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I cut the top off the float ball and removed the stem as well. I cut out a round piece of particle board and drilled a hole in the middle to fit inside. I then glued the 4 mercury switches down on the particle board. I then wired all 4 of them along with the toggle switch in series, which I connected to the sound chip. The sound will only play if the toggle switch is on, and the device is held level. All 4 mercury switches must have the ball of liquid mercury touching the two leads on the inside for the sound to play. A tilt of only a couple degrees will break the circuit.
== '''Final Project''' ==
<br>
[[Image:Board1.jpg]]
[[Image:Board2.jpg]]
[[Image:LED1.jpg]]
[[Image:LED2.jpg]]
[[Image:Mounted.jpg]]
[[Image:Mounted2.jpg]]
[[Image:Wtf.jpg]]
Demonstration Video:
http://www.youtube.com/watch?v=FLu9jkhtI2Q
Materials:
Project Box 3"x5", Freeduino, Old Analog flight joystick 15 pin, 15 pin solderable female connector, Toggle Switch, 9v Battery, 35 red LED's (only 25 used for project), a 2" 8 ohm speaker, An unprinted circuit board, screws, a whole lot of wire, and the rest of my solder.
After revisions to my project due to feedback from my Instructor and Ta, I have decided to make an instrument spanning two octaves starting on c4 and ending on b5. The sound circuit will be very simple, going from digital output pin 2 of the arduino through a 100 ohm resistor, and one capacitor into the positive terminal of the speaker, and the other speaker terminal going to ground. I am going to make a 5x7 led matrix that will utilize a 5x5 portion for the project. The LED's and the sound circuit will be mounted on an unprinted circuit board. This circuit board has 19 one inch or so pieces of stiff wire soldered into it to act as pins, so the whole circuit board simply plugs directly into the top of the freeduino. There are 5 analog inputs, 11 digital outputs, 1 +5v, 2 Gnd. The control of the device is an analog joystick with x and y axis, 2 buttons, and an adjustment wheel that I am using as a third button. There will be three different modes of interaction: In Free play mode the user only has to move the joystick around on the x and y axis to produce the respective tones. In selective mode the user will move the stick to any position, but the sound will only be produced when the user presses the trigger button. For demo mode, the user simply pushes the top button and a preprogramed melody will play.
Melody Demo:
Uppercase letters are sharp, lowercase are normal notes.
|-C---C-----|-d-C-d-C-----|-d-C-d------|----------------|
|---b----F--|----------b--|--------F---|-b-a-b-a-G-b-a--|
Actual Used Code:
/*
Vis 147a Final Project
"Analog Joystick as an instrument"
Written by Mike Teall
*/
//initializing both indexes
int oldindex = 0;
int oldindex2 = 0;
//my array of frequencies from c to b over two octaves, with one dead zone in the middle
int myTones[] = {262, 277, 294, 311, 330, 349, 370, 392,
415, 440, 466, 494, 0, 523, 554, 587, 622, 659,
699, 740, 784, 830, 880, 932, 988};
//this array is holding the pin numbers driving the row of my led matrix
int myRowPins[] = {3, 4, 5, 6, 7};
//this array is holding the pin numbers driving the Column of my led matrix
int myColPins[] = {9, 10, 11, 12, 13};
//this array is holding the indices to notes stored in myTones for the pre-programmed
//tune
int myTune[] = {14, 11, 14, 6, 15, 14, 15, 14, 11, 15, 14, 15, 6, 11, 9, 11, 9, 8, 11, 9};
//these are note durations and used to control loop speed during pre-programmed tune
int durations[] = {100, 100, 200, 400, 100, 100, 100, 200, 400, 100, 100, 200, 400, 100, 100, 100, 100, 100, 100, 400};
//Initialization Routine
void setup() {
// initialize serial communications (for debugging only):
Serial.begin(9600);
// definining these digital pins as outputs
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);
pinMode(13, OUTPUT);
//Initializing Row Pins to High
digitalWrite(3, HIGH);
digitalWrite(4, HIGH);
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(7, HIGH);
}
//Main Program Loop
void loop() {
// read the sensors:
int val = analogRead(0);
int val2 = analogRead(1);
int val3 = analogRead(2);
int val4 = analogRead(3);
int val5 = analogRead(4);
//map sensor inputs to useful ranges
int selector = map(val3, 1, 850, 0, 1);
int button1 = map(val4, 1, 850, 0, 1);
int button2 = map(val5, 1, 850, 0, 1);
int index = map(val, 1, 850, 0, 4);
int index2 = map(val2, 1, 850, 0, 4);
int index3 = index2*5;
//continuous play mode
if (selector == 0)
{
if ((index != oldindex) || (index2 != oldindex2))
{
//turn off old led, turn on new led
digitalWrite(myColPins[oldindex], LOW);
digitalWrite(myRowPins[oldindex2], HIGH);
digitalWrite(myColPins[index], HIGH);
digitalWrite(myRowPins[index2], LOW);
}
//choose a tone from the myTones array
int thisPitch = myTones[index+index3];
//Serial.println(button2);
// play the pitch:
tone(2, thisPitch, 10);
//keep track of old index values so we can turn off the old led in case of change
oldindex = index;
oldindex2 = index2;
}
//this is trigger mode, where no sound will play unless trigger is pulled
if (selector == 1)
{
if ((index != oldindex) || (index2 != oldindex2))
{
digitalWrite(myColPins[oldindex], LOW);
digitalWrite(myRowPins[oldindex2], HIGH);
digitalWrite(myColPins[index], HIGH);
digitalWrite(myRowPins[index2], LOW);
}
//selects tone in case trigger is pulled
int thisPitch = myTones[index+index3];
//check trigger
if (button1 == 0)
{
//trigger pulled, play tone
tone(2, thisPitch, 10);
}
oldindex = index;
oldindex2 = index2;
}
//This is the pre-programmed routine of "Final Countdown"
//check button
if (button2 == 0)
{
oldindex = 2;
oldindex2 = 2;
//for loop steps through the myTune array to choose indices for tones
for (int i=0; i<20; i++)
{
//index for columns is i div 5
//index for rows is i % 5
index = myTune[i]/5;
index2 = myTune[i]%5;
digitalWrite(myColPins[oldindex2],LOW);
digitalWrite(myRowPins[oldindex],HIGH);
digitalWrite(myColPins[index2],HIGH);
digitalWrite(myRowPins[index],LOW);
//playing the current note of the pre programmed sequence
tone(2, myTones[myTune[i]], (durations[i]*2));
delay (durations[i]*2);
oldindex = index;
oldindex2 = index2;
//Serial.println(index2);
}
//clears last light from tune sequence
digitalWrite(myColPins[oldindex2],LOW);
digitalWrite(myRowPins[oldindex],HIGH);
}
}
== ''Field Research Listed Below'': ==