Cat Detector!

1#include <Arduino.h> 
2#include <U8g2lib.h> 
3#ifdef U8X8_HAVE_HW_SPI  
4#include <SPI.h> 
5#endif 
6#ifdef U8X8_HAVE_HW_I2C 
7#include <Wire.h>  
8#endif 
9U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL,  /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   // All Boards without Reset of the  Display 
10
11// Define pins for ultrasonic sensor
12int const trigPin = 10;
13int  const echoPin = 9; 
14
15void setup(void) { 
16  u8g2.begin();             //  Oled display begins 
17  pinMode(trigPin, OUTPUT); // trig pin will have pulses  output
18  pinMode(echoPin, INPUT);  // echo pin should be input to get pulse width
19}  
20
21void loop(void) { 
22  int duration, distance; // Duration will be the  input pulse width and distance will be the distance to the obstacle in centimeters
23  
24  // Output pulse with 1ms width on trigPin
25  digitalWrite(trigPin, HIGH);  
26  delay(1);
27  digitalWrite(trigPin, LOW);
28  
29  duration = pulseIn(echoPin,  HIGH); // Measure the pulse input in echo pin
30  
31  distance = (duration/2)  / 29.1;    // Distance is half the duration devided by 29.1 (from datasheet)
32     
33  // if distance less than 0.5 meter and more than 0 (0 or less means over  range) 
34    if (distance <= 50 && distance >= 0) {
35         u8g2.clearBuffer();                // clear the internal memory 
36         u8g2.setFont(u8g2_font_inr30_mf);  // choose a suitable font 
37         u8g2.drawStr(0,50,"CAT");          //  write something to the internal memory 
38         u8g2.sendBuffer();                 //  transfer internal memory to the display 
39    } else {
40         u8g2.clearBuffer();                // clear the internal memory 
41         u8g2.sendBuffer();                 //  transfer internal memory to the display 
42    } 
43
44    delay(30);
45}

1#include <Arduino.h> 
2#include <U8g2lib.h> 
3#ifdef U8X8_HAVE_HW_SPI
4  
5#include <SPI.h> 
6#endif 
7#ifdef U8X8_HAVE_HW_I2C 
8#include <Wire.h>
9  
10#endif 
11U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL,
12  /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   // All Boards without Reset of the
13  Display 
14
15// Define pins for ultrasonic sensor
16int const trigPin = 10;
17int
18  const echoPin = 9; 
19
20void setup(void) { 
21  u8g2.begin();             //
22  Oled display begins 
23  pinMode(trigPin, OUTPUT); // trig pin will have pulses
24  output
25  pinMode(echoPin, INPUT);  // echo pin should be input to get pulse width
26}
27  
28
29void loop(void) { 
30  int duration, distance; // Duration will be the
31  input pulse width and distance will be the distance to the obstacle in centimeters
32
33  
34  // Output pulse with 1ms width on trigPin
35  digitalWrite(trigPin, HIGH);
36  
37  delay(1);
38  digitalWrite(trigPin, LOW);
39  
40  duration = pulseIn(echoPin,
41  HIGH); // Measure the pulse input in echo pin
42  
43  distance = (duration/2)
44  / 29.1;    // Distance is half the duration devided by 29.1 (from datasheet)
45
46     
47  // if distance less than 0.5 meter and more than 0 (0 or less means over
48  range) 
49    if (distance <= 50 && distance >= 0) {
50         u8g2.clearBuffer();
51                // clear the internal memory 
52         u8g2.setFont(u8g2_font_inr30_mf);
53  // choose a suitable font 
54         u8g2.drawStr(0,50,"CAT");          //
55  write something to the internal memory 
56         u8g2.sendBuffer();                 //
57  transfer internal memory to the display 
58    } else {
59         u8g2.clearBuffer();
60                // clear the internal memory 
61         u8g2.sendBuffer();                 //
62  transfer internal memory to the display 
63    } 
64
65    delay(30);
66}