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@dorkrawk

dorkrawk/therem.ino

Last active Aug 29, 2015
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Theremino. Code for a custom Ardunio based instrument I designed.
#define trigPin 13
#define echoPin 12
#define tonePin 8
#define ledPin 7
#define keyPin 0
#include "notes.h"
const int threshold = 200;
int notes[] = { NOTE_B0,NOTE_C1,NOTE_CS1,NOTE_D1,NOTE_DS1,NOTE_E1,NOTE_F1,NOTE_FS1,NOTE_G1,NOTE_GS1,NOTE_A1,NOTE_AS1,NOTE_B1,NOTE_C2,NOTE_CS2,NOTE_D2,NOTE_DS2,NOTE_E2,NOTE_F2,NOTE_FS2,NOTE_G2,NOTE_GS2,NOTE_A2, NOTE_AS2,NOTE_B2, NOTE_C3, NOTE_CS3,NOTE_D3, NOTE_DS3,NOTE_E3, NOTE_F3, NOTE_FS3,NOTE_G3, NOTE_GS3,NOTE_A3, NOTE_AS3,NOTE_B3, NOTE_C4, NOTE_CS4,NOTE_D4, NOTE_DS4,NOTE_E4, NOTE_F4, NOTE_FS4,NOTE_G4, NOTE_GS4,NOTE_A4, NOTE_AS4,NOTE_B4, NOTE_C5, NOTE_CS5,NOTE_D5, NOTE_DS5,NOTE_E5, NOTE_F5, NOTE_FS5,NOTE_G5, NOTE_GS5,NOTE_A5, NOTE_AS5,NOTE_B5, NOTE_C6, NOTE_CS6, NOTE_D6, NOTE_DS6, NOTE_E6, NOTE_F6, NOTE_FS6, NOTE_G6, NOTE_GS6, NOTE_A6, NOTE_AS6, NOTE_B6, NOTE_C7, NOTE_CS7, NOTE_D7, NOTE_DS7, NOTE_E7, NOTE_F7, NOTE_FS7, NOTE_G7, NOTE_GS7, NOTE_A7, NOTE_AS7, NOTE_B7, NOTE_C8, NOTE_CS8, NOTE_D8, NOTE_DS8 };
void setup() {
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(ledPin, OUTPUT);
}
void loop() {
long duration, distance;
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
int sensorReading = analogRead(keyPin);
if (sensorReading > threshold){
int pitchIndex = (distance / 4) + 24;
int pitch = notes[pitchIndex];
tone(tonePin, pitch);
Serial.print(pitch);
Serial.println(" hz");
digitalWrite(ledPin, HIGH);
}
else {
digitalWrite(ledPin, LOW);
noTone(tonePin);
}
delay(10);
}
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