Motor Control Using NodeMCU

Control DC motors using a web browser.

Nov 30, 2019

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20070 views

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3 respects

communication

internet of things

Devices & Components

Dual H-Bridge motor drivers L293D

Jumper wires (generic)

Breadboard (generic)

DC Motor, Miniature

NodeMCU ESP8266 Breakout Board

Software & Tools

Arduino IDE

Project description

Code

Source Code

arduino

1#include <ESP8266WiFi.h>
2#include <WiFiClient.h>
3#include <ESP8266WebServer.h>
4
5//  Replace with your network credentials
6const char* ssid = "Enter the name of  the Wifi router";         
7const char* password = "Enter Password of the router";
8
9ESP8266WebServer  server(80);   //instantiate server at port 80 (http port)
10
11String page = "";  //For the Web Server
12String page2="";  //For updating Status of motor 1
13String  page3="";  //For updating status of motor 2
14void setup(void)
15{
16  //the  HTML of the web page
17  page = "<center><h1>Motor Control Web Server</h1><body><p><a  href=\\"Forward\\"><button>Forward</button></a><p><a href=\\"Backward\\"><button>Backward</button></a></p><p><a  href =\\"Left\\"><button>Left</button></a>&nbsp;<a href=\\"Stop\\"><button>Stop</button></a><a  href=\\"Right\\"><button>Right</button></a></p></body></center>";
18  pinMode(D5,  OUTPUT);   // inputs for motor 1
19  pinMode(D6,OUTPUT);
20  pinMode(D7,OUTPUT);    // inputs for motor 2 
21  pinMode(D8,OUTPUT);
22  pinMode(LED_BUILTIN,OUTPUT);  // For status of WiFi connection
23  delay(1000);
24  Serial.begin(115200);     
25  WiFi.begin(ssid, password); //begin WiFi connection
26  Serial.println("");
27
28  // Wait for connection
29  while (WiFi.status() != WL_CONNECTED) {
30    delay(500);
31    Serial.print(".");
32  }
33  digitalWrite(LED_BUILTIN,HIGH);     // when  connected turns high
34  Serial.println("");
35  Serial.print("Connected to  ");   
36  Serial.println(ssid);
37  Serial.print("IP address: ");
38  Serial.println(WiFi.localIP());   //provides IP address
39   server.on("/", [](){
40    server.send(200, "text/html",  page+page2);
41  });
42  server.on("/Forward",Forward);
43  server.on("/Backward",Backward);
44  server.on("/Left",Left);
45  server.on("/Right",Right);
46
47  server.on("/Stop",[](){                              // turns all the motor input pins low
48   page2="<center><p>  motor 1 Status : Off</p></center>";
49   page3="<center><p> motor 2 Status :  off</p></center>";
50  server.send(200,"text/html",page+page2+page3);
51    digitalWrite(D5,LOW);
52    digitalWrite(D6,LOW);
53    digitalWrite(D7,LOW);
54    digitalWrite(D8,LOW);
55    delay(200);
56  });
57  server.begin();
58  Serial.println("Web server started!");
59}
60void  loop(void)
61{  
62     server.handleClient();
63}
64
65 void Forward() 
66  {
67    digitalWrite(D5,HIGH);
68    digitalWrite(D6,LOW);
69    page2="<center><p>  motor 1 Status : Forward </p></center>";
70    server.send(200,"text/html",  page+page2+page3);
71    delay(200);
72  }
73  void Left()
74  {
75    page3="<center><p>  motor 2 Status : Left</p></center>";
76    server.send(200,"text/html",page+page2+page3);
77    digitalWrite(D7,HIGH);
78    digitalWrite(D8,LOW);
79    delay(200);
80  }
81  void Right()
82   { 
83    page3="<center><p> motor 2 Status : Right</p></center>";
84    server.send(200,"text/html",page+page2+page3);
85    digitalWrite(D8,HIGH);
86    digitalWrite(D7,LOW);
87    delay(200);
88  }
89   void Backward()
90  {
91    page2="<center><p> motor 1 Status : Backward</p></center>";
92    server.send(200,  "text/html", page+page2+page3);
93    digitalWrite(D6, HIGH);
94    digitalWrite(D5,LOW);
95    delay(200); 
96  }

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

//  Replace with your network credentials
const char* ssid = "Enter the name of  the Wifi router";         
const char* password = "Enter Password of the router";

ESP8266WebServer  server(80);   //instantiate server at port 80 (http port)

String page = "";  //For the Web Server
String page2="";  //For updating Status of motor 1
String  page3="";  //For updating status of motor 2
void setup(void)
{
  //the  HTML of the web page
  page = "<center><h1>Motor Control Web Server</h1><body><p><a  href=\\"Forward\\"><button>Forward</button></a><p><a href=\\"Backward\\"><button>Backward</button></a></p><p><a  href =\\"Left\\"><button>Left</button></a>&nbsp;<a href=\\"Stop\\"><button>Stop</button></a><a  href=\\"Right\\"><button>Right</button></a></p></body></center>";
  pinMode(D5,  OUTPUT);   // inputs for motor 1
  pinMode(D6,OUTPUT);
  pinMode(D7,OUTPUT);    // inputs for motor 2 
  pinMode(D8,OUTPUT);
  pinMode(LED_BUILTIN,OUTPUT);  // For status of WiFi connection
  delay(1000);
  Serial.begin(115200);     
  WiFi.begin(ssid, password); //begin WiFi connection
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  digitalWrite(LED_BUILTIN,HIGH);     // when  connected turns high
  Serial.println("");
  Serial.print("Connected to  ");   
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());   //provides IP address
   server.on("/", [](){
    server.send(200, "text/html",  page+page2);
  });
  server.on("/Forward",Forward);
  server.on("/Backward",Backward);
  server.on("/Left",Left);
  server.on("/Right",Right);

  server.on("/Stop",[](){                              // turns all the motor input pins low
   page2="<center><p>  motor 1 Status : Off</p></center>";
   page3="<center><p> motor 2 Status :  off</p></center>";
  server.send(200,"text/html",page+page2+page3);
    digitalWrite(D5,LOW);
    digitalWrite(D6,LOW);
    digitalWrite(D7,LOW);
    digitalWrite(D8,LOW);
    delay(200);
  });
  server.begin();
  Serial.println("Web server started!");
}
void  loop(void)
{  
     server.handleClient();
}

 void Forward() 
  {
    digitalWrite(D5,HIGH);
    digitalWrite(D6,LOW);
    page2="<center><p>  motor 1 Status : Forward </p></center>";
    server.send(200,"text/html",  page+page2+page3);
    delay(200);
  }
  void Left()
  {
    page3="<center><p>  motor 2 Status : Left</p></center>";
    server.send(200,"text/html",page+page2+page3);
    digitalWrite(D7,HIGH);
    digitalWrite(D8,LOW);
    delay(200);
  }
  void Right()
   { 
    page3="<center><p> motor 2 Status : Right</p></center>";
    server.send(200,"text/html",page+page2+page3);
    digitalWrite(D8,HIGH);
    digitalWrite(D7,LOW);
    delay(200);
  }
   void Backward()
  {
    page2="<center><p> motor 1 Status : Backward</p></center>";
    server.send(200,  "text/html", page+page2+page3);
    digitalWrite(D6, HIGH);
    digitalWrite(D5,LOW);
    delay(200); 
  }

Source Code

arduino

1#include <ESP8266WiFi.h>
2#include <WiFiClient.h>
3#include <ESP8266WebServer.h>
4
5//
6  Replace with your network credentials
7const char* ssid = "Enter the name of
8  the Wifi router";         
9const char* password = "Enter Password of the router";
10
11ESP8266WebServer
12  server(80);   //instantiate server at port 80 (http port)
13
14String page = "";
15  //For the Web Server
16String page2="";  //For updating Status of motor 1
17String
18  page3="";  //For updating status of motor 2
19void setup(void)
20{
21  //the
22  HTML of the web page
23  page = "<center><h1>Motor Control Web Server</h1><body><p><a
24  href=\\"Forward\\"><button>Forward</button></a><p><a href=\\"Backward\\"><button>Backward</button></a></p><p><a
25  href =\\"Left\\"><button>Left</button></a>&nbsp;<a href=\\"Stop\\"><button>Stop</button></a><a
26  href=\\"Right\\"><button>Right</button></a></p></body></center>";
27  pinMode(D5,
28  OUTPUT);   // inputs for motor 1
29  pinMode(D6,OUTPUT);
30  pinMode(D7,OUTPUT);
31    // inputs for motor 2 
32  pinMode(D8,OUTPUT);
33  pinMode(LED_BUILTIN,OUTPUT);
34  // For status of WiFi connection
35  delay(1000);
36  Serial.begin(115200);
37     
38  WiFi.begin(ssid, password); //begin WiFi connection
39  Serial.println("");
40
41
42  // Wait for connection
43  while (WiFi.status() != WL_CONNECTED) {
44    delay(500);
45
46    Serial.print(".");
47  }
48  digitalWrite(LED_BUILTIN,HIGH);     // when
49  connected turns high
50  Serial.println("");
51  Serial.print("Connected to
52  ");   
53  Serial.println(ssid);
54  Serial.print("IP address: ");
55  Serial.println(WiFi.localIP());
56   //provides IP address
57   server.on("/", [](){
58    server.send(200, "text/html",
59  page+page2);
60  });
61  server.on("/Forward",Forward);
62  server.on("/Backward",Backward);
63
64  server.on("/Left",Left);
65  server.on("/Right",Right);
66
67  server.on("/Stop",[](){
68                              // turns all the motor input pins low
69   page2="<center><p>
70  motor 1 Status : Off</p></center>";
71   page3="<center><p> motor 2 Status :
72  off</p></center>";
73  server.send(200,"text/html",page+page2+page3);
74    digitalWrite(D5,LOW);
75
76    digitalWrite(D6,LOW);
77    digitalWrite(D7,LOW);
78    digitalWrite(D8,LOW);
79
80    delay(200);
81  });
82  server.begin();
83  Serial.println("Web server started!");
84}
85void
86  loop(void)
87{  
88     server.handleClient();
89}
90
91 void Forward() 
92
93  {
94    digitalWrite(D5,HIGH);
95    digitalWrite(D6,LOW);
96    page2="<center><p>
97  motor 1 Status : Forward </p></center>";
98    server.send(200,"text/html",
99  page+page2+page3);
100    delay(200);
101  }
102  void Left()
103  {
104    page3="<center><p>
105  motor 2 Status : Left</p></center>";
106    server.send(200,"text/html",page+page2+page3);
107
108    digitalWrite(D7,HIGH);
109    digitalWrite(D8,LOW);
110    delay(200);
111  }
112
113  void Right()
114   { 
115    page3="<center><p> motor 2 Status : Right</p></center>";
116
117    server.send(200,"text/html",page+page2+page3);
118    digitalWrite(D8,HIGH);
119
120    digitalWrite(D7,LOW);
121    delay(200);
122  }
123   void Backward()
124  {
125
126    page2="<center><p> motor 1 Status : Backward</p></center>";
127    server.send(200,
128  "text/html", page+page2+page3);
129    digitalWrite(D6, HIGH);
130    digitalWrite(D5,LOW);
131
132    delay(200); 
133  }

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

//
  Replace with your network credentials
const char* ssid = "Enter the name of
  the Wifi router";         
const char* password = "Enter Password of the router";

ESP8266WebServer
  server(80);   //instantiate server at port 80 (http port)

String page = "";
  //For the Web Server
String page2="";  //For updating Status of motor 1
String
  page3="";  //For updating status of motor 2
void setup(void)
{
  //the
  HTML of the web page
  page = "<center><h1>Motor Control Web Server</h1><body><p><a
  href=\\"Forward\\"><button>Forward</button></a><p><a href=\\"Backward\\"><button>Backward</button></a></p><p><a
  href =\\"Left\\"><button>Left</button></a>&nbsp;<a href=\\"Stop\\"><button>Stop</button></a><a
  href=\\"Right\\"><button>Right</button></a></p></body></center>";
  pinMode(D5,
  OUTPUT);   // inputs for motor 1
  pinMode(D6,OUTPUT);
  pinMode(D7,OUTPUT);
    // inputs for motor 2 
  pinMode(D8,OUTPUT);
  pinMode(LED_BUILTIN,OUTPUT);
  // For status of WiFi connection
  delay(1000);
  Serial.begin(115200);
     
  WiFi.begin(ssid, password); //begin WiFi connection
  Serial.println("");


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

    Serial.print(".");
  }
  digitalWrite(LED_BUILTIN,HIGH);     // when
  connected turns high
  Serial.println("");
  Serial.print("Connected to
  ");   
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
   //provides IP address
   server.on("/", [](){
    server.send(200, "text/html",
  page+page2);
  });
  server.on("/Forward",Forward);
  server.on("/Backward",Backward);

  server.on("/Left",Left);
  server.on("/Right",Right);

  server.on("/Stop",[](){
                              // turns all the motor input pins low
   page2="<center><p>
  motor 1 Status : Off</p></center>";
   page3="<center><p> motor 2 Status :
  off</p></center>";
  server.send(200,"text/html",page+page2+page3);
    digitalWrite(D5,LOW);

    digitalWrite(D6,LOW);
    digitalWrite(D7,LOW);
    digitalWrite(D8,LOW);

    delay(200);
  });
  server.begin();
  Serial.println("Web server started!");
}
void
  loop(void)
{  
     server.handleClient();
}

 void Forward() 

  {
    digitalWrite(D5,HIGH);
    digitalWrite(D6,LOW);
    page2="<center><p>
  motor 1 Status : Forward </p></center>";
    server.send(200,"text/html",
  page+page2+page3);
    delay(200);
  }
  void Left()
  {
    page3="<center><p>
  motor 2 Status : Left</p></center>";
    server.send(200,"text/html",page+page2+page3);

    digitalWrite(D7,HIGH);
    digitalWrite(D8,LOW);
    delay(200);
  }

  void Right()
   { 
    page3="<center><p> motor 2 Status : Right</p></center>";

    server.send(200,"text/html",page+page2+page3);
    digitalWrite(D8,HIGH);

    digitalWrite(D7,LOW);
    delay(200);
  }
   void Backward()
  {

    page2="<center><p> motor 1 Status : Backward</p></center>";
    server.send(200,
  "text/html", page+page2+page3);
    digitalWrite(D6, HIGH);
    digitalWrite(D5,LOW);

    delay(200); 
  }

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