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--- pm:prj2023:tmiu:decibelmeter [2023/05/07 21:02]
mircea.hristea [Hardware Design]
+++ pm:prj2023:tmiu:decibelmeter [2023/05/29 17:50] (current)
mircea.hristea [Concluzii]
@@ Line 10: / Line 10: @@
 Utilizam un modul microfon pentru captarea sunetului si o placuta Arduino Uno R3 pentru procesarea lui, in functie de intensitatea sunetului se va aprinde secvential un ansamblu de leduri si se va transmite valoarea in dB unui ecran LCD.
-{{:pm:prj2023:tmiu:diagrama.png?200|}}
+{{:pm:prj2023:tmiu:diagrama.png?300x200}}
 </note>
@@ Line 17: / Line 17: @@
 <note tip>
-Piese utilizate(subject to changes):
+**Componente utilizate:**
   *Arduino Uno R3
   *Breadboard
   *LEDs
-  *Rezistente
+  *Cabluri
+  *Rezistente
   *Modul microfon
   *Display LCD
+**Schema hardware:**\\
+{{:pm:prj2023:tmiu:decibelmeter_hw_scheme.png?500x300}}
 </note>
@@ Line 31: / Line 34: @@
 <note tip>
-**work in progress**
+<file c++>
+#include <Wire.h>
+#include <LiquidCrystal_I2C.h>
+LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2);
+const int sampleWindow = 50;
+unsigned int sample;
+#define SENSOR_PIN A0
+#define PIN_QUIET1 3
+#define PIN_QUIET2 4
+#define PIN_MODERATE1 5
+#define PIN_MODERATE2 6
+#define PIN_LOUD1 7
+#define PIN_LOUD2 8
+void setup ()
+{
+  pinMode (SENSOR_PIN, INPUT);
+  pinMode(PIN_QUIET1, OUTPUT);
+  pinMode(PIN_QUIET2, OUTPUT);
+  pinMode(PIN_MODERATE1, OUTPUT);
+  pinMode(PIN_MODERATE2, OUTPUT);
+  pinMode(PIN_LOUD1, OUTPUT);
+  pinMode(PIN_LOUD2, OUTPUT);
+  digitalWrite(PIN_QUIET1, LOW);
+  digitalWrite(PIN_QUIET2, LOW);
+  digitalWrite(PIN_MODERATE1, LOW);
+  digitalWrite(PIN_MODERATE2, LOW);
+  digitalWrite(PIN_LOUD1, LOW);
+  digitalWrite(PIN_LOUD2, LOW);
+  lcd.backlight();
+  delay(20);
+  lcd.init();
+}
+void loop ()
+{
+   unsigned long startMillis= millis();
+   float peakToPeak = 0;
+   unsigned int signalMax = 0;
+   unsigned int signalMin = 1024;
+   while (millis() - startMillis < sampleWindow)
+   {
+      sample = analogRead(SENSOR_PIN);
+      if (sample < 1024)
+      {
+         if (sample > signalMax)
+         {
+            signalMax = sample;
+         }
+         else if (sample < signalMin)
+         {
+            signalMin = sample;
+         }
+      }
+   }
+   peakToPeak = signalMax - signalMin;
+   int db = map(peakToPeak,0,500,28,85);
+  lcd.setCursor(0, 0);
+  lcd.print("Loudness: ");
+  lcd.print(db);
+  lcd.print("dB");
+  if(db <= 30){
+    digitalWrite(PIN_QUIET1, LOW);
+    digitalWrite(PIN_QUIET2, LOW);
+    digitalWrite(PIN_MODERATE1, LOW);
+    digitalWrite(PIN_MODERATE2, LOW);
+    digitalWrite(PIN_LOUD1, LOW);
+    digitalWrite(PIN_LOUD2, LOW);
+  }
+  else if (db > 30 && db < 35)
+  {
+    digitalWrite(PIN_QUIET1, HIGH);
+    digitalWrite(PIN_QUIET2, LOW);
+    digitalWrite(PIN_MODERATE1, LOW);
+    digitalWrite(PIN_MODERATE2, LOW);
+    digitalWrite(PIN_LOUD1, LOW);
+    digitalWrite(PIN_LOUD2, LOW);
+  }
+  else if (db >= 35 && db < 40)
+  {
+    digitalWrite(PIN_QUIET1, HIGH);
+    digitalWrite(PIN_QUIET2, HIGH);
+    digitalWrite(PIN_MODERATE1, LOW);
+    digitalWrite(PIN_MODERATE2, LOW);
+    digitalWrite(PIN_LOUD1, LOW);
+    digitalWrite(PIN_LOUD2, LOW);
+  }
+  else if (db >= 40 && db < 45)
+  {
+    digitalWrite(PIN_QUIET1, HIGH);
+    digitalWrite(PIN_QUIET2, HIGH);
+    digitalWrite(PIN_MODERATE1, HIGH);
+    digitalWrite(PIN_MODERATE2, LOW);
+    digitalWrite(PIN_LOUD1, LOW);
+    digitalWrite(PIN_LOUD2, LOW);
+  }
+  else if (db >= 45 && db < 50)
+  {
+    digitalWrite(PIN_QUIET1, HIGH);
+    digitalWrite(PIN_QUIET2, HIGH);
+    digitalWrite(PIN_MODERATE1, HIGH);
+    digitalWrite(PIN_MODERATE2, HIGH);
+    digitalWrite(PIN_LOUD1, LOW);
+    digitalWrite(PIN_LOUD2, LOW);
+  }
+  else if (db >= 50 && db < 60)
+  {
+    digitalWrite(PIN_QUIET1, HIGH);
+    digitalWrite(PIN_QUIET2, HIGH);
+    digitalWrite(PIN_MODERATE1, HIGH);
+    digitalWrite(PIN_MODERATE2, HIGH);
+    digitalWrite(PIN_LOUD1, HIGH);
+    digitalWrite(PIN_LOUD2, LOW);
+  }
+  else if (db >= 65)
+  {
+    digitalWrite(PIN_QUIET1, HIGH);
+    digitalWrite(PIN_QUIET2, HIGH);
+    digitalWrite(PIN_MODERATE1, HIGH);
+    digitalWrite(PIN_MODERATE2, HIGH);
+    digitalWrite(PIN_LOUD1, HIGH);
+    digitalWrite(PIN_LOUD2, HIGH);
+  }
+   delay(200);
+   lcd.clear();
+}
+</file>
+Dezvoltat folosind Arduino IDE, am utilizat "Wire.h" si "LiquidCrystal_I2C" pentru interactiunea cu ecranul LCD.
 </note>
@@ Line 37: / Line 187: @@
 <note tip>
-**work in progress**
+Realizarea unui decibelmetru functional, usor de folosit, capabil sa lucreze in intervale de sunet uzuale (30dB-65dB).
 </note>
@@ Line 49: / Line 199: @@
 <note tip>
-Finished initial doc. (5/6/2023)
+Finished initial doc. (5/6/2023) \\
+Added hardware schematic and source code of the project. (5/26/2023)
 </note>