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Voice To Arduino 2: Control your LED using MIT speech recognizer!!!

HELLO THERE!!!

     In my last post, I had posted about Voice to Arduino using the MIT appinventor speech recognizer in my instructables page. In my last experiment, the Speech recognizer was actually set to send integer values to turn on a number of LED's. In this week, I will make a special twist, I will use string command such as left 90 degrees to control a servo motor movement. Will I be able to do that? Let see.....

The items needed are:

1.Arduino UNO

2.HC-06 Bluetooth Module

3. Servo Motor


The software which are used in this experiment are:
1. Arduino IDE
2. MIT app inventor 2


Alright now let's see the schematics of the circuit. The circuit consists of a servo and the Bluetooth module:
The Schematics of the circuit


Ok, now that the circuit is assembled, I will explain the code block for the MIT app inventor first, followed by the codes for Arduino:



1. The design of the app consists of a list picker,a label and a button.
The design of the mit app inventor app used in this experiment

2. Below are the code blocks that made up the app, take note that the initialization of voice word is as string if compared to previous Voice to arduino app where the initialization is as an integer
The code block part 1









The code block part 2


Now that the app is done, save,download and install the app on your phone. Alright, one part is done, let's see the Arduino code:

#include <Servo.h> // include server library
Servo ser; // create servo object to control a servo
int pos;// initial position
String left,right;//declare two variables of string


void setup() {
  ser.attach(6);//servo motor is attached at pin6
  Serial.begin(9600); // Serial comm begin at 9600bps
  
  left = String("left 90 degrees");//string variable consists of the string shown
  right = String("right 90 degrees");

}

void loop() {
  while(Serial.available()) //read while data is present
  {
    
    String value = Serial.readString(); //value read string from MIT
    Serial.print(value);
    if (value == left)//if the string received is left 90 degrees
    {
     int pos =- 90;//position - 90
     ser.write(pos);
     delay (15);
  }
  if (value == right)//if the string received is right 90 degress
    {
     int pos =+ 90;//position +90
     ser.write(pos);
     delay (15);
       
  }
  
  }
}


Upload the code to the Arduino and test it. The testing video is shown below:














Comments

  1. KHFebruary 26, 2016 at 1:43 AM

    ai2.appinventor.mit.edu/?galleryId=5424022556246016
    to download the app

    ReplyDelete

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