Sound Direction Tester

1/*
2 File/Sketch Name: SoundDirectionFinder
3
4 Version No.: v1.0  Created 14 August, 2019
5 
6 Original Author: Clyde A. Lettsome, PhD, PE, MEM
7  
8 Description:  This code/sketch makes finding the general direction of sound  easy. This code/sketch drives to LEDs to indicate which of two microphones is receiving  an audible sound.
9 If both microphone sensors detect sound both (left and right)  LEDs light indicating that both microphones have detected sound. If one microphone  sensor (left or right) detects sound,
10 then the corresponding LED (left or right)  will light up. If both microphone sensors detect sound then both LEDs will light  up.
11
12
13 License: This program is free software; you can redistribute it  and/or modify it under the terms of the GNU General Public License (GPL) version  3, or any later
14 version of your choice, as published by the Free Software Foundation.
15
16  Notes: Copyright (c) 2019 by C. A. Lettsome Services, LLC
17 For more information  visit https://clydelettsome.com/blog/2019/08/15/my-weekend-project-sound-direction-tester/
18
19  */
20
21int leftLedPin=13;
22int rightLedPin=12;
23int rightSensorPin=7;
24int  leftSensorPin=8;
25boolean rightVal = 0;
26boolean leftVal = 0;
27
28void setup()
29{
30  pinMode(leftLedPin, OUTPUT);
31  pinMode(rightLedPin, OUTPUT);
32  pinMode(leftSensorPin,  INPUT);
33  pinMode(rightSensorPin, INPUT);
34  Serial.begin (9600);
35}
36  
37void loop ()
38{
39  rightVal =digitalRead(rightSensorPin);
40  leftVal  =digitalRead(leftSensorPin);
41  
42  // when the sensor detects a signal above  the threshold value, LED flashes
43  if (leftVal==LOW && rightVal==LOW) 
44  {
45    digitalWrite(leftLedPin, LOW);
46    digitalWrite(rightLedPin, LOW);
47    Serial.println("None");
48  }
49  else if (leftVal==LOW && rightVal==HIGH)
50  {
51    digitalWrite(leftLedPin,  LOW);
52    digitalWrite(rightLedPin, HIGH);
53    Serial.println("Right");
54  }
55  else if (leftVal==HIGH && rightVal==LOW)
56  {
57    digitalWrite(leftLedPin,  HIGH);
58    digitalWrite(rightLedPin, LOW);
59    Serial.println("Left");
60  }
61  else 
62  {
63    digitalWrite(leftLedPin, HIGH);
64    digitalWrite(rightLedPin,  HIGH);
65    Serial.println("Both");
66  }
67}
68
69