Ultrasonic Sensor with Alarm, LCD and Temperature

1#include <LiquidCrystal.h>//Load Liquid Crystal Library
2#include <OneWire.h>
3#include  <DallasTemperature.h>
4#define ONE_WIRE_BUS 6 // Data wire is plugged into pin  6 on the Arduino 
5
6OneWire oneWire(ONE_WIRE_BUS); // Setup a oneWire instance  to communicate with any OneWire devices
7// (not just Maxim/Dallas temperature  ICs)
8DallasTemperature sensors(&oneWire);   // Pass our oneWire reference to  Dallas Temperature.
9
10LiquidCrystal LCD(12, 11, 5, 4, 3, 2);  //Create Liquid  Crystal Object called LCD
11
12int trigPin = 9; //Sensor Trip pin connected to  Arduino pin 9
13int echoPin = 7; //Sensor Echo pin connected to Arduino pin 7
14int  myCounter = 0; //declare your variable myCounter and set to 0
15
16float pingTime;  //time for ping to travel from the sensor to the target and return
17float targetDistance;  //Distance to Target in Centimeters
18float speedOfSound = 776.5; //Speed of sound  in miles per hour
19
20
21
22void setup() {
23
24  Serial.begin(9600);
25  pinMode(trigPin, OUTPUT);
26  pinMode(echoPin, INPUT);
27  LCD.begin(16, 2);  //Tell Arduino to start your 16x2 LCD
28  LCD.setCursor(0, 0); //Set LCD cursor  to upper left corner, column 0, row 0
29  LCD.print("Distance:");  //Print Message  on First Row
30
31  sensors.begin();   // Start up the library
32
33  pinMode(8,  OUTPUT);  //pin  8, 10, 13 output pins
34  pinMode(10, OUTPUT);
35  pinMode(13,  OUTPUT);
36}
37void loop() {
38
39
40  digitalWrite(trigPin, LOW); //Set trigger  pin low
41  delayMicroseconds(2000); //Let signal settle
42  digitalWrite(trigPin,  HIGH); //Set trigPin high
43  delayMicroseconds(15); //Delay in high state
44  digitalWrite(trigPin, LOW); //ping has now been sent
45  delayMicroseconds(10);  //Delay in high state
46
47  pingTime = pulseIn(echoPin, HIGH);  //pingTime in  microceconds
48  pingTime = pingTime / 1000000; //convert pingTime to seconds by  dividing by 1000000 (microseconds in a second)
49  pingTime = pingTime / 3600;  //convert pingtime to hours by dividing by 3600 (seconds in an hour)
50  targetDistance  = speedOfSound * pingTime; //This will be in miles, since we declared the speed  of sound as kilometers per hour; although we're going to convert it back to centimeters
51  targetDistance = targetDistance / 2; //Remember ping travels to the target and  back from the target, so you must divide by 2 for actual target distance.
52  targetDistance  = targetDistance * 160934.4; //Convert miles to centimeters by multipling by 160934,4
53  sensors.requestTemperatures(); // Send the command to get temperature readings
54
55
56  LCD.setCursor(10, 0); //Set the cursor to the tenth column of the first row
57  LCD.print("                "); //Print blanks to clear the row
58  LCD.setCursor(10,  0);  //Set Cursor again to the tenth column of the first row
59  LCD.print((int)  (targetDistance + 0.5)); //Print measured distance
60  LCD.print("cm ");  //Print  your units
61  LCD.setCursor(0, 1); //Set the cursor to the first column of the  second row
62  LCD.print("                "); //Print blanks to clear the row
63  LCD.setCursor(0, 1);  //Set Cursor again to the first column of the second row
64
65
66  if (targetDistance > 40) {
67    LCD.print("LEV LOW  ");
68    LCD.print(sensors.getTempCByIndex(0));
69    LCD.print((char)223);
70    LCD.print ("C");
71  }
72  else if (targetDistance  < 40 && targetDistance > 20) {
73    LCD.print("LEV MED  ");
74    LCD.print(sensors.getTempCByIndex(0));
75    LCD.print((char)223);
76    LCD.print ("C");
77    
78  }
79  else (targetDistance  < 20); {
80    LCD.print ("LEV HIGH ");
81    LCD.print(sensors.getTempCByIndex(0));
82    LCD.print((char)223);
83    LCD.print ("C");
84  }
85
86  delay(2000);
87
88
89  if (targetDistance > 40) {
90    digitalWrite (13, HIGH);  //Green LED ON
91  }
92  else {
93    digitalWrite(13, LOW);   //Green LED OFF
94  }
95
96  if  (targetDistance < 40 && targetDistance > 20) {
97    digitalWrite (8, HIGH);   //Yellow  LED ON
98  }
99  else {
100    digitalWrite(8, LOW);    //Yellow LED OFF
101  }
102
103  if (targetDistance < 20) {
104    digitalWrite(10, HIGH);   //Red LED ON
105    delay(2000);
106    digitalWrite(10, LOW);   //Red LED OFF
107  }
108
109  else {
110    digitalWrite(10,  LOW);   //Red LED OFF
111  }
112
113
114 }
115
116
117