Talkie Walkie

Lusorobotica.com and EmbeddedDreams.com made a challenge to build a robot only with one servo, and this was what I came up with.

I used the sound sensor I’ve done a few days ago and a little paper-boat + a servo and a box and this is the result :)

This how the puppet works:

A hole was digger on a card box, and the micro servo is glued to the box as you can see.
One piece of paper is glued to the servo horn, and this will make the puppet talk movement.
Another piece of paper is glued to the box and it will be fixed and hold the puppet.

This is how the puppet is glued to the paper supports.   ;)

Arduino Sound Sensor

Finally I have some time to continue with this investigation and great improvements were achieved with the circuit provided by Ant:  http://www.rev-ed.co.uk/docs/picaxe_sound.pdf

First here are the photos deleted by mistake from flickr:

Headsets microphones

Electrec thingey inside.

The circuit

This is a closeup of the circuit, I´ve added a 10uF capacitor to stabilize the output signal (it´s the green cap on the right).

The problem here is that I can´t imagine myself soldering all this components onto a pcb, I would like to have at least two of these, four would be awesome.

Click the following button to see source code for Arduino and Processing

/* ****************************************************

Arduino Code

**************************************************** */

int analogValue;
int val;

void setup()
{
// start serial port at 9600 bps:
Serial.begin(9600);

}

void loop()
{
// read analog input
analogValue = analogRead(0);

// send values to processing
Serial.println(analogValue, DEC);

// pause for 10 milliseconds:
delay(10);

}

/* ****************************************************

Processing Code

**************************************************** */

// import the Processing serial library
import processing.serial.*;

// declare a font variable
PFont font48;

int linefeed = 10; // Linefeed in ASCII
Serial myPort; // The serial port

// value recieved from the serialport / arduino
int sensorValue;

// mapped value
float sensorValueMap;

// – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – Setup

void setup() {
myPort = new Serial(this, Serial.list()[0], 9600);

// read bytes into a buffer until you get a linefeed (ASCII 10):
myPort.bufferUntil(linefeed);

size (800, 600);
background (0);
//smooth();

// you need to have this font in your machine, if not go to
// Tools – Creat Font – and create your own font
font48 = loadFont(“alask_48.vlw”);

textFont(font48);

}

// – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – Serial Event

void serialEvent(Serial myPort) {
// read the serial buffer:
String myString = myPort.readStringUntil(linefeed);

// if you got any bytes other than the linefeed:
if (myString != null) {

myString = trim(myString);
//println(myString);
// split the string at the commas
// and convert the sections into integers:
int sensors[] = int(split(myString, ‘,’));

// print out the values you got:
for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
//print(“Sensor ” + sensorNum + “: ” + sensors[sensorNum] + “\n”);

// sensor
sensorValue = sensors[0];
//sensorValueSmooth = sensors[1];

}
}
}

// – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – Draw

void draw() {

// set the black backgrounf
background(0);

// run the displayText() function
displayText();

// map the recieved values
sensorValueMap = map(sensorValue, 0, 1024, 0, 800);

// draw a rectangle based on the variable sensorValueMap
rect (0, 100, width, sensorValueMap);
}

// – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – Display Text

void displayText() {

text(“Sensor Value”, 20, 80);
text(sensorValue, 450, 80);

}

// – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – Save image

void keyPressed(){
if(key==’s’)
saveFrame(“sound-######.png”);
}