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ゴム板3枚、ドラムスティック

これバシバシ叩くと音がなるイメージ
ドラマーじゃないから楽器屋は恥ずかしい><

圧電素子

ArduinoでKnock!!
プログラムがブラウザでできるようになっとる
参考

そして、グルーガン攻め

コード

Piezoelectric.c

// these constants won't change:
const int ledPin = 13;      // led connected to digital pin 13
const int knockSensor1 = A0; // the piezo is connected to analog pin 0
const int threshold1 = 10; // threshold value to decide when the detected sound is a knock or not
const int knockSensor2 = A2; // the piezo is connected to analog pin 0
const int threshold2 = 10; // threshold value to decide when the detected sound is a knock or not
const int knockSensor3 = A4; // the piezo is connected to analog pin 0
const int threshold3 = 10; // threshold value to decide when the detected sound is a knock or not

# define BEATTIME 100 //音を出している時間(msec)
# define SPEAKER 12 //スピーカーの出力ピン番号 

// these variables will change:
int sensorReading1 = 0;      // variable to store the value read from the sensor pin
int sensorReading2 = 0;      // variable to store the value read from the sensor pin
int sensorReading3 = 0;      // variable to store the value read from the sensor pin

int ledState = LOW;         // variable used to store the last LED status, to toggle the light

void setup() {
  pinMode(ledPin, OUTPUT); // declare the ledPin as as OUTPUT
  Serial.begin(9600);       // use the serial port
}

void loop() {
  // read the sensor and store it in the variable sensorReading:
  sensorReading1 = analogRead(knockSensor1);
  sensorReading2 = analogRead(knockSensor2);
  sensorReading3 = analogRead(knockSensor3);

  // if the sensor reading is greater than the threshold:
  if (sensorReading1 >= threshold1) {
    // toggle the status of the ledPin:
    ledState = !ledState;
    // update the LED pin itself:
    digitalWrite(ledPin, ledState);
    // send the string "Knock!" back to the computer, followed by newline
    Serial.println("Knock!");
    tone(SPEAKER,330,BEATTIME) ; // ミ
  }
  
  // if the sensor reading is greater than the threshold:
  if (sensorReading2 >= threshold2) {
    // toggle the status of the ledPin:
    ledState = !ledState;
    // update the LED pin itself:
    digitalWrite(ledPin, ledState);
    // send the string "Knock!" back to the computer, followed by newline
    Serial.println("Knock!");
    tone(SPEAKER,300,BEATTIME) ; // ミ
  }
  
  // if the sensor reading is greater than the threshold:
  if (sensorReading3 >= threshold3) {
    // toggle the status of the ledPin:
    ledState = !ledState;
    // update the LED pin itself:
    digitalWrite(ledPin, ledState);
    // send the string "Knock!" back to the computer, followed by newline
    Serial.println("Knock!");
    tone(SPEAKER,100,BEATTIME) ; // ミ
  }
  
  delay(40);  // delay to avoid overloading the serial port buffer
  
  Serial.println(sensorReading3);
  //Serial.println(sensorReading2);
}

こんな感じ

久々にArduino#Arduino #圧電素子 pic.twitter.com/lWXvb8UNqK
— いまうじ (@imauji) 2017年6月12日

残りの予定

MIDI化　hairless
アプリかなにかでアサインした音出す
MIDI信号を映像側にも送る
精度の向上