Michelangelo Guarise
Published

UDOO Smart Theremin

Your next musical instrument

Full instructions provided1,639
UDOO Smart Theremin

Things used in this project

Hardware components

UDOO DUAL
UDOO DUAL
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Story

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Code

code.txt

C/C++
//SRF05//
#define ECHOPIN 2  // Pin to receive echo pulse
#define TRIGPIN 3  // Pin to send trigger pulse


int msg = 0;

void setup(){
  Serial.begin(9600);
  pinMode(ECHOPIN, INPUT);
  pinMode(TRIGPIN, OUTPUT);
}

void loop(){
  digitalWrite(TRIGPIN, LOW);                   // Set the trigger pin to low for 2uS
  delayMicroseconds(2);
  digitalWrite(TRIGPIN, HIGH);                  // Send a 10uS high to trigger ranging
  delayMicroseconds(10);
  digitalWrite(TRIGPIN, LOW);                   // Send pin low again
  int distance = pulseIn(ECHOPIN, HIGH);        // Read in times pulse
  // distance= distance/58;                        // Calculate distance from time of pulse                 
  if(distance > 4100)
    distance = 4100;
  if(distance < 200)
    distance = 200;
  msg = map(distance, 200, 4100, 0, 255);
  Serial.write(msg);                     
  delay(10);                                    // Wait 10mS before next ranging
}

Github

https://github.com/UDOOProjects/Smart-Theremin

Credits

Michelangelo Guarise

Michelangelo Guarise

7 projects • 54 followers
Founder @ volumio.org , passionate maker, unpredictable developer, misunderstood creative. I do stuff, I build things.

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