\;\ndisplay:table-caption\;\npadding:7px 10px\;\ntext-decoration:none\;\ncursor:pointer\;\npadding:5px 6px 7px 10px}a{\n\tdisplay:block}\n.btn{\n\tmargin:5px\;\nborder:none\;\ndisplay:inline-block\;\nvertical-align:middle\;\ntext-align:center\;\nwhite-space:nowrap}\n";
   
  HTML +="</style>\n\n</head>\n\n<body>\n<h1>28BYJ-48 Stepper Motor Control </h1>\n";

if(dirStatus ==2){
    HTML +="\n\t<h2><span style=\"background-color: #FFFF00\">Motor Running in CW</span></h2>\n";    
   }else if(dirStatus ==1){
    HTML +="\n\t<h2><span style=\"background-color: #FFFF00\">Motor Running in CCW</span></h2>\n";      
   }else{
    HTML +="\n\t<h2><span style=\"background-color: #FFFF00\">Motor OFF</span></h2>\n";    
   }
      if(dirStatus ==1){
        HTML +="\t<div class=\"btn\">\n\t\t<a class=\"angleButton\" style=\"background-color:#f56464\"  href=\"/motor?";
        HTML += argId[0];
        HTML += "=off\">";
        HTML +=buttonTitle1[0]; //motor ON title
      }else{
        HTML +="\t<div class=\"btn\">\n\t\t<a class=\"angleButton \" style=\"background-color:#90ee90\"  href=\"/motor?";  
         HTML += argId[0];
        HTML += "=on\">";       
        HTML +=buttonTitle2[0];//motor OFF title   
      }   
     HTML +="</a>\t\n\t</div>\n\n";  
       //Watch details at my Arduino Course at Udemy.com
      if(dirStatus ==2){
        HTML +="\t<div class=\"btn\">\n\t\t<a class=\"angleButton\" style=\"background-color:#f56464\"  href=\"/motor?";
        HTML += argId[1];
        HTML += "=off\">";
        HTML +=buttonTitle1[1]; //motor ON title
      }else{
        HTML +="\t<div class=\"btn\">\n\t\t<a class=\"angleButton \" style=\"background-color:#90ee90\"  href=\"/motor?";  
         HTML += argId[1];
        HTML += "=on\">";       
        HTML +=buttonTitle2[1];//motor OFF title   
      }   
     HTML +="</a>\t\n\t</div>\n\n";

HTML +="\t\n</body>\n</html>\n";
  server.send(200, "text/html", HTML);

}

void handleNotFound() {

String message = "File Not Found\n\n";
  message += "URI: ";
  message += server.uri();
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET) ? "GET" : "POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";

for (uint8_t i = 0; i < server.args(); i++) {
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }

server.send(404, "text/plain", message);

}

void setup(void) {

//Robojax.com 28BYJ-48 Steper Motor Control
 
 pinMode(Pin1, OUTPUT);//define pin for ULN2003 in1 
 pinMode(Pin2, OUTPUT);//define pin for ULN2003 in2   
 pinMode(Pin3, OUTPUT);//define pin for ULN2003 in3   
 pinMode(Pin4, OUTPUT);//define pin for ULN2003 in4

Serial.begin(115200);//initialize the serial monitor
  Serial.println("28BYJ-48 Stepper Motor Control");

//Robojax.com 28BYJ-48 Steper Motor Control
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.println("");

// Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: http://");
  Serial.println(WiFi.localIP());

//multicast DNS   //Robojax.com 28BYJ-48 Steper Motor Control
  if (MDNS.begin("robojaxESP8266")) {
    Serial.println("MDNS responder started");
    Serial.println("access via http://robojaxESP8266");
  }

server.on("/", handleRoot);
  server.on("/motor", HTTP_GET, motorControl); 
  server.onNotFound(handleNotFound);
  server.begin();
  Serial.println("HTTP server started");
}

void loop(void) {
  server.handleClient();
  MDNS.update();
  //Watch details at my Arduino Course at Udemy.com
if(dirStatus ==1){ 
   poleStep++; 
    driveStepper(poleStep);    
 }else if(dirStatus ==2){ 
   poleStep--; 
    driveStepper(poleStep);    
 }else{
  driveStepper(8);   
 }
 if(poleStep>7){ 
   poleStep=0; 
 } 
 if(poleStep<0){ 
   poleStep=7; 
 }

delay(1);
   //Robojax.com 28BYJ-48 Steper Motor Control  
}

void motorControl() {

//Watch details at my Arduino Course at Udemy.com
    if(server.arg(argId[0]) == "on")
    {
      dirStatus = 1;// CCW 
               
    }else if(server.arg(argId[0]) == "off"){
      dirStatus = 3;  // motor OFF 
          
    }else if(server.arg(argId[1]) == "on"){
      dirStatus = 2;  // CW  
          
    }else if(server.arg(argId[1]) == "off"){
      dirStatus = 3;  // motor OFF
          
    }

handleRoot();
}//motorControl end

void driveStepper(int c)
{
  //Watch details at my Arduino Course at Udemy.com
     digitalWrite(Pin1, pole1[c]);  
     digitalWrite(Pin2, pole2[c]); 
     digitalWrite(Pin3, pole3[c]); 
     digitalWrite(Pin4, pole4[c]);   
}//driveStepper end here

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How to Blink Multiple led Simultaneously

Posted by: Waqas Farooq December 10, 2021

Blink Multiple led Simultaneously

Hi dear This is Arduino Fish Feeder Project and I will be simulating this circuit on proteus and you can go this link to find code and schematic of this project given below

Component List

Arduino UNO

Red Green and Blue LEDs

Resistors 220 ohm

Jumper Wires

Bread Board

Watch tutorial

Circuit Diagram of this project

Circuit Diagram

Code of this project

  

  
  int red = 13;
int intervalRed = 1000; //how long to delay in millis
unsigned long previousRed = 0;
int redState = LOW;

int blue = 12;
int intervalBlue = 1000; //how long to delay in millis
unsigned long previousBlue = 0;
int blueState = LOW;

int green = 11;
int intervalGreen = 1000; //how long to delay in millis
unsigned long previousGreen = 0;
int greenState = LOW;

void setup() {
  Serial.begin(9600);
  pinMode(red, OUTPUT);
  pinMode(blue, OUTPUT);
  pinMode(green, OUTPUT);
}

void checkRed() {
  unsigned long currentMillis = millis();

  if (currentMillis - previousRed >= intervalRed) {
    //save this reading!
    previousRed = currentMillis;

    //figure out if you should turn the LED on or off
    if (redState == LOW) {
      redState = HIGH;
    } else {
      redState = LOW;
    }
    digitalWrite(red, redState);
  }
}

void checkGreen() {
  unsigned long currentMillis = millis();

  if (currentMillis - previousGreen >= intervalGreen) {
    //save this reading!
    previousGreen = currentMillis;

    //figure out if you should turn the LED on or off
    if (greenState == LOW) {
      greenState = HIGH;
    } else {
      greenState = LOW;
    }
    digitalWrite(green, greenState);
  }
}

void checkBlue() {
  unsigned long currentMillis = millis();

  if (currentMillis - previousBlue >= intervalBlue) {
    //save this reading!
    previousBlue = currentMillis;

    //figure out if you should turn the LED on or off
    if (blueState == LOW) {
      blueState = HIGH;
    } else {
      blueState = LOW;
    }
    digitalWrite(blue, blueState);
  }
}


void loop() {
  checkRed();
  checkGreen();
  checkBlue();
}

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How To Make Arduino Fish Feeder Ultimate Guide

Posted by: Waqas Farooq November 18, 2021

Arduino Fish Feeder Ultimate Guide

Hi dear This is Arduino Fish Feeder Project and I will be simulating this circuit on proteus and you can go this link to find code and schematic of this project given below

Component List

Arduino UNO
Liquid Crystal LCD 1602 (16x2)

RTC Real-Time Module 1307

Servo Motor SG-90
Jumper Wires

Bread Board

Watch tutorial

Circuit Diagram of this project

Circuit Diagram

Code of this project

  

  //      https://allelectronictech.blogspot.com/2021/11/how-to-make-arduino-fish-feeder.html
  
  #include <Wire.h>
#include <EEPROM.h>
#include <RTClib.h>
#include <LiquidCrystal.h>
#include <SoftwareSerial.h>

#include <Servo.h>
Servo myservo;
int pos = 0; 
#define relay 7
#define btn1 6
#define btn2 5
#define btn3 4
#define btn4 2


LiquidCrystal lcd(13, 12, 11, 10, 9, 8);
RTC_DS1307 RTC;
int starthr=0,startmin=0,offhr=0,offmin=0;
int HOUR,MINUT,SECOND,DAY,MONTH,YEAR;

byte Aalpha[8] ={  0b01110,
                   0b10001,
                   0b11111,
                   0b10001,
                   0b10001,
                   0b00000,
                   0b00000,
                   0b00000
                   };
 byte Malpha[8] ={ 0b10001,
                   0b11011,
                   0b10101,
                   0b10001,
                   0b10001,
                   0b00000,
                   0b00000,
                   0b00000};                                      
 byte Palpha[8]={  0b11100,
                   0b10010,
                   0b11100,
                   0b10000,
                   0b10000,
                   0b00000,
                   0b00000,
                   0b00000};

void setup() {
  // put your btn3up code here, to run once:
   Wire.begin();
   RTC.begin();
   lcd.begin(16,2);
   Serial.begin(9600);
   myservo.attach(3);
   //myservo.write(45); 
   pinMode(btn1, INPUT);
   pinMode(btn2, INPUT);
   pinMode(btn3, INPUT);
   pinMode(btn4, INPUT);
   pinMode(relay, OUTPUT);
   digitalWrite(relay,LOW); 
   lcd.setCursor(0,0);
   lcd.print("Arduino Fish Feeder");
   Serial.print("Arduino Fish Feeder"); 
   lcd.setCursor(0,1);
   lcd.print("  DEVICE ON/OFF ");
   Serial.print("  DEVICE ON/OFF "); 
   delay(3000);
 if(!RTC.isrunning())
 {
 RTC.adjust(DateTime(__DATE__,__TIME__));
 }
}

void loop() {
  // put your main code here, to run repeatedly:
DateTime now = RTC.now();
if(digitalRead(btn4)==LOW){
  deviceontime();
  deviceofftime();
}
 
 lcd.clear();
 lcd.setCursor(0,0);
 lcd.print("TIME:");
 Serial.print("TIME:");
 lcd.setCursor(6,0);
 printDigits(HOUR=now.hour()); 
 lcd.print(":");
 Serial.print(":");
 printDigits(MINUT=now.minute());
 lcd.print(":");
 Serial.print(":");
 printDigits(SECOND=now.second());
 if(HOUR < 12){                  // Adding the AM/PM sufffix
          lcd.createChar(5,Aalpha);
          lcd.createChar(6,Malpha);
          lcd.setCursor(14,0);
          lcd.write(5);
          lcd.setCursor(15,0);
          lcd.write(6);
          
    }
   else{
          lcd.createChar(5,Palpha);
          lcd.createChar(6,Malpha);
          lcd.setCursor(14,0);
          lcd.write(5);
          lcd.setCursor(15,0);
          lcd.write(6);
   } 
 lcd.setCursor(0,1);
 lcd.print("DATE: ");
 Serial.print("DATE: ");
 printDigits(DAY=now.day());
 lcd.print("/");
 Serial.print("/");
 printDigits(MONTH=now.month());
 lcd.print("/");
 Serial.print("/");
 lcd.print(YEAR=now.year());
 digitalWrite(relay,LOW);
 myservo.write(pos);
 delay(1000);
 if(HOUR== EEPROM.read(0) && MINUT == EEPROM.read(1)){
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("  DEVICE ON/OFF ");
  Serial.print(" DEVICE ON/OFF ");
  digitalWrite(relay,HIGH);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
  myservo.write(pos);
  delay(5000);
  myservo.write(180);
  delay(1000);
 /* for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees
    // in steps of 1 degree
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(15);                       // waits 15ms for the servo to reach the position
  }
  for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(15);                       // waits 15ms for the servo to reach the position
  } */
   
  CheckTime();
 }
}

void printDigits(int digits)//this void function is really useful; it adds a "0" to the
//beginning of the number, so that 5 minutes is displayed as "00:05:00", rather than "00:5 :00"
{
  if(digits < 10) 
  {
    lcd.print("0");
    Serial.print("0");
    lcd.print(digits);
  }
  else
  {
    lcd.print(digits);
  }
}
/* Function to check matching time */
void CheckTime()
{
  int checkhrOFF=0,checkminOFF=0;
  while(1)
  { 
  DateTime now = RTC.now();
  lcd.setCursor(0,1);
  lcd.print("TIME: ");
  Serial.print("TIME: ");
  printDigits(HOUR=now.hour()); 
  lcd.print(":");
  Serial.print(":");
  printDigits(MINUT=now.minute());
  lcd.print(":");
  Serial.print(":");
  printDigits(SECOND=now.second());
  checkhrOFF=EEPROM.read(2);
  checkminOFF=EEPROM.read(3);
  if(HOUR == checkhrOFF && MINUT == checkminOFF){
   lcd.clear();
  lcd.setCursor(0,1);
  lcd.print(" Device Turn OFF");
  Serial.print(" Device Turn OFF");
  digitalWrite(relay,LOW);
  myservo.write(pos);
  delay(2000);
  break;   
  }
 }
}
void deviceontime(){
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print("ENTER ON TIME");
        Serial.print("ENTER ON TIME");
        lcd.setCursor(8,1);
        lcd.print("00:00:00");
        Serial.print("00:00:00");
       while(1){
             if(digitalRead(btn1)==LOW){
              starthr++;
              lcd.setCursor(8,1);
              printDigits(starthr);
              //EEPROM.write(0,starthr);
              delay(200);
              if(starthr==24)
              starthr=0;
             }
             if(digitalRead(btn2)==LOW){
              startmin++;
              lcd.setCursor(11,1);
              printDigits(startmin);
             // EEPROM.write(0,startmin);
              delay(200);
              if(startmin==60)
              startmin=0;
             }
              if(digitalRead(btn3)==LOW){
                 
                 EEPROM.write(0,starthr);
                 EEPROM.write(1,startmin);
                 lcd.setCursor(0,0);
                 lcd.print(" START TIME SET ");
                 Serial.print(" START TIME SET ");
                 lcd.setCursor(0,1);
                 lcd.print("AT: ");
                 Serial.print("AT: ");
                 printDigits(EEPROM.read(0));
                 lcd.print(":");
                 Serial.print(":");
                 printDigits(EEPROM.read(1));
                 lcd.print(":00");
                 lcd.print("     ");
                 Serial.print(":00");
                 Serial.print("     ");
                 delay(5000);
                 starthr=0;
                 startmin=0;
                 break;
              }
       }
}


void deviceofftime(){
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print("ENTER OFF TIME");
        Serial.print("ENTER OFF TIME");
        lcd.setCursor(8,1);
        lcd.print("00:00:00");
        Serial.print("00:00:00");
       while(1){
             if(digitalRead(btn1)==LOW){
              offhr++;
              lcd.setCursor(8,1);
              printDigits(offhr);
              //EEPROM.write(0,starthr);
              delay(200);
              if(offhr==24)
              offhr=0;
             }
             if(digitalRead(btn2)==LOW){
              offmin++;
              lcd.setCursor(11,1);
              printDigits(offmin);
             // EEPROM.write(0,startmin);
              delay(200);
              if(offmin==60)
              offmin=0;
             }
              if(digitalRead(btn3)==LOW){
                 EEPROM.write(2,offhr);
                 EEPROM.write(3,offmin);
                 lcd.setCursor(0,0);
                 lcd.print("  OFF TIME SET  ");
                 Serial.print("  OFF TIME SET  ");
                 lcd.setCursor(0,1);
                 lcd.print("AT: ");
                 Serial.print("AT: ");
                 printDigits(EEPROM.read(2));
                 lcd.print(":");
                 Serial.print(":");
                 printDigits(EEPROM.read(3));
                 lcd.print(":00");
                 Serial.print(":00");
                 lcd.print("     ");
                 Serial.print("     ");
                 delay(5000);
                 offhr=0;
                 offmin=0;
                 break;
              }
             
       }
}

Further the schematic of the code is also given below

If you need want to download the code and schematic altogether you can got this link: https://github.com/waqasfarooq124/tft-Ili9431-code

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Poultry Farm Control Shed Control Circuit using Arduino

Posted by: Waqas Farooq November 02, 2021

Poultry Farm Control Shed Control Circuit using Arduino

Hi dear friends in this video you will learn how to turn on/off fan and heater in poultry farm using only Arduino its very easy code and list of components & circuit diagram and code given blow

Component List

Arduino UNO
Liquid Crystal LCD 1602 (16x2)

Temperature Sensor LM35
Jumper Wires

Bread Board

Watch tutorial

Circuit Diagram of this project

Circuit Diagram

Code of this project

  
  #include <LiquidCrystal.h> //importing builtIn library for LCD

LiquidCrystal lcd(11,12,4,5,6,7);      //setting pins for LCD
int tempPin = A5;     //the output pin of (LM35) temperature sensor
int relay1 = 9;       // intializing 
int relay2 = 8;
float temp;
float tempMax = 40;     //maximum temperature when buzzer will start
float tempMin = 20;   //minimum temperature when buzzer will start
void setup() {
  Serial.begin(9600);     //start Serial Monitor
 lcd.print("Waqas Farooq");
  delay(500); // adding delay
  lcd.clear();  // to make lcd display clear to show nothing
  delay(500); // again delay
  pinMode(relay1, OUTPUT);  // using pinMode to Assign pin as output
  pinMode(tempPin, INPUT);  // pinMode is assign as input from Temperature sensor
   pinMode(relay2, OUTPUT);   // using pinMode to Assign pin as output
  pinMode(tempPin, INPUT);// pinMode is assign as input from Temperature sensor
  lcd.begin(16, 2); // type of lcd is used here is Liquid Crystal LCD 1602
  
}

void loop() {
  temp = readTemp();    // here we are reading temperature from Sensor

  Serial.println(temp);    
  if (temp > tempMax) // setting parameters for maximum temperature
  {
    lcd.print("FAN ON ");  // to display Massage on LCD    
    lcd.print(temp);            // to display the current temperature status
    lcd.print("C");          // print the temperature in Centigrades
    digitalWrite(relay1, HIGH);      // to set 
  } else {
    digitalWrite(relay1, LOW);     
    lcd.print("TEMP: ");
    lcd.print(temp);      
    lcd.print("C ");
  }
  delay(1000);
  lcd.clear();
// new lines
if (temp < tempMin) // setting parameters for minimum temperature
{
    lcd.print("HEATER ON ");      
    lcd.print(temp);            
    lcd.print("C");
    digitalWrite(relay2, HIGH);      
  } else {
    digitalWrite(relay2, LOW);     
    lcd.print("TEMP: ");
    lcd.print(temp);      
    lcd.print("C ");
  }
  delay(1000);
  lcd.clear();

}

float readTemp() {    
  temp = analogRead(tempPin);
  return (temp * 0.48828125);
  
}

Arduino Tutorial Interfacing Two Stepper Motor using an Arduino, and Joystick

Posted by: Waqas Farooq August 30, 2021

Control a Two Stepper Motor using an Arduino, a Joystick - Tutorial

Circuit Diagram of this project

Code of this project

#include <Stepper.h>

const int stepsPerRevolution = 64;  // change this to fit the number of steps per revolution
// for your motor

                                         
// initialize the stepper library for both steppers:
Stepper small_stepper(stepsPerRevolution, 8,10,9,11);  
Stepper small_stepper2(stepsPerRevolution, 3,5,4,6); 

void setup() {

  // set the speed of the motors 
  small_stepper.setSpeed(300);    // set first stepper speed
  small_stepper2.setSpeed(300);   // set second stepper speed
}


void loop() {
 
  int sensorReading = analogRead(A0); // read value from joystick X-axis

  if (sensorReading < 490) { small_stepper.step(1); }   // step left
  if (sensorReading > 540) { small_stepper.step(-1); }  // step right
 
 int sensorReading2 = analogRead(A1); // read value from joystick Y-axis

  if (sensorReading2 < 490) { small_stepper2.step(1); } // step forward
  if (sensorReading2 > 540) { small_stepper2.step(-1); } // step backward
  
 }

check this project if you are interested How to make Arduino based clock

DHT11 Temperature & Humidity sensor with Arduino - Tutorial

Posted by: Waqas Farooq August 30, 2021

DHT11 Temperature & Humidity sensor with Arduino - Tutorial

Hello Guys in this tutorial you will learn how you can connect DHT11 humidity and temperature sensor with arduino. follow this link given below to get schematic and code of this project. I hope you like this video and subscribe my channel

Schematic of this project

Code of this project //#include <LiquidCrystal.h> #include <dht.h> //LiquidCrystal lcd (13,12,11,10,9,8); #define dht_apin A0 // Analog Pin sensor is connected to dht DHT; void setup(){ Serial.begin(9600); delay(500);//Delay to let system boot Serial.println("DHT11 Humidity & temperature Sensor\n\n"); delay(500);//Wait before accessing Sensor //lcd.begin(16,2); }//end "setup()" void loop(){ //Start of Program DHT.read11(dht_apin); Serial.print("Current humidity = "); Serial.print(DHT.humidity); Serial.print("% "); Serial.print("temperature = "); Serial.print(DHT.temperature); Serial.println("C "); // lcd.setCursor(0, 0); // lcd.print("Humidity="); // lcd.print(DHT.humidity); // lcd.print("% "); // lcd.setCursor(0, 1); // lcd.print("Temperat="); // lcd.print(DHT.temperature); // lcd.println("C "); delay(5000);//Wait 5 seconds before accessing sensor again. //Fastest should be once every two seconds. }// end loop(<textarea/> </div><br /> </span></span></span></h2>

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Flex Sensor - | Interfacing Flex sensor With Arduino and control Servo Motor

Posted by: Waqas Farooq July 30, 2021

Flex Sensor - | Interfacing Flex sensor With Arduino and control Servo Motor

in this tutorial you will learn about the interfacing of flex sensor with Arduino and control LED and servo motor it's a very quick tutorial and I hope you will like it.

Flex Sensor

Flex Sensor basically also known as bend sensor and what happen when you bend it, it works in the principle of capacitance and resistivity but some pressure exerted on the surface it's resistance will decrease and when you release it its resistance becomes higher,

Circuit Diagram of flex sensor with Arduino and Servo

Circuit Diagram

Code of this above Schematic

#include <Servo.h> Servo myServo; const int flexPin = A0; void setup() { myServo.attach(11); } void loop() { int flexValue; int servoPosition; flexValue = analogRead(flexPin); servoPosition = map(flexValue, 800, 900, 0, 180); servoPosition = constrain(servoPosition, 0, 180); myServo.write(servoPosition); delay(20); }

Circuit Diagram of flex sensor with Arduino and LED

Circuit Diagram

Code of this above Circuit Diagram

const int flexPin = A0; const int ledPin = 8; void setup() { Serial.begin(9600); pinMode(ledPin,OUTPUT); } void loop() { int flexValue; flexValue = analogRead(flexPin); Serial.print("sensor: "); Serial.println(flexValue); if(flexValue>890) digitalWrite(ledPin,HIGH); else digitalWrite(ledPin,LOW); delay(20); }

Motions Sensor Detection Alarm Arduino Tutor

Posted by: Waqas Farooq April 16, 2021

In this post you are going learn how to make motion sensor alarm read this post and check the video and circuit diagram and code is also given below

Video of this project

Circuit Diagram of this project

Code of this project

  
#include <Servo.h>

// constants won't change
const int TRIG_PIN  = 6;  // Arduino pin connected to Ultrasonic Sensor's TRIG pin
const int ECHO_PIN  = 7;  // Arduino pin connected to Ultrasonic Sensor's ECHO pin
const int SERVO_PIN = 9; // Arduino pin connected to Servo Motor's pin
const int DISTANCE_THRESHOLD = 20; // centimeters

Servo servo; // create servo object to control a servo

// variables will change:
float duration_us, distance_cm;

void setup() {
  Serial.begin (9600);       // initialize serial port
  pinMode(TRIG_PIN, OUTPUT); // set arduino pin to output mode
  pinMode(ECHO_PIN, INPUT);  // set arduino pin to input mode
  servo.attach(SERVO_PIN);   // attaches the servo on pin 9 to the servo object
  servo.write(0);
}

void loop() {
  // generate 10-microsecond pulse to TRIG pin
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  // measure duration of pulse from ECHO pin
  duration_us = pulseIn(ECHO_PIN, HIGH);
  // calculate the distance
  distance_cm = 0.017 * duration_us;

  if(distance_cm < DISTANCE_THRESHOLD)
    servo.write(90); // rotate servo motor to 90 degree
  else
    servo.write(0);  // rotate servo motor to 0 degree

  // print the value to Serial Monitor
  Serial.print("distance: ");
  Serial.print(distance_cm);
  Serial.println(" cm");

  delay(500);
}

Connect Multiple Ultrasonic Sensor with Arduino

Posted by: Waqas Farooq April 15, 2021

Interfacing of Multiple Ultrasonic Sensor with Arduino

HI in this tutorial you are going to learn how to interface multiple sensors with Arduino. I will be doing simulation on website called tinker CAD, It is really good website for startup learners

Link:https://www.tinkercad.com

Circuit Diagram of this project

Tutorial Video of this project

Code of this project

  
#include <LiquidCrystal.h>
LiquidCrystal lcd(8,9,10,11,12,13);
#define trigPin1 A1
#define echoPin1 A0
#define trigPin2 A3
#define echoPin2 A2
#define trigPin3 A5
#define echoPin3 A4
int ALARM = 7;
long duration, distance, FIRSTSensor,SECONDSensor,THIRDSensor;
void setup()
{
lcd.begin(16,2);
Serial.begin (9600);
lcd.clear(); 
pinMode(trigPin1, OUTPUT);
pinMode(echoPin1, INPUT);
pinMode(trigPin2, OUTPUT);
pinMode(echoPin2, INPUT);
pinMode(trigPin3, OUTPUT);
pinMode(echoPin3, INPUT);
pinMode(ALARM, OUTPUT);
digitalWrite(ALARM, LOW);
 lcd.setCursor(0,0);lcd.print("Interfacing ");
lcd.setCursor(0,1);lcd.print("of Multiple ");
delay(3000);lcd.clear();  
lcd.setCursor(0,0);lcd.print("3 HC - SR04 ");
lcd.setCursor(0,1);lcd.print("Ultrasonic  ");
delay(3000);lcd.clear();
lcd.setCursor(0,0);lcd.print("SensorS With ");
lcd.setCursor(0,1);lcd.print("Arduino ");
delay(3000);lcd.clear();
}

void loop() 
{
/////////////////////////////////////////////////////// 
SonarSensor(trigPin1, echoPin1);
FIRSTSensor = distance;
SonarSensor(trigPin2, echoPin2);
SECONDSensor = distance;
SonarSensor(trigPin3, echoPin3);
THIRDSensor = distance;
/////////////////////////////////////////////////////////////
digitalWrite(ALARM, LOW);
//////////////////////////////////////////////////////////////////////////////////////
Serial.print("S1:");Serial.println(FIRSTSensor); delayMicroseconds(10);
Serial.print("S2:");Serial.println(SECONDSensor);delayMicroseconds(10);
Serial.print("S3:");Serial.println(THIRDSensor); delayMicroseconds(10);
///////////////////////////////////////////////////////////////////////////////////////
lcd.setCursor(0,0);lcd.print("S1:");lcd.setCursor(4,0);lcd.print(FIRSTSensor);
lcd.setCursor(9,0);lcd.print("S2:");lcd.setCursor(12,0);lcd.print(SECONDSensor);
lcd.setCursor(0,1);lcd.print("S3:");lcd.setCursor(4,1);lcd.print(THIRDSensor);
delay(1000);lcd.clear();
///////////////////////////////////////////////////////
if((FIRSTSensor >= 10) & (FIRSTSensor <= 50)) 
{digitalWrite(ALARM, HIGH);delay(500);}
///////////////////////////////////////////////////////
if((SECONDSensor >= 10) & (SECONDSensor <= 50)) 
{digitalWrite(ALARM, HIGH);delay(500);}
///////////////////////////////////////////////////////
if((THIRDSensor >= 10) & (THIRDSensor <= 50)) 
{digitalWrite(ALARM, HIGH);delay(500);}
///////////////////////////////////////////////////////
}
/////////////////////////////////////////////////////////////////////////////////
void SonarSensor(int trigPin,int echoPin)
{
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
}

How to Control Servo Motor with Arduino | Arduino Tutorial

Posted by: Waqas Farooq April 09, 2021

HI guys 
in this tutorial you will be learning how you can control servo motor with ultrasonic sensor using Arduino board 

Watch the Video

Circuit Diagram

Here is the code of this project

  
  
  
#include <Servo.h>

// constants won't change
const int TRIG_PIN  = 6;  // Arduino pin connected to Ultrasonic Sensor's TRIG pin
const int ECHO_PIN  = 7;  // Arduino pin connected to Ultrasonic Sensor's ECHO pin
const int SERVO_PIN = 9; // Arduino pin connected to Servo Motor's pin
const int DISTANCE_THRESHOLD = 20; // centimeters

Servo servo; // create servo object to control a servo

// variables will change:
float duration_us, distance_cm;

void setup() {
  Serial.begin (9600);       // initialize serial port
  pinMode(TRIG_PIN, OUTPUT); // set arduino pin to output mode
  pinMode(ECHO_PIN, INPUT);  // set arduino pin to input mode
  servo.attach(SERVO_PIN);   // attaches the servo on pin 9 to the servo object
  servo.write(0);
}

void loop() {
  // generate 10-microsecond pulse to TRIG pin
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  // measure duration of pulse from ECHO pin
  duration_us = pulseIn(ECHO_PIN, HIGH);
  // calculate the distance
  distance_cm = 0.017 * duration_us;

  if(distance_cm < DISTANCE_THRESHOLD)
    servo.write(90); // rotate servo motor to 90 degree
  else
    servo.write(0);  // rotate servo motor to 0 degree

  // print the value to Serial Monitor
  Serial.print("distance: ");
  Serial.print(distance_cm);
  Serial.println(" cm");

  delay(500);
}
  

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