Tag: Node MCU

Arduino MEGA2560வை பயன்படுத்தி 2 DC மோட்டார்கள் மற்றும் 2 LED-களை ஒரே நேரத்தில் NodeMCU ஐ உபயோகப்படுத்தி கட்டுப்படுத்துவது.

Required Components

1. Node MCU -1 no
2. L298N Motor Driver -1 no
3. 9V Battery -1 no
4. 5V DC Motor -2 no
5. Motor wheel -2 no
6. Cable -1 no
7. Jumper Wires -7 no

Circuit

Steps

1. நாம் பயன்படுத்தும் உபகரணங்கள் சரியாக வேலை செய்கிறதா என்பதை உறுதி செய்து கொள்ளவும்.
2. L298N Motor Driver உடன் 9V Battery ஐ கவனமாக இணைக்க வேண்டும்.
3. L298N Motor Driver ENA, IN1, IN2, IN3, IN4, ENB பின்களை Node MCU D2, D0, D1, D7, D6, D5 உடன் இணைக்க வேண்டும்.
4. L298N Motor Driver gnd உடன் Node MCU gnd ஐ இணைக்க வேண்டும்.
5. L298N Motor Driver OUTPUT பின்களுடன் DC மோட்டார் OUTPUT பின்களை இணைக்க வேண்டும்.
6. 2 LED Cathodes(+) & Anode (-) பின்களை Arduino MEGA 2560 Board D3, D4 பின்கள் & gnd உடன் இணைக்க வேண்டும்.
7. Node MCU உடன் Power ஐ இணைக்க வேண்டும்.
8. Arduino program ஐ சரி பார்க்க வேண்டும்.
9. மின்சுற்றை சரி பார்க்க வேண்டும்.
10. Arduino program ஐ ரன் செய்ய வேண்டும்.

Arduino Program

#include <ESP8266WiFi.h>
const char* ssid = "*****";
const char* password = "********";
int motor1pin1 = 16; //D0
int motor1pin2 = 5; //D1
int enPin1 = 4; //D2
int motor2pin1 = 13; //D7
int motor2pin2 = 12; //D6
int enPin2 = 14;//D5

int led1 = 0; //D3
int led2 = 2; //D4
WiFiServer server(80);

void setup() 
{
  Serial.begin(115200);
  delay(10);
  pinMode(motor1pin1, OUTPUT);
  pinMode(motor1pin2, OUTPUT);
  pinMode(enPin1, OUTPUT);
  digitalWrite(enPin1, HIGH);
  pinMode(motor2pin1, OUTPUT);
  pinMode(motor2pin2, OUTPUT);
  pinMode(enPin2, OUTPUT);
  digitalWrite(enPin2, HIGH);
  
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  server.begin();
  Serial.println("Server started");
  Serial.print("Use this URL to connect: ");
  Serial.print("http://");
  Serial.print(WiFi.localIP());
  Serial.println("/");
}

void loop() 
{
  WiFiClient client = server.available();
  if (!client) {
    return;
  }
  Serial.println("new client");
  while(!client.available()){
    delay(1);
  }
  String request = client.readStringUntil('\r');
  Serial.println(request);
  client.flush();
  int value,value1 = LOW,value2 = LOW,value3 = LOW,value4 = LOW;
  if (request.indexOf("/MotorForward") != -1)
  {
    digitalWrite(motor1pin1, HIGH);
    digitalWrite(motor1pin2, LOW);
    digitalWrite(motor2pin1, HIGH);
    digitalWrite(motor2pin2, LOW);
    delay(1000);
    value1 = HIGH;
    value2 = LOW;
    value3 = HIGH;
    value4 = LOW;
  }
  if (request.indexOf("/MotorBackward") != -1)
  {
    digitalWrite(motor1pin1, LOW);
    digitalWrite(motor1pin2, HIGH);
    digitalWrite(motor2pin1, LOW);
    digitalWrite(motor2pin2, HIGH);
    delay(1000);
    value1 = LOW;
    value2 = HIGH;
    value3 = LOW;
    value4 = HIGH;
  }
  if (request.indexOf("/MotorLeft") != -1)
  {
    digitalWrite(motor1pin1, LOW);
    digitalWrite(motor1pin2, HIGH);
    digitalWrite(motor2pin1, HIGH);
    digitalWrite(motor2pin2, LOW);
    delay(1000);
    value1 = LOW;
    value2 = HIGH;
    value3 = HIGH;
    value4 = LOW;
  }
  if (request.indexOf("/MotorRight") != -1)
  {
    digitalWrite(motor1pin1, HIGH);
    digitalWrite(motor1pin2, LOW);
    digitalWrite(motor2pin1, LOW);
    digitalWrite(motor2pin2, HIGH);
    delay(1000);
    value1 = HIGH;
    value2 = LOW;
    value3 = LOW;
    value4 = HIGH;
  }
  if (request.indexOf("/MotorStop") != -1)
  {
    digitalWrite(motor1pin1, LOW);
    digitalWrite(motor1pin2, LOW);
    digitalWrite(motor2pin1, LOW);
    digitalWrite(motor2pin2, LOW);
    delay(1000);
    value1 = LOW;
    value2 = LOW;
    value3 = LOW;
    value4 = LOW;
  }
  
  if (request.indexOf("/LedOn") != -1)
  {
    digitalWrite(led1,HIGH);
    digitalWrite(led2,HIGH);
    delay(2000);
    value = HIGH;
  }
  
  if (request.indexOf("/LedOn") != -1)
  {
    digitalWrite(led1,LOW);
    digitalWrite(led2,LOW);
    delay(2000);
    value = LOW;
  }
  client.println("HTTP/1.1 200 OK");
  client.println("Content-Type: text/html");
  client.println(""); //  do not forget this one
  client.println("<!DOCTYPE HTML>");
  client.println("<html>");
  client.print("motor is now: ");
  
  if(value1 == HIGH && value2 == LOW && value3 == HIGH && value4 == LOW ) {
    client.print("Forward");
  }
  else if(value1 == LOW && value2 == HIGH && value3 == LOW && value4 == HIGH  ) {
    client.print("Backward");
  }
  else if(value1 == LOW && value2 == HIGH && value3 == HIGH && value4 == LOW  ) {
    client.print("Left");
  }
  else if(value1 == HIGH && value2 == LOW && value3 == LOW && value4 == HIGH  ) {
    client.print("Right");
  }
  else if(value1 == LOW && value2 == LOW && value3 == LOW && value4 == LOW  ) {
    client.print("Stop");
  }
  else if( value = HIGH) {
    client.print("LedOn");
  }
  else if( value = LOW) {
    client.print("LedOff");
  }
  client.println("<br><br>");
  client.println("<a href=\"/MotorForward\"\"><button>Forward </button></a>");
  client.println("<a href=\"/MotorBackward\"\"><button>Backward </button></a><br />");
  client.println("<a href=\"/MotorLeft\"\"><button>Left </button></a>");
  client.println("<a href=\"/MotorRight\"\"><button>Right </button></a><br/>");
  client.println("<a href=\"/MotorStop\"\"><button>Stop </button></a>");
  client.println("<a href=\"/LedOn\"\"><button>LedOn </button></a>");
  client.println("<a href=\"/LedOff\"\"><button>LedOff </button></a>");
  client.println("</html>");
  delay(1);
  Serial.println("Client disonnected");
  Serial.println("");
}

Projects

1. DIWA Robot