Wi-Fi Controlled Rover

The motion of robot controlling via internet is one of the easy means as it requires the user to access the designated webpage to guide it.

Feb 4, 2020

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Components and supplies

Nodemcu Motor Shield

DC Motor

Apps and platforms

\t WiFi Robot Controller

Project description

Code

Code 1

c_cpp

Output-2 Output-2 Output-1 After the connection you will copy and paste this code in Arduino IDE. Than go to the mobile phone and connect with wifi (“My_Robot”) and password(“iamnotarobot”).Than open the app in your mobile phone and set the IP address is mention in your code .If you press forward button the left motor move forward direction and the right motor move backward direction .If you press the left button the left motor move forward direction and the right motor move backward direction and so on.And you will see that all the given command it will show in status button of the app. If you press the accelerate controller button, the movement of your mobile phone will rotate the connected motors. The motors will move in left, right, backward, forward direction according to the movements of your mobile phone. The other buttons will not work, when the accelerate Controller is ON.

1/* Create a WiFi access point and provide a web server on it to receive  command to control motor. */
2
3#include <ESP8266WiFi.h>
4#include <WiFiClient.h>  
5#include <ESP8266WebServer.h>
6
7/* Set these to your desired credentials.  */
8const char *ssid = "My_Robot";
9const char *password = "iamnotarobot";
10
11ESP8266WebServer  server(80);
12
13/* Just a little test message.  Go to http://192.168.4.1 in a  web browser
14 * connected to this access point to see it.
15 */
16void handleRoot()  {
17  server.send(200, "text/plain", "hello from Robot!");
18}
19
20void  motor_forward(){
21    digitalWrite(16, 1);
22    digitalWrite(5, 0);
23    digitalWrite(4,  1);
24    digitalWrite(0, 0);
25  }
26void motor_stop(){
27    digitalWrite(16,  0);
28    digitalWrite(5, 0);
29    digitalWrite(4, 0);
30    digitalWrite(0,  0);
31  }
32void motor_back(){
33    digitalWrite(16, 0);
34    digitalWrite(5,  1);
35    digitalWrite(4, 0);
36    digitalWrite(0, 1);
37  }
38
39void motor_left(){
40    digitalWrite(16, 0);
41    digitalWrite(5, 1);
42    digitalWrite(4, 1);
43    digitalWrite(0, 0);
44  }
45void motor_right(){
46    digitalWrite(16, 1);
47    digitalWrite(5, 0);
48    digitalWrite(4, 0);
49    digitalWrite(0, 1);
50  }
51
52
53void setup() {
54  // prepare Motor Output Pins
55  pinMode(16,  OUTPUT);
56  digitalWrite(16, 0);
57  
58  // prepare GPIO5 relay 1
59  pinMode(5,  OUTPUT);
60  digitalWrite(5, 0);
61  
62  pinMode(4, OUTPUT);
63  digitalWrite(4,  0);
64  
65  pinMode(0, OUTPUT);
66  digitalWrite(0, 0);
67
68  
69	delay(1000);
70	Serial.begin(115200);
71	Serial.println();
72	Serial.print("Configuring  access point...");
73	/* You can remove the password parameter if you want the  AP to be open. */
74	WiFi.softAP(ssid, password);
75
76	IPAddress myIP = WiFi.softAPIP();
77	Serial.print("AP  IP address: ");
78	Serial.println(myIP);
79
80 
81	server.on("/", handleRoot);
82  
83  server.on("/inline", []() {
84    server.send(200, "text/plain", "this  works as well");
85  });
86
87  server.on("/fw", []() {
88    motor_forward();
89    server.send(200, "text/plain", "Forward");
90  });
91  server.on("/bk",  []() {
92    motor_back();
93    server.send(200, "text/plain", "Back");
94  });
95
96  server.on("/st", []() {
97    motor_stop();
98    server.send(200,  "text/plain", "Stop");
99  });
100  server.on("/lt", []() {
101    motor_left();
102    server.send(200, "text/plain", "Left");
103  });
104  server.on("/rt",  []() {
105    motor_right();
106    server.send(200, "text/plain", "Right");
107  });
108
109	server.begin();
110	Serial.println("HTTP server started");
111
112
113  
114}
115
116void loop() {
117	server.handleClient();
118}

/* Create a WiFi access point and provide a web server on it to receive  command to control motor. */

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

/* Set these to your desired credentials.  */
const char *ssid = "My_Robot";
const char *password = "iamnotarobot";

ESP8266WebServer  server(80);

/* Just a little test message.  Go to http://192.168.4.1 in a  web browser
 * connected to this access point to see it.
 */
void handleRoot()  {
  server.send(200, "text/plain", "hello from Robot!");
}

void  motor_forward(){
    digitalWrite(16, 1);
    digitalWrite(5, 0);
    digitalWrite(4,  1);
    digitalWrite(0, 0);
  }
void motor_stop(){
    digitalWrite(16,  0);
    digitalWrite(5, 0);
    digitalWrite(4, 0);
    digitalWrite(0,  0);
  }
void motor_back(){
    digitalWrite(16, 0);
    digitalWrite(5,  1);
    digitalWrite(4, 0);
    digitalWrite(0, 1);
  }

void motor_left(){
    digitalWrite(16, 0);
    digitalWrite(5, 1);
    digitalWrite(4, 1);
    digitalWrite(0, 0);
  }
void motor_right(){
    digitalWrite(16, 1);
    digitalWrite(5, 0);
    digitalWrite(4, 0);
    digitalWrite(0, 1);
  }


void setup() {
  // prepare Motor Output Pins
  pinMode(16,  OUTPUT);
  digitalWrite(16, 0);
  
  // prepare GPIO5 relay 1
  pinMode(5,  OUTPUT);
  digitalWrite(5, 0);
  
  pinMode(4, OUTPUT);
  digitalWrite(4,  0);
  
  pinMode(0, OUTPUT);
  digitalWrite(0, 0);

  
	delay(1000);
	Serial.begin(115200);
	Serial.println();
	Serial.print("Configuring  access point...");
	/* You can remove the password parameter if you want the  AP to be open. */
	WiFi.softAP(ssid, password);

	IPAddress myIP = WiFi.softAPIP();
	Serial.print("AP  IP address: ");
	Serial.println(myIP);

 
	server.on("/", handleRoot);
  
  server.on("/inline", []() {
    server.send(200, "text/plain", "this  works as well");
  });

  server.on("/fw", []() {
    motor_forward();
    server.send(200, "text/plain", "Forward");
  });
  server.on("/bk",  []() {
    motor_back();
    server.send(200, "text/plain", "Back");
  });

  server.on("/st", []() {
    motor_stop();
    server.send(200,  "text/plain", "Stop");
  });
  server.on("/lt", []() {
    motor_left();
    server.send(200, "text/plain", "Left");
  });
  server.on("/rt",  []() {
    motor_right();
    server.send(200, "text/plain", "Right");
  });

	server.begin();
	Serial.println("HTTP server started");


  
}

void loop() {
	server.handleClient();
}

Code 2

c_cpp

Output-2 After the connection you will copy and paste this code in Arduino IDE. Write the correct ssid and password. Then upload the code. Open the serial monitor.Now, you are connected with your wifi and it display the IP address on serial monitor. Then open the app and set the IP address .If you press forward button the left motor will moves in forward direction and the right motor will moves in backward direction .If you press the backward button, then the right motor moves in forward direction and the left motor moves in backward direction and so on. And you will see that all the given command it will show in status button of the app. When you press the accelerate controller the button is on .The movement of your mobile phone will rotate the connected motors. Note:-When you open this app the mobile phone data connection is must be off

1#include <ESP8266WiFi.h>
2#include <WiFiClient.h>
3#include <ESP8266WebServer.h>
4#include  <ESP8266mDNS.h>
5
6const char* ssid = "your_network_ssid";
7const char*  password = "your_network_password";
8
9ESP8266WebServer server(80);
10
11void  handleRoot() {
12  server.send(200, "text/plain", "hello from Robot!");
13}
14
15void  motor_forward(){
16    digitalWrite(16, 1);
17    digitalWrite(5, 0);
18    digitalWrite(4,  1);
19    digitalWrite(0, 0);
20  }
21void motor_stop(){
22    digitalWrite(16,  0);
23    digitalWrite(5, 0);
24    digitalWrite(4, 0);
25    digitalWrite(0,  0);
26  }
27void motor_back(){
28    digitalWrite(16, 0);
29    digitalWrite(5,  1);
30    digitalWrite(4, 0);
31    digitalWrite(0, 1);
32  }
33
34void motor_left(){
35    digitalWrite(16, 0);
36    digitalWrite(5, 1);
37    digitalWrite(4, 1);
38    digitalWrite(0, 0);
39  }
40void motor_right(){
41    digitalWrite(16, 1);
42    digitalWrite(5, 0);
43    digitalWrite(4, 0);
44    digitalWrite(0, 1);
45  }
46
47void setup(void){
48
49  // prepare Motor Output Pins
50  pinMode(16,  OUTPUT);
51  digitalWrite(16, 0);
52  
53  // prepare GPIO5 relay 1
54  pinMode(5,  OUTPUT);
55  digitalWrite(5, 0);
56  
57  pinMode(4, OUTPUT);
58  digitalWrite(4,  0);
59  
60  pinMode(0, OUTPUT);
61  digitalWrite(0, 0);
62  
63  
64  Serial.begin(115200);
65  WiFi.begin(ssid, password);
66  Serial.println("");
67
68  // Wait for connection
69  while (WiFi.status() != WL_CONNECTED) {
70    delay(500);
71    Serial.print(".");
72  }
73  Serial.println("");
74  Serial.print("Connected to ");
75  Serial.println(ssid);
76  Serial.print("IP address: ");
77  Serial.println(WiFi.localIP());
78
79  if  (MDNS.begin("esp8266")) {
80    Serial.println("MDNS responder started");
81  }
82
83  server.on("/", handleRoot);
84
85  server.on("/fw", []() {
86    motor_forward();
87    server.send(200, "text/plain", "Forward");
88  });
89  server.on("/bk", []() {
90    motor_back();
91    server.send(200, "text/plain",  "Back");
92  });
93
94  server.on("/st", []() {
95    motor_stop();
96    server.send(200, "text/plain", "Stop");
97  });
98  server.on("/lt",  []() {
99    motor_left();
100    server.send(200, "text/plain", "Left");
101  });
102  server.on("/rt", []() {
103    motor_right();
104    server.send(200,  "text/plain", "Right");
105  });
106
107  server.begin();
108  Serial.println("HTTP  server started");
109}
110
111void loop(void){
112  server.handleClient();
113}

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

const char* ssid = "your_network_ssid";
const char*  password = "your_network_password";

ESP8266WebServer server(80);

void  handleRoot() {
  server.send(200, "text/plain", "hello from Robot!");
}

void  motor_forward(){
    digitalWrite(16, 1);
    digitalWrite(5, 0);
    digitalWrite(4,  1);
    digitalWrite(0, 0);
  }
void motor_stop(){
    digitalWrite(16,  0);
    digitalWrite(5, 0);
    digitalWrite(4, 0);
    digitalWrite(0,  0);
  }
void motor_back(){
    digitalWrite(16, 0);
    digitalWrite(5,  1);
    digitalWrite(4, 0);
    digitalWrite(0, 1);
  }

void motor_left(){
    digitalWrite(16, 0);
    digitalWrite(5, 1);
    digitalWrite(4, 1);
    digitalWrite(0, 0);
  }
void motor_right(){
    digitalWrite(16, 1);
    digitalWrite(5, 0);
    digitalWrite(4, 0);
    digitalWrite(0, 1);
  }

void setup(void){

  // prepare Motor Output Pins
  pinMode(16,  OUTPUT);
  digitalWrite(16, 0);
  
  // prepare GPIO5 relay 1
  pinMode(5,  OUTPUT);
  digitalWrite(5, 0);
  
  pinMode(4, OUTPUT);
  digitalWrite(4,  0);
  
  pinMode(0, OUTPUT);
  digitalWrite(0, 0);
  
  
  Serial.begin(115200);
  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: ");
  Serial.println(WiFi.localIP());

  if  (MDNS.begin("esp8266")) {
    Serial.println("MDNS responder started");
  }

  server.on("/", handleRoot);

  server.on("/fw", []() {
    motor_forward();
    server.send(200, "text/plain", "Forward");
  });
  server.on("/bk", []() {
    motor_back();
    server.send(200, "text/plain",  "Back");
  });

  server.on("/st", []() {
    motor_stop();
    server.send(200, "text/plain", "Stop");
  });
  server.on("/lt",  []() {
    motor_left();
    server.send(200, "text/plain", "Left");
  });
  server.on("/rt", []() {
    motor_right();
    server.send(200,  "text/plain", "Right");
  });

  server.begin();
  Serial.println("HTTP  server started");
}

void loop(void){
  server.handleClient();
}

Code 2

c_cpp

1#include <ESP8266WiFi.h>
2#include <WiFiClient.h>
3#include <ESP8266WebServer.h>
4#include
5  <ESP8266mDNS.h>
6
7const char* ssid = "your_network_ssid";
8const char*
9  password = "your_network_password";
10
11ESP8266WebServer server(80);
12
13void
14  handleRoot() {
15  server.send(200, "text/plain", "hello from Robot!");
16}
17
18void
19  motor_forward(){
20    digitalWrite(16, 1);
21    digitalWrite(5, 0);
22    digitalWrite(4,
23  1);
24    digitalWrite(0, 0);
25  }
26void motor_stop(){
27    digitalWrite(16,
28  0);
29    digitalWrite(5, 0);
30    digitalWrite(4, 0);
31    digitalWrite(0,
32  0);
33  }
34void motor_back(){
35    digitalWrite(16, 0);
36    digitalWrite(5,
37  1);
38    digitalWrite(4, 0);
39    digitalWrite(0, 1);
40  }
41
42void motor_left(){
43
44    digitalWrite(16, 0);
45    digitalWrite(5, 1);
46    digitalWrite(4, 1);
47
48    digitalWrite(0, 0);
49  }
50void motor_right(){
51    digitalWrite(16, 1);
52
53    digitalWrite(5, 0);
54    digitalWrite(4, 0);
55    digitalWrite(0, 1);
56
57  }
58
59void setup(void){
60
61  // prepare Motor Output Pins
62  pinMode(16,
63  OUTPUT);
64  digitalWrite(16, 0);
65  
66  // prepare GPIO5 relay 1
67  pinMode(5,
68  OUTPUT);
69  digitalWrite(5, 0);
70  
71  pinMode(4, OUTPUT);
72  digitalWrite(4,
73  0);
74  
75  pinMode(0, OUTPUT);
76  digitalWrite(0, 0);
77  
78  
79  Serial.begin(115200);
80
81  WiFi.begin(ssid, password);
82  Serial.println("");
83
84  // Wait for connection
85
86  while (WiFi.status() != WL_CONNECTED) {
87    delay(500);
88    Serial.print(".");
89
90  }
91  Serial.println("");
92  Serial.print("Connected to ");
93  Serial.println(ssid);
94
95  Serial.print("IP address: ");
96  Serial.println(WiFi.localIP());
97
98  if
99  (MDNS.begin("esp8266")) {
100    Serial.println("MDNS responder started");
101
102  }
103
104  server.on("/", handleRoot);
105
106  server.on("/fw", []() {
107
108    motor_forward();
109    server.send(200, "text/plain", "Forward");
110  });
111
112  server.on("/bk", []() {
113    motor_back();
114    server.send(200, "text/plain",
115  "Back");
116  });
117
118  server.on("/st", []() {
119    motor_stop();
120
121    server.send(200, "text/plain", "Stop");
122  });
123  server.on("/lt",
124  []() {
125    motor_left();
126    server.send(200, "text/plain", "Left");
127
128  });
129  server.on("/rt", []() {
130    motor_right();
131    server.send(200,
132  "text/plain", "Right");
133  });
134
135  server.begin();
136  Serial.println("HTTP
137  server started");
138}
139
140void loop(void){
141  server.handleClient();
142}

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

const char* ssid = "your_network_ssid";
const char*
  password = "your_network_password";

ESP8266WebServer server(80);

void
  handleRoot() {
  server.send(200, "text/plain", "hello from Robot!");
}

void
  motor_forward(){
    digitalWrite(16, 1);
    digitalWrite(5, 0);
    digitalWrite(4,
  1);
    digitalWrite(0, 0);
  }
void motor_stop(){
    digitalWrite(16,
  0);
    digitalWrite(5, 0);
    digitalWrite(4, 0);
    digitalWrite(0,
  0);
  }
void motor_back(){
    digitalWrite(16, 0);
    digitalWrite(5,
  1);
    digitalWrite(4, 0);
    digitalWrite(0, 1);
  }

void motor_left(){

    digitalWrite(16, 0);
    digitalWrite(5, 1);
    digitalWrite(4, 1);

    digitalWrite(0, 0);
  }
void motor_right(){
    digitalWrite(16, 1);

    digitalWrite(5, 0);
    digitalWrite(4, 0);
    digitalWrite(0, 1);

  }

void setup(void){

  // prepare Motor Output Pins
  pinMode(16,
  OUTPUT);
  digitalWrite(16, 0);
  
  // prepare GPIO5 relay 1
  pinMode(5,
  OUTPUT);
  digitalWrite(5, 0);
  
  pinMode(4, OUTPUT);
  digitalWrite(4,
  0);
  
  pinMode(0, OUTPUT);
  digitalWrite(0, 0);
  
  
  Serial.begin(115200);

  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: ");
  Serial.println(WiFi.localIP());

  if
  (MDNS.begin("esp8266")) {
    Serial.println("MDNS responder started");

  }

  server.on("/", handleRoot);

  server.on("/fw", []() {

    motor_forward();
    server.send(200, "text/plain", "Forward");
  });

  server.on("/bk", []() {
    motor_back();
    server.send(200, "text/plain",
  "Back");
  });

  server.on("/st", []() {
    motor_stop();

    server.send(200, "text/plain", "Stop");
  });
  server.on("/lt",
  []() {
    motor_left();
    server.send(200, "text/plain", "Left");

  });
  server.on("/rt", []() {
    motor_right();
    server.send(200,
  "text/plain", "Right");
  });

  server.begin();
  Serial.println("HTTP
  server started");
}

void loop(void){
  server.handleClient();
}

Downloadable files

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Circuit Di gram

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Documentation

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