Wi-Fi Controlled Bot

This bot implements the addition of ESP8266 for establishing a Wi-Fi communication between the Arduino on the remote side and the bot side.

Jul 27, 2021

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2 respects

Devices & Components

Arduino Uno Rev3

Jumper wires (generic)

Tactile Switch, SPST-NO

SparkFun Breadboard Power Supply 5V/3.3V

Dual H-Bridge motor drivers L298

DC motor (generic)

Breadboard (generic)

ESP8266 ESP-01

Hardware & Tools

Soldering iron (generic)

Software & Tools

Arduino IDE

Project description

Code

Bot : Arduino Code

arduino

1const int i1 = 2;
2const int i2 = 3;
3const int i3 = 4;
4const int  i4 = 5;
5int i;
6void setup() {
7  Serial.begin(115200);
8  pinMode(i1,  OUTPUT);
9  pinMode(i2, OUTPUT);
10  pinMode(i3, OUTPUT);
11  pinMode(i4, OUTPUT);
12}
13
14void  loop() {
15  if(Serial.available()) {
16    i = Serial.read();
17    Serial.println(i);
18
19    if(i == 115) {
20      digitalWrite(i1, HIGH);
21      digitalWrite(i2, LOW);
22      digitalWrite(i3, LOW);
23      digitalWrite(i4, HIGH); 
24    }
25    else  if(i == 119) {
26      digitalWrite(i1, LOW);
27      digitalWrite(i2, HIGH);
28      digitalWrite(i3, HIGH);
29      digitalWrite(i4, LOW);      
30    }
31    else if(i == 100) {
32      digitalWrite(i1, HIGH);
33      digitalWrite(i2,  LOW);
34      digitalWrite(i3, HIGH);
35      digitalWrite(i4, LOW);
36    }
37    else if(i == 97) {
38      digitalWrite(i1, LOW);
39      digitalWrite(i2,  HIGH);
40      digitalWrite(i3, LOW);
41      digitalWrite(i4, HIGH);
42    }
43  }
44  else {
45    delay(600);
46    i = 0;
47    digitalWrite(i1, LOW);
48    digitalWrite(i2, LOW);
49    digitalWrite(i3, LOW);
50    digitalWrite(i4,  LOW);
51  }
52}
53

const int i1 = 2;
const int i2 = 3;
const int i3 = 4;
const int  i4 = 5;
int i;
void setup() {
  Serial.begin(115200);
  pinMode(i1,  OUTPUT);
  pinMode(i2, OUTPUT);
  pinMode(i3, OUTPUT);
  pinMode(i4, OUTPUT);
}

void  loop() {
  if(Serial.available()) {
    i = Serial.read();
    Serial.println(i);

    if(i == 115) {
      digitalWrite(i1, HIGH);
      digitalWrite(i2, LOW);
      digitalWrite(i3, LOW);
      digitalWrite(i4, HIGH); 
    }
    else  if(i == 119) {
      digitalWrite(i1, LOW);
      digitalWrite(i2, HIGH);
      digitalWrite(i3, HIGH);
      digitalWrite(i4, LOW);      
    }
    else if(i == 100) {
      digitalWrite(i1, HIGH);
      digitalWrite(i2,  LOW);
      digitalWrite(i3, HIGH);
      digitalWrite(i4, LOW);
    }
    else if(i == 97) {
      digitalWrite(i1, LOW);
      digitalWrite(i2,  HIGH);
      digitalWrite(i3, LOW);
      digitalWrite(i4, HIGH);
    }
  }
  else {
    delay(600);
    i = 0;
    digitalWrite(i1, LOW);
    digitalWrite(i2, LOW);
    digitalWrite(i3, LOW);
    digitalWrite(i4,  LOW);
  }
}

Remote : Arduino Code

arduino

1const int f = A0;
2const int l = A1;
3const int b = A2;
4const int  r = 7;
5
6void setup() {
7  pinMode(f, INPUT_PULLUP);
8  pinMode(b, INPUT_PULLUP);
9  pinMode(l, INPUT_PULLUP);
10  pinMode(r, INPUT_PULLUP);
11  Serial.begin(115200);
12}
13void  loop() {
14  delay(500);
15  if(digitalRead(f) == 0) {
16    Serial.print("w");
17  }
18  else if(digitalRead(b) == 0) {
19    Serial.print("s");
20  }
21  else  if(digitalRead(l) == 0) {
22    Serial.print("a");
23  }
24  else if(digitalRead(r)  == 0) {
25    Serial.print("d");
26  }
27}
28

const int f = A0;
const int l = A1;
const int b = A2;
const int  r = 7;

void setup() {
  pinMode(f, INPUT_PULLUP);
  pinMode(b, INPUT_PULLUP);
  pinMode(l, INPUT_PULLUP);
  pinMode(r, INPUT_PULLUP);
  Serial.begin(115200);
}
void  loop() {
  delay(500);
  if(digitalRead(f) == 0) {
    Serial.print("w");
  }
  else if(digitalRead(b) == 0) {
    Serial.print("s");
  }
  else  if(digitalRead(l) == 0) {
    Serial.print("a");
  }
  else if(digitalRead(r)  == 0) {
    Serial.print("d");
  }
}

Remote : ESP8266 Code

arduino

1#include <ESP8266WiFi.h>
2
3#define STASSID "ESP8266"
4#define  STAPSK  "12345678"
5
6const char* ssid     = STASSID;
7const char* password  = STAPSK;
8
9const char* host = "192.168.4.1";
10const uint16_t port = 1234;
11char  c;
12
13void setup() {
14  Serial.begin(115200);
15  Serial.println();
16  WiFi.mode(WIFI_STA);
17  WiFi.begin(ssid, password);
18
19  while(WiFi.status() != WL_CONNECTED) {
20    Serial.println("Trying to Connect to ESP8266 Access Point");
21    delay(1000);
22  }
23  Serial.println("Connection Successful");
24}
25
26void loop() {
27  WiFiClient client;
28
29  if(!client.connect(host, port)) {
30    Serial.println("Connection  Lost, Trying to establish connection");
31    delay(2000);
32    return;
33  }
34
35  Serial.println("Communication Established");
36  while(client.connect(host,  port)) {
37    if(Serial.available()) {
38      c = Serial.read();
39      Serial.println(c);  
40      client.print(c);
41    }
42  }
43
44  Serial.println("Connection  Lost");
45  client.stop();
46}
47

#include <ESP8266WiFi.h>

#define STASSID "ESP8266"
#define  STAPSK  "12345678"

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

const char* host = "192.168.4.1";
const uint16_t port = 1234;
char  c;

void setup() {
  Serial.begin(115200);
  Serial.println();
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  while(WiFi.status() != WL_CONNECTED) {
    Serial.println("Trying to Connect to ESP8266 Access Point");
    delay(1000);
  }
  Serial.println("Connection Successful");
}

void loop() {
  WiFiClient client;

  if(!client.connect(host, port)) {
    Serial.println("Connection  Lost, Trying to establish connection");
    delay(2000);
    return;
  }

  Serial.println("Communication Established");
  while(client.connect(host,  port)) {
    if(Serial.available()) {
      c = Serial.read();
      Serial.println(c);  
      client.print(c);
    }
  }

  Serial.println("Connection  Lost");
  client.stop();
}

Remote : ESP8266 Code

arduino

1#include <ESP8266WiFi.h>
2
3#define STASSID "ESP8266"
4#define
5  STAPSK  "12345678"
6
7const char* ssid     = STASSID;
8const char* password
9  = STAPSK;
10
11const char* host = "192.168.4.1";
12const uint16_t port = 1234;
13char
14  c;
15
16void setup() {
17  Serial.begin(115200);
18  Serial.println();
19  WiFi.mode(WIFI_STA);
20
21  WiFi.begin(ssid, password);
22
23  while(WiFi.status() != WL_CONNECTED) {
24
25    Serial.println("Trying to Connect to ESP8266 Access Point");
26    delay(1000);
27
28  }
29  Serial.println("Connection Successful");
30}
31
32void loop() {
33
34  WiFiClient client;
35
36  if(!client.connect(host, port)) {
37    Serial.println("Connection
38  Lost, Trying to establish connection");
39    delay(2000);
40    return;
41
42  }
43
44  Serial.println("Communication Established");
45  while(client.connect(host,
46  port)) {
47    if(Serial.available()) {
48      c = Serial.read();
49      Serial.println(c);
50  
51      client.print(c);
52    }
53  }
54
55  Serial.println("Connection
56  Lost");
57  client.stop();
58}
59

#include <ESP8266WiFi.h>

#define STASSID "ESP8266"
#define
  STAPSK  "12345678"

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

const char* host = "192.168.4.1";
const uint16_t port = 1234;
char
  c;

void setup() {
  Serial.begin(115200);
  Serial.println();
  WiFi.mode(WIFI_STA);

  WiFi.begin(ssid, password);

  while(WiFi.status() != WL_CONNECTED) {

    Serial.println("Trying to Connect to ESP8266 Access Point");
    delay(1000);

  }
  Serial.println("Connection Successful");
}

void loop() {

  WiFiClient client;

  if(!client.connect(host, port)) {
    Serial.println("Connection
  Lost, Trying to establish connection");
    delay(2000);
    return;

  }

  Serial.println("Communication Established");
  while(client.connect(host,
  port)) {
    if(Serial.available()) {
      c = Serial.read();
      Serial.println(c);
  
      client.print(c);
    }
  }

  Serial.println("Connection
  Lost");
  client.stop();
}

Bot : ESP8266 Code

arduino

1#include <ESP8266WiFi.h>
2#include <WiFiClient.h>
3
4#define APSSID  "ESP8266"
5#define APPSK  "12345678"
6
7const char *apssid = APSSID;
8const  char *appassword = APPSK;
9char c;
10
11WiFiServer server(1234);
12
13void  setup() {
14  Serial.begin(115200);
15  delay(1000);
16  WiFi.softAP(apssid,  appassword);
17  server.begin();
18  Serial.println();
19}
20
21void loop()  {
22  WiFiClient client = server.available();
23  
24  if(client) {
25    while(client.connected())  {
26      while(client.available() > 0) {
27        c = client.read();
28        Serial.write(c);
29      }
30      delay(25);
31    }
32  }
33}
34

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

#define APSSID  "ESP8266"
#define APPSK  "12345678"

const char *apssid = APSSID;
const  char *appassword = APPSK;
char c;

WiFiServer server(1234);

void  setup() {
  Serial.begin(115200);
  delay(1000);
  WiFi.softAP(apssid,  appassword);
  server.begin();
  Serial.println();
}

void loop()  {
  WiFiClient client = server.available();
  
  if(client) {
    while(client.connected())  {
      while(client.available() > 0) {
        c = client.read();
        Serial.write(c);
      }
      delay(25);
    }
  }
}

Bot : Arduino Code

arduino

1const int i1 = 2;
2const int i2 = 3;
3const int i3 = 4;
4const int
5  i4 = 5;
6int i;
7void setup() {
8  Serial.begin(115200);
9  pinMode(i1,
10  OUTPUT);
11  pinMode(i2, OUTPUT);
12  pinMode(i3, OUTPUT);
13  pinMode(i4, OUTPUT);
14}
15
16void
17  loop() {
18  if(Serial.available()) {
19    i = Serial.read();
20    Serial.println(i);
21
22
23    if(i == 115) {
24      digitalWrite(i1, HIGH);
25      digitalWrite(i2, LOW);
26
27      digitalWrite(i3, LOW);
28      digitalWrite(i4, HIGH); 
29    }
30    else
31  if(i == 119) {
32      digitalWrite(i1, LOW);
33      digitalWrite(i2, HIGH);
34
35      digitalWrite(i3, HIGH);
36      digitalWrite(i4, LOW);      
37    }
38
39    else if(i == 100) {
40      digitalWrite(i1, HIGH);
41      digitalWrite(i2,
42  LOW);
43      digitalWrite(i3, HIGH);
44      digitalWrite(i4, LOW);
45    }
46
47    else if(i == 97) {
48      digitalWrite(i1, LOW);
49      digitalWrite(i2,
50  HIGH);
51      digitalWrite(i3, LOW);
52      digitalWrite(i4, HIGH);
53    }
54
55  }
56  else {
57    delay(600);
58    i = 0;
59    digitalWrite(i1, LOW);
60
61    digitalWrite(i2, LOW);
62    digitalWrite(i3, LOW);
63    digitalWrite(i4,
64  LOW);
65  }
66}
67

const int i1 = 2;
const int i2 = 3;
const int i3 = 4;
const int
  i4 = 5;
int i;
void setup() {
  Serial.begin(115200);
  pinMode(i1,
  OUTPUT);
  pinMode(i2, OUTPUT);
  pinMode(i3, OUTPUT);
  pinMode(i4, OUTPUT);
}

void
  loop() {
  if(Serial.available()) {
    i = Serial.read();
    Serial.println(i);


    if(i == 115) {
      digitalWrite(i1, HIGH);
      digitalWrite(i2, LOW);

      digitalWrite(i3, LOW);
      digitalWrite(i4, HIGH); 
    }
    else
  if(i == 119) {
      digitalWrite(i1, LOW);
      digitalWrite(i2, HIGH);

      digitalWrite(i3, HIGH);
      digitalWrite(i4, LOW);      
    }

    else if(i == 100) {
      digitalWrite(i1, HIGH);
      digitalWrite(i2,
  LOW);
      digitalWrite(i3, HIGH);
      digitalWrite(i4, LOW);
    }

    else if(i == 97) {
      digitalWrite(i1, LOW);
      digitalWrite(i2,
  HIGH);
      digitalWrite(i3, LOW);
      digitalWrite(i4, HIGH);
    }

  }
  else {
    delay(600);
    i = 0;
    digitalWrite(i1, LOW);

    digitalWrite(i2, LOW);
    digitalWrite(i3, LOW);
    digitalWrite(i4,
  LOW);
  }
}

Remote : Arduino Code

arduino

1const int f = A0;
2const int l = A1;
3const int b = A2;
4const int
5  r = 7;
6
7void setup() {
8  pinMode(f, INPUT_PULLUP);
9  pinMode(b, INPUT_PULLUP);
10
11  pinMode(l, INPUT_PULLUP);
12  pinMode(r, INPUT_PULLUP);
13  Serial.begin(115200);
14}
15void
16  loop() {
17  delay(500);
18  if(digitalRead(f) == 0) {
19    Serial.print("w");
20
21  }
22  else if(digitalRead(b) == 0) {
23    Serial.print("s");
24  }
25  else
26  if(digitalRead(l) == 0) {
27    Serial.print("a");
28  }
29  else if(digitalRead(r)
30  == 0) {
31    Serial.print("d");
32  }
33}
34

const int f = A0;
const int l = A1;
const int b = A2;
const int
  r = 7;

void setup() {
  pinMode(f, INPUT_PULLUP);
  pinMode(b, INPUT_PULLUP);

  pinMode(l, INPUT_PULLUP);
  pinMode(r, INPUT_PULLUP);
  Serial.begin(115200);
}
void
  loop() {
  delay(500);
  if(digitalRead(f) == 0) {
    Serial.print("w");

  }
  else if(digitalRead(b) == 0) {
    Serial.print("s");
  }
  else
  if(digitalRead(l) == 0) {
    Serial.print("a");
  }
  else if(digitalRead(r)
  == 0) {
    Serial.print("d");
  }
}

Downloadable files

remote_controlled_bot_diagram_QtGucTNZuX.png

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