Published June 6, 2021 © GPL3+

Wi-Fi Controlled Robot for Corona Patients

Here I have made a Robot, which is controlled by a smartphone through wi-fi. This robot is capable of making a video call if you want to see

IntermediateFull instructions provided11 hours436

Wi-Fi Controlled Robot for Corona Patients

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board

SparkFun Dual H-Bridge motor drivers L298

Battery Holder, 18650 x 2

DC Motor, 12 V

Pimoroni Maker Essentials - Micro-motors & Grippy Wheels

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Hot glue gun (generic)

Soldering iron (generic)

Solder Wire, Lead Free

Hot Air Station, Industrial

Story

Nowadays, coronavirus or covid-19 is the greatest threat for all human beings. Staying at a safe distance and keeping a social distance is now the only way to stay safe. But, could we stay away if our family or a family member becomes infected? Obviously No... But unfortunately, we have to stay away...

To solve this problem, here I have made a Robot, which is controlled by a smartphone through wi-fi. This robot is capable of making a video call if you want to see the patient or vise-versa. This is also capable to carry necessary things. If you want to send something to the patient, it will carry and deliver it.

LIST OF COMPONENTS

NodeMCU

L298N

TT gear motors and wheels

ABOUT JLCPCB

JLCPCB has been at the forefront of the PCB industry. With over 14-year continuous innovation and improvement based on customers' need, we have been growing fast and becoming a leading global PCB manufacturer, who provides the rapid production of high-reliability and cost-effective PCBs and creates the best customer experience in the industry.

Our missionMake hardware development easier

Whether you’re creating your first PCB, or developing an electronic hardware product, we’re here to help you build hardware easier and faster by providing rapid PCB prototype and SMT assembly service. We're constantly looking for new ways to improve and shorten the PCB prototyping process — from pioneering online quoting/ordering system, automatic production to fast delivery.

WHY JLCPCB

Higher QualityEnsuring quality and its consistent improvement are the two main guidelines of our company. Our advanced PCB technology allows us to provide high precision boards suitable for industrial, military, aerospace, and medical applications. We are continuously investing top-level base materials and advanced equipments for fully automated production lines, which enables us to offer our customers high throughput with consistently high quality.

Lower CostSince 2006, JLCPCB drove to become more efficient and reduce costs. We promise to offer customers the most economic PCBs forever. JLCPCB makes the cheapest but top-quality PCBs possibly because of scale effect, extremely high production efficiency, and less manpower cost.

Faster DeliveryOur easy-to-use online ordering system, professional and efficient customer service, digital manufacturing technology, full-automatic production lines, and stable logistics partners make every step to deliver your PCBs faster.

HOW TO UPLOAD THE CODE

Please follow the steps below, If you are new and not well familiar with this ESP8266 module, or facing a problem while uploading the code

1.First Download the code from the link below. Now open Arduino and Go to File~New.

2.Now a new window will appear. Next, Delete all the existing code and Paste the given code.

3.In the code, you will find Additional Board Manager URL now copy the URL and do the next step. For Different OS you have a different option. MAC: Go to Arduino ~ Preferences Windows: Fille ~ Preferences

4.Now Paste it in the Additional Board Manager URL section and press Ok. Now go to Tools ~ Board ~ Boards Manager Search for ‘ESP8266‘ and install the latest version.

5.After the installation Then go to Tools ~ Board and then select the ESP-12E Module. So, The Board is selected Now.

6.Next, Select the Right COM Port.

7.Then compile the Programme First and then Upload it to NodeMCU. After a few seconds, the code will be compiled and then Uploaded to NodeMCU Car.

The link you have to paste on Arduino IDE

Additional Board Manager URL: http://arduino.esp8266.com/stable/package_esp8266...

Code

Code for NodeMCU

/*
Code Name: Arduino Wifi Control Car 
Code URI: https://circuitbest.com/category/arduino-projects/
Additional Board Manager URL: http://arduino.esp8266.com/stable/package_esp8266com_index.json 
Install: ESP8266 by ESP8266 Community
Author: M Tech-Ideas
Author URI: https://circuitbest.com/author/admin/
Description: This program is used to control a robot using a app
that communicates with Arduino through a ESP8266 Module.
App URI: https://drive.google.com/file/d/1pvtWsTeXhcJdpHMfGlFmbGDuH7eoLfoP/view?usp=sharing
Version: 2.0
License: Remixing or Changing this Thing is allowed. Commercial use is not allowed.
*/


#define ENA   14          // Enable/speed motors Right        GPIO14(D5)
#define ENB   12          // Enable/speed motors Left         GPIO12(D6)
#define IN_1  15          // L298N in1 motors Rightx          GPIO15(D8)
#define IN_2  13          // L298N in2 motors Right           GPIO13(D7)
#define IN_3  2           // L298N in3 motors Left            GPIO2(D4)
#define IN_4  0           // L298N in4 motors Left            GPIO0(D3)

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

String command;             //String to store app command state.
int speedCar = 800;         // 400 - 1023.
int speed_Coeff = 3;

const char* ssid = "Make DIY";
ESP8266WebServer server(80);

void setup() {
 
 pinMode(ENA, OUTPUT);
 pinMode(ENB, OUTPUT);  
 pinMode(IN_1, OUTPUT);
 pinMode(IN_2, OUTPUT);
 pinMode(IN_3, OUTPUT);
 pinMode(IN_4, OUTPUT); 
  
  Serial.begin(115200);
  
// Connecting WiFi

  WiFi.mode(WIFI_AP);
  WiFi.softAP(ssid);

  IPAddress myIP = WiFi.softAPIP();
  Serial.print("AP IP address: ");
  Serial.println(myIP);
 
 // Starting WEB-server 
     server.on ( "/", HTTP_handleRoot );
     server.onNotFound ( HTTP_handleRoot );
     server.begin();    
}

void goAhead(){ 

      digitalWrite(IN_1, LOW);
      digitalWrite(IN_2, HIGH);
      analogWrite(ENA, speedCar);

      digitalWrite(IN_3, LOW);
      digitalWrite(IN_4, HIGH);
      analogWrite(ENB, speedCar);
  }

void goBack(){ 

      digitalWrite(IN_1, HIGH);
      digitalWrite(IN_2, LOW);
      analogWrite(ENA, speedCar);

      digitalWrite(IN_3, HIGH);
      digitalWrite(IN_4, LOW);
      analogWrite(ENB, speedCar);
  }

void goRight(){ 

      digitalWrite(IN_1, HIGH);
      digitalWrite(IN_2, LOW);
      analogWrite(ENA, speedCar);

      digitalWrite(IN_3, LOW);
      digitalWrite(IN_4, HIGH);
      analogWrite(ENB, speedCar);
  }

void goLeft(){

      digitalWrite(IN_1, LOW);
      digitalWrite(IN_2, HIGH);
      analogWrite(ENA, speedCar);

      digitalWrite(IN_3, HIGH);
      digitalWrite(IN_4, LOW);
      analogWrite(ENB, speedCar);
  }

void goAheadRight(){
      
      digitalWrite(IN_1, LOW);
      digitalWrite(IN_2, HIGH);
      analogWrite(ENA, speedCar/speed_Coeff);
 
      digitalWrite(IN_3, LOW);
      digitalWrite(IN_4, HIGH);
      analogWrite(ENB, speedCar);
   }

void goAheadLeft(){
      
      digitalWrite(IN_1, LOW);
      digitalWrite(IN_2, HIGH);
      analogWrite(ENA, speedCar);

      digitalWrite(IN_3, LOW);
      digitalWrite(IN_4, HIGH);
      analogWrite(ENB, speedCar/speed_Coeff);
  }

void goBackRight(){ 

      digitalWrite(IN_1, HIGH);
      digitalWrite(IN_2, LOW);
      analogWrite(ENA, speedCar/speed_Coeff);

      digitalWrite(IN_3, HIGH);
      digitalWrite(IN_4, LOW);
      analogWrite(ENB, speedCar);
  }

void goBackLeft(){ 

      digitalWrite(IN_1, HIGH);
      digitalWrite(IN_2, LOW);
      analogWrite(ENA, speedCar);

      digitalWrite(IN_3, HIGH);
      digitalWrite(IN_4, LOW);
      analogWrite(ENB, speedCar/speed_Coeff);
  }

void stopRobot(){  

      digitalWrite(IN_1, LOW);
      digitalWrite(IN_2, LOW);
      analogWrite(ENA, speedCar);

      digitalWrite(IN_3, LOW);
      digitalWrite(IN_4, LOW);
      analogWrite(ENB, speedCar);
 }

void loop() {
    server.handleClient();
    
      command = server.arg("State");
      if (command == "F") goAhead();
      else if (command == "B") goBack();
      else if (command == "L") goLeft();
      else if (command == "R") goRight();
      else if (command == "I") goAheadRight();
      else if (command == "G") goAheadLeft();
      else if (command == "J") goBackRight();
      else if (command == "H") goBackLeft();
      else if (command == "0") speedCar = 400;
      else if (command == "1") speedCar = 470;
      else if (command == "2") speedCar = 540;
      else if (command == "3") speedCar = 610;
      else if (command == "4") speedCar = 680;
      else if (command == "5") speedCar = 750;
      else if (command == "6") speedCar = 820;
      else if (command == "7") speedCar = 890;
      else if (command == "8") speedCar = 960;
      else if (command == "9") speedCar = 1023;
      else if (command == "S") stopRobot();
}

void HTTP_handleRoot(void) {

if( server.hasArg("State") ){
       Serial.println(server.arg("State"));
  }
  server.send ( 200, "text/html", "" );
  delay(1);
}

Wi-Fi Controlled Robot for Corona Patients

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

LIST OF COMPONENTS

ABOUT JLCPCB

HOW TO UPLOAD THE CODE

Schematics

Connection Diagram

Code

Code for NodeMCU

Credits

Monalisa Paul

Comments

Embed the widget on your own site

Wi-Fi Controlled Robot for Corona Patients

Wi-Fi Controlled Robot for Corona Patients

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

LIST OF COMPONENTS

ABOUT JLCPCB

HOW TO UPLOAD THE CODE

Schematics

Connection Diagram

Code

Code for NodeMCU

Credits

Monalisa Paul

Comments

Related channels and tags