Social Distancing Reminder – Coronavirus

1#include <HCSR04.h>
2#include <LiquidCrystal.h>
3#define trigPin 7
4#define  echoPin 6
5#define buzzer 9
6#define backlight 10
7
8LiquidCrystal lcd(12,  11, 5, 4, 3, 8);
9UltraSonicDistanceSensor distanceSensor(trigPin, echoPin);
10
11int  tempReading;
12double tempK;
13float tempC;
14int rounded;
15int temp_round;
16volatile  boolean modes = 0;
17double distance;
18
19void setup() {
20  lcd.begin(16,  2);
21  attachInterrupt(0, changeMode, FALLING);
22  pinMode(2, INPUT);
23  pinMode(buzzer,  OUTPUT);
24  pinMode(backlight, OUTPUT);
25  digitalWrite(backlight, HIGH);
26  backlightOn();
27}
28
29void loop() {
30  tempReading = analogRead(A0);
31  tempK = log(10000.0 * ((1024.0 / tempReading - 1)));
32  tempK = 1 / (0.001129148  + (0.000234125 + (0.0000000876741 * tempK * tempK )) * tempK );
33  tempC = tempK  - 273.15;
34  distance = distanceSensor.measureDistanceCm(tempC);
35  temp_round  = round(tempC);
36  if (modes == 1) {
37    backlightOn();
38    if (distance  >= 300 || distance <= 0) {
39      rounded = 0;
40      lcd.clear();
41      lcd.print("Out  of range");
42      lcd.setCursor(0, 1);
43      lcd.print("Temperature:" +  String(temp_round) + " C");
44    }
45    else {
46      rounded = round(distance);
47      lcd.clear();
48      lcd.print("Distance: ");
49      lcd.print(rounded);
50      lcd.print(" cm");
51      lcd.setCursor(0, 1);
52      lcd.print("Temperature:"  + String(temp_round) + " C");
53    }
54  } else {
55    if (distance >= 300  || distance <= 0) {
56      rounded = 0;
57      lcd.clear();
58      backlightOff();
59    }
60    else {
61      rounded = round(distance);
62      if (distance >=  200) {
63        backlightOff();
64        lcd.clear();
65      }
66      else  if (distance <= 200 && distance > 100) {
67        backlightOn();
68        lcd.clear();
69        lcd.print("Please keep away");
70        lcd.setCursor(0, 1);
71        lcd.print("Distance:");
72        lcd.print(rounded);
73        lcd.print(" cm");
74      }
75      else  if (distance <= 100 && distance > 50) {
76        backlightOn();
77        lcd.clear();
78        lcd.print("Keep away");
79        lcd.setCursor(0, 1);
80        lcd.print("Distance:");
81        lcd.print(rounded);
82        lcd.print(" cm");
83        delay(200);
84        buzz();
85        backlightOff();
86        delay(100);
87        unbuzz();
88        backlightOn();
89        delay(100);
90      }
91      else if (distance  <= 50) {
92        backlightOn();
93        lcd.clear();
94        lcd.print("STAY  AWAY!");
95        lcd.setCursor(0, 1);
96        lcd.print("Distance:");
97        lcd.print(rounded);
98        lcd.print(" cm");
99        delay(200);
100        buzz();
101        backlightOff();
102        delay(200);
103        unbuzz();
104        backlightOn();
105        delay(200);
106        buzz();
107        backlightOff();
108        delay(200);
109        unbuzz();
110        backlightOn();
111      }
112    }
113  }
114  delay(700);
115}
116
117void changeMode() {
118  modes = !modes;
119}
120
121void  backlightOn() {
122  digitalWrite(backlight, HIGH);
123}
124
125void backlightOff()  {
126  digitalWrite(backlight, LOW);
127}
128
129void buzz() {
130  digitalWrite(buzzer,  HIGH);
131}
132
133void unbuzz() {
134  digitalWrite(buzzer, LOW);
135}
136

1#include <HCSR04.h>
2#include <LiquidCrystal.h>
3#define trigPin 7
4#define
5  echoPin 6
6#define buzzer 9
7#define backlight 10
8
9LiquidCrystal lcd(12,
10  11, 5, 4, 3, 8);
11UltraSonicDistanceSensor distanceSensor(trigPin, echoPin);
12
13int
14  tempReading;
15double tempK;
16float tempC;
17int rounded;
18int temp_round;
19volatile
20  boolean modes = 0;
21double distance;
22
23void setup() {
24  lcd.begin(16,
25  2);
26  attachInterrupt(0, changeMode, FALLING);
27  pinMode(2, INPUT);
28  pinMode(buzzer,
29  OUTPUT);
30  pinMode(backlight, OUTPUT);
31  digitalWrite(backlight, HIGH);
32
33  backlightOn();
34}
35
36void loop() {
37  tempReading = analogRead(A0);
38
39  tempK = log(10000.0 * ((1024.0 / tempReading - 1)));
40  tempK = 1 / (0.001129148
41  + (0.000234125 + (0.0000000876741 * tempK * tempK )) * tempK );
42  tempC = tempK
43  - 273.15;
44  distance = distanceSensor.measureDistanceCm(tempC);
45  temp_round
46  = round(tempC);
47  if (modes == 1) {
48    backlightOn();
49    if (distance
50  >= 300 || distance <= 0) {
51      rounded = 0;
52      lcd.clear();
53      lcd.print("Out
54  of range");
55      lcd.setCursor(0, 1);
56      lcd.print("Temperature:" +
57  String(temp_round) + " C");
58    }
59    else {
60      rounded = round(distance);
61
62      lcd.clear();
63      lcd.print("Distance: ");
64      lcd.print(rounded);
65
66      lcd.print(" cm");
67      lcd.setCursor(0, 1);
68      lcd.print("Temperature:"
69  + String(temp_round) + " C");
70    }
71  } else {
72    if (distance >= 300
73  || distance <= 0) {
74      rounded = 0;
75      lcd.clear();
76      backlightOff();
77
78    }
79    else {
80      rounded = round(distance);
81      if (distance >=
82  200) {
83        backlightOff();
84        lcd.clear();
85      }
86      else
87  if (distance <= 200 && distance > 100) {
88        backlightOn();
89        lcd.clear();
90
91        lcd.print("Please keep away");
92        lcd.setCursor(0, 1);
93        lcd.print("Distance:");
94
95        lcd.print(rounded);
96        lcd.print(" cm");
97      }
98      else
99  if (distance <= 100 && distance > 50) {
100        backlightOn();
101        lcd.clear();
102
103        lcd.print("Keep away");
104        lcd.setCursor(0, 1);
105        lcd.print("Distance:");
106
107        lcd.print(rounded);
108        lcd.print(" cm");
109        delay(200);
110
111        buzz();
112        backlightOff();
113        delay(100);
114        unbuzz();
115
116        backlightOn();
117        delay(100);
118      }
119      else if (distance
120  <= 50) {
121        backlightOn();
122        lcd.clear();
123        lcd.print("STAY
124  AWAY!");
125        lcd.setCursor(0, 1);
126        lcd.print("Distance:");
127
128        lcd.print(rounded);
129        lcd.print(" cm");
130        delay(200);
131
132        buzz();
133        backlightOff();
134        delay(200);
135        unbuzz();
136
137        backlightOn();
138        delay(200);
139        buzz();
140        backlightOff();
141
142        delay(200);
143        unbuzz();
144        backlightOn();
145      }
146
147    }
148  }
149  delay(700);
150}
151
152void changeMode() {
153  modes = !modes;
154}
155
156void
157  backlightOn() {
158  digitalWrite(backlight, HIGH);
159}
160
161void backlightOff()
162  {
163  digitalWrite(backlight, LOW);
164}
165
166void buzz() {
167  digitalWrite(buzzer,
168  HIGH);
169}
170
171void unbuzz() {
172  digitalWrite(buzzer, LOW);
173}
174