Controlling RSLK Over Internet

Learn how easy it is to control TI RSLK kit over internet and control different motions of robot using Android app.

AdvancedFull instructions provided2 days1,468

Things used in this project

Hardware components

Texas Instruments TI Robotics System Learning Kit TI-RSLK

Texas Instruments MSP-EXP432P401R SimpleLink MSP432 LaunchPad

Texas Instruments CC3100BOOST SimpleLink CC3100 Wi-Fi BoosterPack

Software apps and online services

MIT App Inventor

Story

Aim:

To control the RSLK Kit through Internet using an Android app.

Block Diagram:

block diagram

Working:

We are controlling a robot car using internet. We have developed a mobile application which sends commands to the server whereas MSP432 LaunchPad and CC3100 Booster Pack receive the commands sent by the mobile application from the server (Database) and the car moves left, right, forward and backward according to the data received from the server. The motion of the robot is controlled as per the Energia code that is loaded onto the launch pad module.

components at glance

variables sent via app to control robo

App Features:

Application with push buttons to control forward, backward, left, right direction movements of robot.

Voice module from MIT App Inventor to control robot through voice commands.

App layout

Advantages and Applications:

• It requires low maintenance.

• It can be controlled from all over the world with strong internet connections.

• Military application usage is one of the key advantages of this robot.

• This basic model can be further constructed and iterated with different additional modules for industrial purposes and applications.

Limitations:

• We can use solar energy panels instead of charging batteries.

• We need to modify robot (i.e. wheels) to operate in various surroundings and situations.

• Wi-Fi range needs to be boosted for controlling the robot efficiently.

Demo Video:

RSLK IoT Control

#ifndef __CC3200R1M1RGC__
// Do not include SPI for CC3200 LaunchPad
#include <SPI.h>
#endif
#include <WiFi.h>

//define the pins to be connected to ultrasonic sensorw
//define the pins to be connected to ultrasonic sensor




char ssid[] = "Ashita";
char password[] = "ashita123";

const int HTTPPORT = 80;
char * USER_AGENT = "TI";
char * VERSION = "1.6";
char * server = "things.ubidots.com";
char* TOKEN = "A1E-tHJT1waqiDx5MkG2F3htau6fuYXXLL"; // Put here your TOKEN

char* DEVICE_LABEL = "autobot"; // Your Device label

/* Put here your variable's labels*/
char const * VARIABLE_LABEL = "autobot";
WiFiClient client;

void setup() {



  pinMode(40,OUTPUT);
pinMode(39,OUTPUT);
pinMode(38,OUTPUT);
pinMode(35,OUTPUT);
pinMode(34,OUTPUT);
pinMode(33,OUTPUT);

digitalWrite(38,HIGH);
digitalWrite(33,HIGH);
  //Initialize serial and wait for port to open:
  Serial.begin(115200);

  // attempt to connect to Wifi network:
  Serial.print("Attempting to connect to Network named: ");
  // print the network name (SSID);
  Serial.println(ssid); 
  // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
  WiFi.begin(ssid, password);
  while ( WiFi.status() != WL_CONNECTED) {
    // print dots while we wait to connect
    Serial.print(".");
    delay(300);

  }
  
  Serial.println("\nYou're connected to the network");
  Serial.println("Waiting for an ip address");
  
  while (WiFi.localIP() == INADDR_NONE) {
    // print dots while we wait for an ip addresss
    Serial.print(".");
    delay(300);
  }

 
}


void loop() {
   if (client.connect(server, 80)) {
    client.print(F("GET /api/v1.6/devices/"));
    client.print(DEVICE_LABEL);
    client.print(F("/"));
    client.print(VARIABLE_LABEL);
    client.print(F("/lv"));
    client.print(F(" HTTP/1.1\r\n"));
    client.print(F("Host: "));
    client.print(server);
    client.print(F("\r\n"));
    client.print(F("User-Agent: "));
    client.print(USER_AGENT);
    client.print(F("/"));
    client.print(VERSION);
    client.print(F("\r\n"));
    client.print(F("X-Auth-Token: "));
    client.print(TOKEN);
    client.print(F("\r\n"));
    client.print(F("Content-Type: application/json\r\n\r\n"));
    client.println();
    
}
  String s="";
  bool a=false;
  char movement='5';
  while (client.available()) {
    char c = client.read();
    s=s+c;
    a=true;
  }

  Serial.println(s);
   movement = get_movement(s);
   Serial.println(movement);
 
  if(a==true){
      client.stop();
      a=false;
  }
 
  if(movement=='1'){    //Forward

analogWrite(40,80);
analogWrite(39,-80);
analogWrite(35,80);    // forward2
analogWrite(34,-80);
  
  }
  if(movement=='5'){ //stop
analogWrite(40,0);
analogWrite(39,0);
analogWrite(35,0);    
analogWrite(34,0);
  
    }

 
  if(movement=='2'){    //back

analogWrite(40,-80);
analogWrite(39,80);
analogWrite(35,-80);    // back
analogWrite(34,80);
  
  }

  
  if(movement=='3'){    //

analogWrite(40,80);
analogWrite(39,-80);
analogWrite(35,80);    // left
analogWrite(34,80);
  
  }


  if(movement=='4'){    //Forward

analogWrite(40,80);
analogWrite(39,80);
analogWrite(35,80);    // right
analogWrite(34,-80);
  
  }
  

 }


void printWifiStatus() {
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print your WiFi shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI):");
  Serial.print(rssi);
  Serial.println(" dBm");
}


char get_movement(String a){
  int endi =0;
  int i;
  for(i=0;i<a.length();i++){

    if(a.charAt(i)=='\n'){
      endi++;
    }
    if(endi==10){
      break;
    }
  }
  return a.charAt(i+1);
  
}