piezo

diff --git a/piezo/README b/piezo/README
index 4c3877f54224000f429d92025e98884906cf9a4c..ed76355a5c9f5376eba112579fb7c4822ac92c95 100644 (file)
--- a/piezo/README
+++ b/piezo/README
@@ -1,3 +1,3 @@
-There are 4/5 nice sketches bundled with arduino:
+There are 4/5 nice sketches bundled with Arduino IDE as examples:

 -> Digital : tone*
 -> Sensors: knock
 -> Digital : tone*
 -> Sensors: knock

diff --git a/piezo/piezo_1_tonePitchFollower/piezo_1_tonePitchFollower.ino b/piezo/piezo_1_tonePitchFollower/piezo_1_tonePitchFollower.ino
index 671f539913318b6d5e81da3a7d56cea9996ebaa1..c609b2918ae618d9dea20e9fe5b0b738aca8bb32 100644 (file)
--- a/piezo/piezo_1_tonePitchFollower/piezo_1_tonePitchFollower.ino
+++ b/piezo/piezo_1_tonePitchFollower/piezo_1_tonePitchFollower.ino
@@ -53,85 +53,4 @@ tra i valori 20hz e 20.000hz.
 3. Modificare lo script in modo che vengano emessi suoni solo quando
 una mano offusca leggermente la luce (il piezo non deve suonare
 se non c'e' un operatore a interagire con la fotoresistenza).
 3. Modificare lo script in modo che vengano emessi suoni solo quando
 una mano offusca leggermente la luce (il piezo non deve suonare
 se non c'e' un operatore a interagire con la fotoresistenza).

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-Soluzioni in fondo.
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-Soluzioni:
-// These constants won't change:
-const int sensorPin = A0;    // pin that the sensor is attached to
-const int ledPin = 9;        // pin that the LED is attached to
-
-// variables:
-int sensorValue = 0;         // the sensor value
-int sensorMin = 1023;        // minimum sensor value
-int sensorMax = 0;           // maximum sensor value
-
-void setup() {
-  // initialize serial communications (for debugging only):
-  Serial.begin(9600);
-    pinMode(13, OUTPUT);
-  digitalWrite(13, HIGH);
-
-  // calibrate during the first five seconds 
-  while (millis() < 5000) {
-    sensorValue = analogRead(sensorPin);
-
-    // record the maximum sensor value
-    if (sensorValue > sensorMax) {
-      sensorMax = sensorValue;
-    }
-
-    // record the minimum sensor value
-    if (sensorValue < sensorMin) {
-      sensorMin = sensorValue;
-    }
-  }
-
-  // signal the end of the calibration period
-  digitalWrite(13, LOW);
-}
-
-void loop() {
-  // read the sensor:
-  int sensorReading = analogRead(sensorPin);
-  // print the sensor reading so you know its range
-  Serial.println(sensorReading);
-  // map the analog input range (in this case, 400 - 1000 from the photoresistor)
-  // to the output pitch range (120 - 1500Hz)
-  // change the minimum and maximum input numbers below
-  // depending on the range your sensor's giving:
-  int thisPitch = map(sensorReading, sensorMin, sensorMax, 220, 3500);
-
-  // play the pitch:
-  if (sensorReading < sensorMax -50) {
-  tone(ledPin, thisPitch, 10);
-  }
-  delay(1);        // delay in between reads for stability
-}

 */
 */

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diff --git a/piezo/piezo_1_tonePitchFollower_final/piezo_1_tonePitchFollower_final.ino b/piezo/piezo_1_tonePitchFollower_final/piezo_1_tonePitchFollower_final.ino
new file mode 100644 (file)
index 0000000..bcc9290
--- /dev/null
+++ b/piezo/piezo_1_tonePitchFollower_final/piezo_1_tonePitchFollower_final.ino
@@ -0,0 +1,81 @@
+/*
+  Pitch follower
+ 
+ Emette un suono in base all'inuput di una fotoresistenza.
+ Con autocalibrazione e limite minimo di attivazione
+
+
+ circuit:
+ * 8-ohm speaker on digital pin 8
+ * photoresistor on analog 0 to 5V
+ * 4.7K resistor on analog 0 to ground
+ 
+ created 21 Jan 2010
+ modified 31 May 2012
+ by Tom Igoe, with suggestion from Michael Flynn
+ 2015 by eaman
+
+This example code is in the public domain.
+
+- http://www.dummies.com/how-to/content/how-to-make-an-instrument-with-the-arduino.html
+- https://www.arduino.cc/en/Tutorial/tonePitchFollower
+ 
+ */
+
+
+// These constants won't change:
+const int sensorPin = A0;    // pin that the sensor is attached to
+const int ledPin = 9;        // pin that the LED is attached to
+
+// variables:
+// Calibration
+int sensorValue = 0;         // the sensor value
+int sensorMin = 1023;        // minimum sensor value
+int sensorMax = 0;           // maximum sensor value
+
+// Runtime vars
+int sensorReading ;          // Analog value
+int thisPitch ;              // Note to play
+
+void setup() {
+  // initialize serial communications (for debugging only):
+  Serial.begin(9600);
+    pinMode(13, OUTPUT);
+  digitalWrite(13, HIGH);
+
+  // calibrate during the first five seconds 
+  while (millis() < 5000) {
+    sensorValue = analogRead(sensorPin);
+
+    // record the maximum sensor value
+    if (sensorValue > sensorMax) {
+      sensorMax = sensorValue;
+    }
+
+    // record the minimum sensor value
+    if (sensorValue < sensorMin) {
+      sensorMin = sensorValue;
+    }
+  }
+
+  // signal the end of the calibration period
+  digitalWrite(13, LOW);
+}
+
+void loop() {
+  // read the sensor:
+  sensorReading = analogRead(sensorPin);
+  // print the sensor reading so you know its range
+  Serial.println(sensorReading);
+  // map the analog input range (in this case, 400 - 1000 from the photoresistor)
+  // to the output pitch range (120 - 1500Hz)
+  // change the minimum and maximum input numbers below
+  // depending on the range your sensor's giving:
+  thisPitch = map(sensorReading, sensorMin, sensorMax, 220, 3500);
+
+  // play the pitch:
+  if (sensorReading < sensorMax -50) {
+  tone(ledPin, thisPitch, 10);
+  }
+  delay(1);        // delay in between reads for stability
+}