VOICE CONTROLLED TEMPERATURE SENSING ROBOT

Page last updated 19 Oct 2011, by Mayura Oak. 1 reply

Our main idea was to develop a Voice-controlled robot using the Easy-VR voice recognition and synthesis module. The robot used was a sparkfun ROB-10825 Magician Robot that came with a basic chassis, motor driven wheels and plenty of space to fit in additional modules. For voice recognition driven commands given to the bot, we used the system inbuilt commands provided within the EasyVR module. We also used the temperature and humidity sensor- SHT15 to measure the temperature and read it out on an LCD as well as the speakers.

The components we used to build this project-

  • Sparkfun ROB-10825 Magician Chassis
  • Mbed chip
  • Sparkfun SHT15 Humidity and Temperature sensor Breakout board
  • EasyVR Voice recognition and synthesis module
  • H-bridge circuit breakout
  • LCD board

The wiring table is as follows:

/media/uploads/SaMa/miniproj-table.jpg 

#include "mbed.h"
#include "motordriver.h"
#include "SHTx/sht15.hpp"
#include "TextLCD.h"

DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);
Motor m_left(p21, p6, p5); // pwm, fwd, rev
Motor m_right(p22, p8, p7); // pwm, fwd, rev
Serial listen(p9, p10);  // tx, rx of Easy VR
SHTx::SHT15 sensor(p28, p27); //sda,scl for temperature ensor
TextLCD lcd(p15, p16, p17, p18, p19, p20);


int main() {
    char rchar=0;
    float left, right;// initComp, diff, finalComp;
    sensor.reset();   //clears all the registers

    sensor.setOTPReload(true);    //calibration data is uploaded to each register before each measurement
    sensor.setResolution(false);
   
//wake up device - needs more work and a timeout

    
    listen.putc('b');
    while (listen.getc()!='o') {
        listen.putc('b');
        led1 = 1;
        wait(0.2);
    }
    led2=1;
    while (1) {
        listen.putc('i'); //Start Recognition
        listen.putc('C'); //Use Wordset 3 - the numbers 1..10

        while (listen.readable()!=0) {}
        if (listen.getc()=='s') {
            listen.putc(' ');
            rchar=listen.getc();
            //command for left
            if (rchar=='A') {
                while (1) {
                 left=0.6;
                        right=0.3;
                        m_left.speed(left);
                        m_right.speed(right);
                    led1=!led1;
                    listen.putc('i');
                    listen.putc('B');
                    while (listen.readable()!=0) {}
                    if (listen.getc()=='s') {
                        listen.putc(' ');
                        rchar=listen.getc();
                       
                        if (rchar=='G') {
                            led1=led2=led3=led4=1;
                            m_left.stop(0.0);
                            m_right.stop(0.0);
                            sensor.update(); // Temperature in celcius
                            sensor.setScale(false);
                            lcd.printf("temp [ %3.2f C ]\r\n", sensor.getTemperature() );


                            wait(5);
                            // Temperature in fahrenheit
                            sensor.setScale(true);
                            lcd.printf("temp [ %3.2f F ]\r\n", sensor.getTemperature());

                            break;
                        }
                    }
                }  
            }

            //command for right
            if (rchar=='B') {
                while (1) {
                 left=0.3;
                 right=0.6;
                        m_left.speed(left);
                        m_right.speed(right);
                    led2=!led2;
                    listen.putc('i');
                    listen.putc('B');
                    while (listen.readable()!=0) {}
                    if (listen.getc()=='s') {
                        listen.putc(' ');
                        rchar=listen.getc();
                       
                        if (rchar=='G') {
                            led1=led2=led3=led4=1;
                            m_left.stop(0.0);
                            m_right.stop(0.0);
                            sensor.update(); // Temperature in celcius
                            sensor.setScale(false);
                            
                            lcd.printf("temp [ %3.2f C ]\r\n", sensor.getTemperature() );


                            wait(5);
                            // Temperature in fahrenheit
                            sensor.setScale(true);
                           
                            lcd.printf("temp [ %3.2f F ]\r\n", sensor.getTemperature());

                            break;
                        }
                    }
                }
            }
            // command for forward
            if (rchar=='E') {
                while (1) {
                    led3=!led3;
                    left=0.6;
                    right=0.6;
                    m_left.speed(left);
                    m_right.speed(right);
                    listen.putc('i');
                    listen.putc('B');
                    while (listen.readable()!=0) {}
                    if (listen.getc()=='s') {
                        listen.putc(' ');
                        rchar=listen.getc();
                        if (rchar=='G') {
                            led1=led2=led3=led4=1;
                            m_left.stop(0.0);
                            m_right.stop(0.0);
                            sensor.update(); // Temperature in celcius
                            sensor.setScale(false);
                           
                            lcd.printf("temp [ %3.2f C ]\r\n", sensor.getTemperature() );


                            wait(5);
                            // Temperature in fahrenheit
                            sensor.setScale(true);
                          
                            lcd.printf("temp [ %3.2f F ]\r\n", sensor.getTemperature());

                            break;
                        }
                    }  // rchar=0;
                }
            }
            //command for backward.
            if (rchar=='F') {
                while (1) {
                    led4=!led4;
                    left=-0.6;
                    right=-0.6;
                    m_left.speed(left);
                    m_right.speed(right);
                    listen.putc('i');
                    listen.putc('B');
                    while (listen.readable()!=0) {}
                    if (listen.getc()=='s') {
                        listen.putc(' ');
                        rchar=listen.getc();
                        if (rchar=='G') {
                            led1=led2=led3=led4=1;
                            m_left.stop(0.0);
                            m_right.stop(0.0);
                            sensor.update(); // Temperature in celcius
                            sensor.setScale(false);
                          
                            lcd.printf("temp [ %3.2f C ]\r\n", sensor.getTemperature() );


                            wait(5);
                            // Temperature in fahrenheit
                            sensor.setScale(true);
                            
                            lcd.printf("temp [ %3.2f F ]\r\n", sensor.getTemperature());

                            break;
                        }
                    } // rchar=0;
                }
            }
        }
    }
}

Here are some photographs of our completed Robot:

/media/uploads/SaMa/_scaled_photo181.jpg /media/uploads/SaMa/_scaled_photo180.jpg

The video Demonstration:

1 comment on VOICE CONTROLLED TEMPERATURE SENSING ROBOT:

veeranjaneyaswami Rolli
13 Feb 2015

Its movement is very fast

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