Sparkfun Sound Detector VS. HC-SR04 Ultrasonic

1int trigPin = 11;
2int echoPin = 12;
3
4long duration;
5int distance;
6
7void  setup() {
8
9pinMode(trigPin, OUTPUT); 
10pinMode(echoPin, INPUT);
11Serial.begin(9600);  
12
13}
14void loop() {
15
16digitalWrite(trigPin, LOW);
17delayMicroseconds(2);
18
19digitalWrite(trigPin,  HIGH);
20delayMicroseconds(10);
21digitalWrite(trigPin, LOW);
22
23duration  = pulseIn(echoPin, HIGH);
24distance= duration*0.034/2;
25
26Serial.print("Distance:  ");
27Serial.println(distance);
28} 

1/******************************************************************************
2*   sound_detector_demo.ino
3* Sound detector sample sketch
4* Byron Jacquot @ SparkFun   Electronics
5* February 19, 2014
6* https://github.com/sparkfun/Sound_Detector
7*   
8* This sketch demonstrates the use of the Sparkfun Sound Detector board.
9*
10*   The Sound Detector is a small board that combines a microphone and some 
11* processing   circuitry.  It provides not only an audio output, but also a 
12* binary indication   of the presence of sound and an analog representation 
13* of it's amplitude.  
14*
15*   This sketch demonstrates two different modes of usage for the Sound
16* Detector.   The gate output (a binary indication that is high when sound
17* is present,   and low when conditions are quiet) is used to fire a pin-change 
18* ISR, which   lights an LED when the sound is present.  The envelope output 
19* (an analog voltage   to rises to indicate the amplitude of the sound) is 
20* sampled in the loop(),   and it prints an indication of the level to the 
21* serial terminal. 
22*
23*   For more details about the Sound Detector, please check the hookup guide.
24*
25*   Connections:
26* The Sound Detector is connected to the Adrduino as follows:
27*   (Sound Detector -> Arduino pin)
28* GND → GND
29* VCC → 5V
30* Gate → Pin 2
31*   Envelope → A0
32* 
33* Resources:
34* Additional library requirements: none
35*   
36* Development environment specifics:
37* Using Arduino IDe 1.0.5
38* Tested   on Redboard, 3.3v/8MHz and 5v/16MHz ProMini hardware.
39* 
40* This code is beerware;   if you see me (or any other SparkFun employee) at the
41* local, and you've found   our code helpful, please buy us a round!
42* 
43* Distributed as-is; no warranty   is given.
44******************************************************************************/
45//   Define hardware connections
46#define PIN_GATE_IN 2
47#define IRQ_GATE_IN  0
48#define   PIN_LED_OUT 13
49#define PIN_ANALOG_IN A0
50// soundISR()
51// This function   is installed as an interrupt service routine for the pin
52// change interrupt.   When digital input 2 changes state, this routine
53// is called.
54// It queries   the state of that pin, and sets the onboard LED to reflect that 
55// pin's state.
56void   soundISR()
57{
58 int pin_val;
59 pin_val = digitalRead(PIN_GATE_IN);
60 digitalWrite(PIN_LED_OUT,   pin_val);   
61}
62void setup()
63{
64 Serial.begin(9600);
65 //  Configure   LED pin as output
66 pinMode(PIN_LED_OUT, OUTPUT);
67 // configure input to interrupt
68   pinMode(PIN_GATE_IN, INPUT);
69 attachInterrupt(IRQ_GATE_IN, soundISR, CHANGE);
70   // Display status
71 Serial.println("Initialized");
72}
73void loop()
74{
75   int value;
76 // Check the envelope input
77 value = analogRead(PIN_ANALOG_IN);
78   // Convert envelope value into a message
79 Serial.print("Status: ");
80 if(value   <= 10)
81 {
82   Serial.println("Quiet.");
83 }
84 else if( (value > 10) &&   ( value <= 30) )
85 {
86   Serial.println("Moderate.");
87 }
88 else if(value   > 30)
89 {
90   Serial.println("Loud.");
91 }
92 // pause for 1 second
93   delay(1000);
94}

1/******************************************************************************
2*  sound_detector_demo.ino
3* Sound detector sample sketch
4* Byron Jacquot @ SparkFun  Electronics
5* February 19, 2014
6* https://github.com/sparkfun/Sound_Detector
7*  
8* This sketch demonstrates the use of the Sparkfun Sound Detector board.
9*
10*  The Sound Detector is a small board that combines a microphone and some 
11* processing  circuitry.  It provides not only an audio output, but also a 
12* binary indication  of the presence of sound and an analog representation 
13* of it's amplitude.  
14*
15*  This sketch demonstrates two different modes of usage for the Sound
16* Detector.  The gate output (a binary indication that is high when sound
17* is present,  and low when conditions are quiet) is used to fire a pin-change 
18* ISR, which  lights an LED when the sound is present.  The envelope output 
19* (an analog voltage  to rises to indicate the amplitude of the sound) is 
20* sampled in the loop(),  and it prints an indication of the level to the 
21* serial terminal. 
22*
23*  For more details about the Sound Detector, please check the hookup guide.
24*
25*  Connections:
26* The Sound Detector is connected to the Adrduino as follows:
27*  (Sound Detector -> Arduino pin)
28* GND → GND
29* VCC → 5V
30* Gate → Pin 2
31*  Envelope → A0
32* 
33* Resources:
34* Additional library requirements: none
35*  
36* Development environment specifics:
37* Using Arduino IDe 1.0.5
38* Tested  on Redboard, 3.3v/8MHz and 5v/16MHz ProMini hardware.
39* 
40* This code is beerware;  if you see me (or any other SparkFun employee) at the
41* local, and you've found  our code helpful, please buy us a round!
42* 
43* Distributed as-is; no warranty  is given.
44******************************************************************************/
45//  Define hardware connections
46#define PIN_GATE_IN 2
47#define IRQ_GATE_IN  0
48#define  PIN_LED_OUT 13
49#define PIN_ANALOG_IN A0
50// soundISR()
51// This function  is installed as an interrupt service routine for the pin
52// change interrupt.  When digital input 2 changes state, this routine
53// is called.
54// It queries  the state of that pin, and sets the onboard LED to reflect that 
55// pin's state.
56void  soundISR()
57{
58 int pin_val;
59 pin_val = digitalRead(PIN_GATE_IN);
60 digitalWrite(PIN_LED_OUT,  pin_val);   
61}
62void setup()
63{
64 Serial.begin(9600);
65 //  Configure  LED pin as output
66 pinMode(PIN_LED_OUT, OUTPUT);
67 // configure input to interrupt
68  pinMode(PIN_GATE_IN, INPUT);
69 attachInterrupt(IRQ_GATE_IN, soundISR, CHANGE);
70  // Display status
71 Serial.println("Initialized");
72}
73void loop()
74{
75  int value;
76 // Check the envelope input
77 value = analogRead(PIN_ANALOG_IN);
78  // Convert envelope value into a message
79 Serial.print("Status: ");
80 if(value  <= 10)
81 {
82   Serial.println("Quiet.");
83 }
84 else if( (value > 10) &&  ( value <= 30) )
85 {
86   Serial.println("Moderate.");
87 }
88 else if(value  > 30)
89 {
90   Serial.println("Loud.");
91 }
92 // pause for 1 second
93  delay(1000);
94}

1int trigPin = 11;
2int echoPin = 12;
3
4long duration;
5int distance;
6
7void
8  setup() {
9
10pinMode(trigPin, OUTPUT); 
11pinMode(echoPin, INPUT);
12Serial.begin(9600);
13  
14
15}
16void loop() {
17
18digitalWrite(trigPin, LOW);
19delayMicroseconds(2);
20
21digitalWrite(trigPin,
22  HIGH);
23delayMicroseconds(10);
24digitalWrite(trigPin, LOW);
25
26duration
27  = pulseIn(echoPin, HIGH);
28distance= duration*0.034/2;
29
30Serial.print("Distance:
31  ");
32Serial.println(distance);
33}