In this project I use BitVoicer’s speech recognition features (http://www.bitsophia.com/BitVoicer.aspx), one Arduino board and one electret microphone (https://www.sparkfun.com/products/9964) to control a few LEDs.
The following fritzing schematic shows how I wired my Arduino board:
I’m also adding a few pictures and a YouTube video of the project running.
Unfortunately, the sketch I wrote for my first post is no longer supported by the new version of BitVoicer. Here is the new sketch:
#include <BitVoicer11.h>
//Instantiates the BitVoicerSerial class
BitVoicerSerial bvSerial = BitVoicerSerial();
//Stores true if the Audio Streaming Calibration tool
//is running
boolean sampleTest = false;
//Stores the data type retrieved by getData()
byte dataType = 0;
//Sets up the pins and default variables
int pinR = 3;
int pinY = 5;
int pinG = 6;
int lightLevel = 0;
void setup()
{
//Sets the analog reference to external (AREF pin)
//WARNING!!! If anything is conected to the AREF pin,
//this function MUST be called first. Otherwise, it will
//damage the board.
bvSerial.setAnalogReference(BV_EXTERNAL);
//Sets up the microcontroller to perform faster analog reads
//on the specified pin
bvSerial.setAudioInput(0);
//Starts serial communication at 115200 bps
Serial.begin(115200);
//Sets up the pinModes
pinMode(pinR, OUTPUT);
pinMode(pinY, OUTPUT);
pinMode(pinG, OUTPUT);
}
void loop()
{
//Captures audio and sends it to BitVoicer if the Audio
//Streaming Calibration Tool is running
if (sampleTest == true)
{
//The value passed to the function is the time
//(in microseconds) that the function has to wait before
//performing the reading. It is used to achieve about
//8000 readings per second.
bvSerial.processAudio(46);
}
//Captures audio and sends it to BitVoicer if the Speech
//Recognition Engine is running
if (bvSerial.engineRunning)
{
//The value passed to the function is the time
//(in microseconds) that the function has to wait before
//performing the reading. It is used to achieve about
//8000 readings per second.
bvSerial.processAudio(46);
}
}
//This function runs every time serial data is available
//in the serial buffer after a loop
void serialEvent()
{
//Reads the serial buffer and stores the received data type
dataType = bvSerial.getData();
//Changes the value of sampleTest if the received data was
//the start/stop sampling command
if (dataType == BV_COMMAND)
sampleTest = bvSerial.cmdData;
//Signals BitVoicer's Speech Recognition Engine to start
//listening to audio streams after the engineRunning status
//was received
if (dataType == BV_STATUS && bvSerial.engineRunning == true)
bvSerial.startStopListening();
//Checks if the data type is the same as the one in the
//Voice Schema
if (dataType == BV_STR)
setLEDs();
}
//Performs the LED changes according to the value in
//bvSerial.strData
void setLEDs()
{
if (bvSerial.strData == "wake")
{
digitalWrite(pinR, LOW);
digitalWrite(pinY, LOW);
digitalWrite(pinG, LOW);
digitalWrite(pinR, HIGH);
digitalWrite(pinY, HIGH);
digitalWrite(pinG, HIGH);
delay(200);
digitalWrite(pinR, LOW);
digitalWrite(pinY, LOW);
digitalWrite(pinG, LOW);
delay(200);
digitalWrite(pinR, HIGH);
digitalWrite(pinY, HIGH);
digitalWrite(pinG, HIGH);
delay(200);
digitalWrite(pinR, LOW);
digitalWrite(pinY, LOW);
digitalWrite(pinG, LOW);
delay(200);
digitalWrite(pinR, HIGH);
digitalWrite(pinY, HIGH);
digitalWrite(pinG, HIGH);
delay(200);
digitalWrite(pinR, LOW);
digitalWrite(pinY, LOW);
digitalWrite(pinG, LOW);
lightLevel = 0;
}
else if (bvSerial.strData == "sleep")
{
digitalWrite(pinR, LOW);
digitalWrite(pinY, LOW);
digitalWrite(pinG, LOW);
digitalWrite(pinR, HIGH);
digitalWrite(pinY, HIGH);
digitalWrite(pinG, HIGH);
delay(200);
digitalWrite(pinR, LOW);
digitalWrite(pinY, LOW);
digitalWrite(pinG, LOW);
delay(200);
digitalWrite(pinR, HIGH);
digitalWrite(pinY, HIGH);
digitalWrite(pinG, HIGH);
delay(200);
digitalWrite(pinR, LOW);
digitalWrite(pinY, LOW);
digitalWrite(pinG, LOW);
lightLevel = 0;
}
else if (bvSerial.strData == "RH")
{
digitalWrite(pinR, HIGH);
lightLevel = 255;
}
else if (bvSerial.strData == "RL")
{
digitalWrite(pinR, LOW);
lightLevel = 0;
}
else if (bvSerial.strData == "YH")
{
digitalWrite(pinY, HIGH);
lightLevel = 255;
}
else if (bvSerial.strData == "YL")
{
digitalWrite(pinY, LOW);
lightLevel = 0;
}
else if (bvSerial.strData == "GH")
{
digitalWrite(pinG, HIGH);
lightLevel = 255;
}
else if (bvSerial.strData == "GL")
{
digitalWrite(pinG, LOW);
lightLevel = 0;
}
else if (bvSerial.strData == "ALLON")
{
digitalWrite(pinR, HIGH);
digitalWrite(pinY, HIGH);
digitalWrite(pinG, HIGH);
lightLevel = 255;
}
else if (bvSerial.strData == "ALLOFF")
{
digitalWrite(pinR, LOW);
digitalWrite(pinY, LOW);
digitalWrite(pinG, LOW);
lightLevel = 0;
}
else if (bvSerial.strData == "brighter")
{
if (lightLevel < 255)
{
lightLevel += 85;
analogWrite(pinR, lightLevel);
analogWrite(pinY, lightLevel);
analogWrite(pinG, lightLevel);
}
}
else if (bvSerial.strData == "darker")
{
if (lightLevel > 0)
{
lightLevel -= 85;
analogWrite(pinR, lightLevel);
analogWrite(pinY, lightLevel);
analogWrite(pinG, lightLevel);
}
}
else
{
bvSerial.startStopListening();
bvSerial.sendToBV("ERROR:" + bvSerial.strData);
bvSerial.startStopListening();
}
}
The BitVoicer Voice Schema I used can be downloaded from: http://www.justbuss.xpg.com.br/BitVoicerTest2.zip (you need to have BitVoicer installed to be able open it).
Now I want to control a few things (lights and ceiling fan) at home. Suggestions on how to connect them to the Arduino are very welcome.
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