X-Git-Url: http://git.piffa.net/web?a=blobdiff_plain;f=piezo%2Fpiezo_1_tonePitchFollower%2Fpiezo_1_tonePitchFollower.ino;h=c609b2918ae618d9dea20e9fe5b0b738aca8bb32;hb=0c04d0b910d1566ae3fa4c20f8cb6e2c1c0cbb79;hp=e74c7b343449a5c366c457ebb127c5887d99dcc4;hpb=54de1d245a98a8032e8c41089158321f6be58b1c;p=sketchbook_andrea

diff --git a/piezo/piezo_1_tonePitchFollower/piezo_1_tonePitchFollower.ino b/piezo/piezo_1_tonePitchFollower/piezo_1_tonePitchFollower.ino
index e74c7b3..c609b29 100644
--- a/piezo/piezo_1_tonePitchFollower/piezo_1_tonePitchFollower.ino
+++ b/piezo/piezo_1_tonePitchFollower/piezo_1_tonePitchFollower.ino
@@ -13,12 +13,18 @@
  by Tom Igoe, with suggestion from Michael Flynn
 
 This example code is in the public domain.
- 
- http://arduino.cc/en/Tutorial/Tone2
+
+- 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
+
+
 void setup() {
   // initialize serial communications (for debugging only):
   Serial.begin(9600);
@@ -26,22 +32,25 @@ void setup() {
 
 void loop() {
   // read the sensor:
-  int sensorReading = analogRead(A0);
+  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, 400, 1000, 120, 1500);
+  int thisPitch = map(sensorReading, 300, 900, 220, 3500);
 
   // play the pitch:
-  tone(9, thisPitch, 10);
+  tone(ledPin, thisPitch, 10);
   delay(1);        // delay in between reads for stability
 }
 
-
-
-
-
-
+/* Domande:
+1. Modificare l'estensione del range di frequenza del piezo
+tra i valori 20hz e 20.000hz.
+2. Inserire l'auto calibrazione
+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).
+*/