transformeringar

Sound notes!

2006-05-22T05:21:00.000-07:00

Pablo showed the possibilitys to program and make different sounds. Hopfully we can make at least three sounds that we like and use them with the calculator.

2006-05-17T06:14:00.000-07:00

We went out searching for fun and cheap stuff to use for the course.
One good place for electronical toys was the China market in Skanstull. Her we found lots of toys with simple functions that can be usefull. For instans radio controled cars in different shapes, and also a toy birds nest with a movement detector in it.

The Sharp compet CS-2630

2006-05-12T02:39:00.000-07:00

We got hold of an old electronic printing calculator that is was used for simple calculating and printing receits. It´s possible to print red and black numbers and different signs. Our idea is to somehow use the printing calculator to produce sound threw pushing the buttons like a music instrument. At the same time we would like the calculator to print some kind of partitur or note paper from the printer.

With a little help from Åsmund we figured out how the digits where produced and how the buttons worked. By pushing and in the same time connecting two spots, the digits came up on the screen. We gave each dashboard output a number, from 1 to 27. Then we combined two of the numbers to get a certain digit.

Producing sound

2006-05-12T02:19:00.000-07:00

The first thing we tried connecting to the Arduino board (After the L.A.Ds) was little speakers. One we had from an electronical flyer that plays a beat when pushing a button, the other we found in the rubbish bin for electronical equipment.
We found that the speakers produced different sounds when we programmed the arduino in different ways. With this we could program beats and sounds and decide the rhythm and pace.

Beat 1:

int ledPin = 10;int ledPin2 = 9; // LED connected to digital pin 13int time = 0;int c = 0;int dir = 1 ;
void setup(){ pinMode(ledPin, OUTPUT); // sets the digital pin as output pinMode(ledPin2, OUTPUT);
}

void loop(){ time = time+1; digitalWrite(ledPin, HIGH); // sets the LED on delay(time); // waits for a second digitalWrite(ledPin, LOW); // sets the LED off delay(time); // waits for a second if(time==15) { time=0; }
c += dir ; analogWrite(ledPin2, c) ; if (c >= 255) dir = - 1 ; if (c <= 0) dir = 1 ;
}

Beat 2:

int ledPin = 13;int speakerOut = 9; int volume = 300; // maximum volume is 1000byte names[] = {'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C'}; int tones[] = {1915, 1700, 1519, 1432, 1275, 1136, 1014, 956};byte melody[] = "2d2a1f2c2d2a2d2c2f2d2a2c2d2a1f2c2d2a2a2g2p8p8p8p";// count length: 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0// 10 20 30int count = 0;int count2 = 0;int count3 = 0;int MAX_COUNT = 24;int statePin = LOW;void setup() { pinMode(ledPin, OUTPUT); }void loop() { analogWrite(speakerOut, 0); for (count = 0; count < MAX_COUNT; count++) { statePin = !statePin; digitalWrite(ledPin, statePin); for (count3 = 0; count3 <= (melody[count*2] - 48) * 30; count3++) { for (count2=0;count2<8;count2++) { if (names[count2] == melody[count*2 + 1]) { analogWrite(speakerOut,volume); delayMicroseconds(tones[count2]); analogWrite(speakerOut, 0); delayMicroseconds(tones[count2]); } if (melody[count*2 + 1] == 'p') { // make a pause of a certain size analogWrite(speakerOut, 0); delayMicroseconds(500); } } } }}

Start of the course

2006-05-03T00:36:00.000-07:00

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