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Arduino Jeopardy Buzzer Source Code
#include "musical_notes.h"
const int speakerPin = 3;
const int resetPin = 5;
const int player1 = 12;
const int player2 = 10;
const int player3 = 9;
const int pLight1 = 13;
const int pLight2 = 11;
const int pLight3 = 8;
const int timer30 = 4;
//timer60 = neither 30 or 90 set
const int timer90 = 6;
unsigned long answerTime = 0;
void setup() {
pinMode( speakerPin, OUTPUT );
pinMode( resetPin, INPUT );
pinMode( player1, INPUT );
pinMode( player2, INPUT );
pinMode( player3, INPUT );
pinMode( pLight1, OUTPUT );
pinMode( pLight2, OUTPUT );
pinMode( pLight3, OUTPUT );
pinMode( timer30, INPUT );
pinMode( timer90, INPUT );
resetGame();
}
void loop() {
unsigned long currentTime = millis();
if ( digitalRead( resetPin ) ) {
resetGame();
return;
}
if ( !answerTime ) {
int p1Light = digitalRead( player1 );
int p2Light = digitalRead( player2 );
int p3Light = digitalRead( player3 );
if ( HIGH == p1Light ) {
digitalWrite( pLight1, HIGH );
answeringTone();
answerTime = currentTime;
} else if ( HIGH == p2Light ) {
digitalWrite( pLight2, HIGH );
answeringTone();
answerTime = currentTime;
} else if ( HIGH == p3Light ) {
digitalWrite( pLight3, HIGH );
answeringTone();
answerTime = currentTime;
}
} else {
int thirty = digitalRead( timer30 );
int ninety = digitalRead( timer90 );
unsigned long timeDiff = currentTime - answerTime;
if ( thirty && ( timeDiff > 30000 ) ) {
// 30 Seconds to answer
outOfTimeTone();
resetGame();
return;
} else if ( ninety && ( timeDiff > 90000 ) ) {
// 90 Seconds to answer
outOfTimeTone();
resetGame();
return;
} else if ( !thirty && !ninety && timeDiff > 60000 ) {
// 60 Seconds to answer
outOfTimeTone();
resetGame();
return;
}
}
}
void resetGame() {
digitalWrite( pLight1, LOW );
digitalWrite( pLight2, LOW );
digitalWrite( pLight3, LOW );
answerTime = 0;
}
/*
* From Erik Kringen: https://mycontraption.com/sound-effects-with-and-arduino/
*/
void beep ( int speakerPin, float noteFrequency, long noteDuration ) {
int x;
// Convert the frequency to microseconds
float microsecondsPerWave = 1000000 / noteFrequency;
// Calculate how many HIGH/LOW cycles there are per millisecond
float millisecondsPerCycle = 1000 / ( microsecondsPerWave * 2 );
// Multiply noteDuration * number or cycles per millisecond
float loopTime = noteDuration * millisecondsPerCycle;
// Play the note for the calculated loopTime.
for ( x=0; x < loopTime; x++ ) {
digitalWrite( speakerPin, HIGH );
delayMicroseconds( microsecondsPerWave );
digitalWrite( speakerPin, LOW );
delayMicroseconds( microsecondsPerWave );
}
}
void answeringTone() {
beep( speakerPin, note_A5, 200 );
delay(15);
beep( speakerPin, note_A5, 100 );
delay(15);
beep( speakerPin, note_A5, 200 );
}
void outOfTimeTone() {
beep( speakerPin, note_Ab3, 100 );
delay(15);
beep( speakerPin, note_Ab3, 100 );
delay(15);
beep( speakerPin, note_Ab3, 100 );
delay(15);
beep( speakerPin, note_Ab3, 700 );
}
// Reference: This list was adapted from the table located here:
// http://www.phy.mtu.edu/~suits/notefreqs.html
const float note_C0 = 16.35; //C0
const float note_Db0 = 17.32; //C#0/Db0
const float note_D0 = 18.35; //D0
const float note_Eb0 = 19.45; //D#0/Eb0
const float note_E0 = 20.6; //E0
const float note_F0 = 21.83; //F0
const float note_Gb0 = 23.12; //F#0/Gb0
const float note_G0 = 24.5; //G0
const float note_Ab0 = 25.96; //G#0/Ab0
const float note_A0 = 27.5; //A0
const float note_Bb0 = 29.14; //A#0/Bb0
const float note_B0 = 30.87; //B0
const float note_C1 = 32.7; //C1
const float note_Db1 = 34.65; //C#1/Db1
const float note_D1 = 36.71; //D1
const float note_Eb1 = 38.89; //D#1/Eb1
const float note_E1 = 41.2; //E1
const float note_F1 = 43.65; //F1
const float note_Gb1 = 46.25; //F#1/Gb1
const float note_G1 = 49; //G1
const float note_Ab1 = 51.91; //G#1/Ab1
const float note_A1 = 55; //A1
const float note_Bb1 = 58.27; //A#1/Bb1
const float note_B1 = 61.74; //B1
const float note_C2 = 65.41; //C2 (Middle C)
const float note_Db2 = 69.3; //C#2/Db2
const float note_D2 = 73.42; //D2
const float note_Eb2 = 77.78; //D#2/Eb2
const float note_E2 = 82.41; //E2
const float note_F2 = 87.31; //F2
const float note_Gb2 = 92.5; //F#2/Gb2
const float note_G2 = 98; //G2
const float note_Ab2 = 103.83; //G#2/Ab2
const float note_A2 = 110; //A2
const float note_Bb2 = 116.54; //A#2/Bb2
const float note_B2 = 123.47; //B2
const float note_C3 = 130.81; //C3
const float note_Db3 = 138.59; //C#3/Db3
const float note_D3 = 146.83; //D3
const float note_Eb3 = 155.56; //D#3/Eb3
const float note_E3 = 164.81; //E3
const float note_F3 = 174.61; //F3
const float note_Gb3 = 185; //F#3/Gb3
const float note_G3 = 196; //G3
const float note_Ab3 = 207.65; //G#3/Ab3
const float note_A3 = 220; //A3
const float note_Bb3 = 233.08; //A#3/Bb3
const float note_B3 = 246.94; //B3
const float note_C4 = 261.63; //C4
const float note_Db4 = 277.18; //C#4/Db4
const float note_D4 = 293.66; //D4
const float note_Eb4 = 311.13; //D#4/Eb4
const float note_E4 = 329.63; //E4
const float note_F4 = 349.23; //F4
const float note_Gb4 = 369.99; //F#4/Gb4
const float note_G4 = 392; //G4
const float note_Ab4 = 415.3; //G#4/Ab4
const float note_A4 = 440; //A4
const float note_Bb4 = 466.16; //A#4/Bb4
const float note_B4 = 493.88; //B4
const float note_C5 = 523.25; //C5
const float note_Db5 = 554.37; //C#5/Db5
const float note_D5 = 587.33; //D5
const float note_Eb5 = 622.25; //D#5/Eb5
const float note_E5 = 659.26; //E5
const float note_F5 = 698.46; //F5
const float note_Gb5 = 739.99; //F#5/Gb5
const float note_G5 = 783.99; //G5
const float note_Ab5 = 830.61; //G#5/Ab5
const float note_A5 = 880; //A5
const float note_Bb5 = 932.33; //A#5/Bb5
const float note_B5 = 987.77; //B5
const float note_C6 = 1046.5; //C6
const float note_Db6 = 1108.73; //C#6/Db6
const float note_D6 = 1174.66; //D6
const float note_Eb6 = 1244.51; //D#6/Eb6
const float note_E6 = 1318.51; //E6
const float note_F6 = 1396.91; //F6
const float note_Gb6 = 1479.98; //F#6/Gb6
const float note_G6 = 1567.98; //G6
const float note_Ab6 = 1661.22; //G#6/Ab6
const float note_A6 = 1760; //A6
const float note_Bb6 = 1864.66; //A#6/Bb6
const float note_B6 = 1975.53; //B6
const float note_C7 = 2093; //C7
const float note_Db7 = 2217.46; //C#7/Db7
const float note_D7 = 2349.32; //D7
const float note_Eb7 = 2489.02; //D#7/Eb7
const float note_E7 = 2637.02; //E7
const float note_F7 = 2793.83; //F7
const float note_Gb7 = 2959.96; //F#7/Gb7
const float note_G7 = 3135.96; //G7
const float note_Ab7 = 3322.44; //G#7/Ab7
const float note_A7 = 3520; //A7
const float note_Bb7 = 3729.31; //A#7/Bb7
const float note_B7 = 3951.07; //B7
const float note_C8 = 4186.01; //C8
const float note_Db8 = 4434.92; //C#8/Db8
const float note_D8 = 4698.64; //D8
const float note_Eb8 = 4978.03; //D#8/Eb8
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