Distance Detection Circuit with HC-SSR04 and Micro OLED

This is a prototype that measures distances in meters and inches, and prints the distances on a screen.

Jun 20, 2019

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measure

prototype

distance

Components and supplies

Solderless Breadboard Half Size

Arduino UNO

SparkFun Micro OLED Breakout

Jumper wires (generic)

Ultrasonic Sensor - HC-SR04 (Generic)

Apps and platforms

Arduino IDE

sparkfun micro oled library

Project description

Code

c_cpp

1#include <Wire.h>
2
3#include <SPI.h>
4
5#include <SFE_MicroOLED.h>
6#define   PIN_RESET 9  // Connect RST to pin 9
7#define PIN_DC    8  // Connect DC to pin   8
8#define PIN_CS    10 // Connect CS to pin 10
9#define DC_JUMPER 0
10MicroOLED   oled(PIN_RESET, PIN_DC, PIN_CS); // SPI declaration
11//MicroOLED oled(PIN_RESET,   DC_JUMPER);    // I2C declaration
12
13int SCREEN_WIDTH = oled.getLCDWidth();
14int   SCREEN_HEIGHT = oled.getLCDHeight();
15
16
17#define trigPin 3
18#define echoPin   2
19
20
21void setup() 
22{
23 // Serial.begin(9600);
24  pinMode(trigPin,   OUTPUT);
25  pinMode(echoPin, INPUT);
26  oled.begin();
27 oled.clear(PAGE);
28   oled.display(); 
29 oled.clear(PAGE);
30  oled.clear(ALL);
31//arduino  logo   
32  oled.pixel(12,11);
33  oled.pixel(13,11);
34  oled.pixel(14,11);
35  oled.pixel(15,11);
36   oled.pixel(19,11);
37  oled.pixel(20,11);
38  oled.pixel(21,11);
39  oled.pixel(22,11);
40   oled.pixel(11,12);
41  oled.pixel(16,12);
42  oled.pixel(18,12);
43  oled.pixel(20,12);
44   oled.pixel(23,12);
45  oled.pixel(11,13);
46  oled.pixel(12,13);
47  oled.pixel(13,13);
48   oled.pixel(14,13);
49  oled.pixel(16,13);
50  oled.pixel(17,13);
51  oled.pixel(18,13);
52   oled.pixel(19,13);
53  oled.pixel(20,13);
54  oled.pixel(21,13);
55  oled.pixel(23,13);
56   oled.pixel(11,14);
57  oled.pixel(16,14);
58  oled.pixel(18,14);
59  oled.pixel(20,14);
60   oled.pixel(23,14);
61  oled.pixel(12,15);
62  oled.pixel(13,15);
63  oled.pixel(14,15);
64   oled.pixel(15,15);
65  oled.pixel(19,15);
66  oled.pixel(20,15);
67  oled.pixel(21,15);
68   oled.pixel(22,15);
69  oled.circle(17, 13, 8); 
70  oled.setFontType(0);  //   Set the text to small (10 columns, 6 rows worth of characters).
71oled.setCursor(11,   30);
72oled.print("ARDUINO");
73  oled.display();
74  oled.clear(PAGE);
75   //arduino logo
76  delay(2000);
77}
78void loop() 
79{
80  oled.clear(PAGE);
81   oled.clear(ALL);
82
83  
84  long duration, distance;
85  digitalWrite(trigPin,   LOW);        
86  delayMicroseconds(2);              
87  digitalWrite(trigPin,   HIGH);
88  delayMicroseconds(10);           
89  digitalWrite(trigPin, LOW);
90   duration = pulseIn(echoPin, HIGH);
91  distance = (duration/2) / 29.1;
92  
93//Serial.print(distance/100.0);
94//   Serial.println(" m");
95
96//Serial.print(distance/2.54);
97//Serial.println("   in.");
98
99
100  oled.setFontType(0);  // Set the text to small (10 columns,   6 rows worth of characters).
101oled.setCursor(0, 0);  // Set the text cursor to   the upper-left of the screen.
102oled.print(distance/100.0); // print distance in   meters
103oled.print(" m    ");
104oled.print(distance/2.54); // Print distance   in inches
105oled.print(" in.");
106oled.display();
107
108  delay(100);
109}
110

#include <Wire.h>

#include <SPI.h>

#include <SFE_MicroOLED.h>
#define   PIN_RESET 9  // Connect RST to pin 9
#define PIN_DC    8  // Connect DC to pin   8
#define PIN_CS    10 // Connect CS to pin 10
#define DC_JUMPER 0
MicroOLED   oled(PIN_RESET, PIN_DC, PIN_CS); // SPI declaration
//MicroOLED oled(PIN_RESET,   DC_JUMPER);    // I2C declaration

int SCREEN_WIDTH = oled.getLCDWidth();
int   SCREEN_HEIGHT = oled.getLCDHeight();


#define trigPin 3
#define echoPin   2


void setup() 
{
 // Serial.begin(9600);
  pinMode(trigPin,   OUTPUT);
  pinMode(echoPin, INPUT);
  oled.begin();
 oled.clear(PAGE);
   oled.display(); 
 oled.clear(PAGE);
  oled.clear(ALL);
//arduino  logo   
  oled.pixel(12,11);
  oled.pixel(13,11);
  oled.pixel(14,11);
  oled.pixel(15,11);
   oled.pixel(19,11);
  oled.pixel(20,11);
  oled.pixel(21,11);
  oled.pixel(22,11);
   oled.pixel(11,12);
  oled.pixel(16,12);
  oled.pixel(18,12);
  oled.pixel(20,12);
   oled.pixel(23,12);
  oled.pixel(11,13);
  oled.pixel(12,13);
  oled.pixel(13,13);
   oled.pixel(14,13);
  oled.pixel(16,13);
  oled.pixel(17,13);
  oled.pixel(18,13);
   oled.pixel(19,13);
  oled.pixel(20,13);
  oled.pixel(21,13);
  oled.pixel(23,13);
   oled.pixel(11,14);
  oled.pixel(16,14);
  oled.pixel(18,14);
  oled.pixel(20,14);
   oled.pixel(23,14);
  oled.pixel(12,15);
  oled.pixel(13,15);
  oled.pixel(14,15);
   oled.pixel(15,15);
  oled.pixel(19,15);
  oled.pixel(20,15);
  oled.pixel(21,15);
   oled.pixel(22,15);
  oled.circle(17, 13, 8); 
  oled.setFontType(0);  //   Set the text to small (10 columns, 6 rows worth of characters).
oled.setCursor(11,   30);
oled.print("ARDUINO");
  oled.display();
  oled.clear(PAGE);
   //arduino logo
  delay(2000);
}
void loop() 
{
  oled.clear(PAGE);
   oled.clear(ALL);

  
  long duration, distance;
  digitalWrite(trigPin,   LOW);        
  delayMicroseconds(2);              
  digitalWrite(trigPin,   HIGH);
  delayMicroseconds(10);           
  digitalWrite(trigPin, LOW);
   duration = pulseIn(echoPin, HIGH);
  distance = (duration/2) / 29.1;
  
//Serial.print(distance/100.0);
//   Serial.println(" m");

//Serial.print(distance/2.54);
//Serial.println("   in.");


  oled.setFontType(0);  // Set the text to small (10 columns,   6 rows worth of characters).
oled.setCursor(0, 0);  // Set the text cursor to   the upper-left of the screen.
oled.print(distance/100.0); // print distance in   meters
oled.print(" m    ");
oled.print(distance/2.54); // Print distance   in inches
oled.print(" in.");
oled.display();

  delay(100);
}

Code

c_cpp

1#include <Wire.h>
2
3#include <SPI.h>
4
5#include <SFE_MicroOLED.h>
6#define  PIN_RESET 9  // Connect RST to pin 9
7#define PIN_DC    8  // Connect DC to pin  8
8#define PIN_CS    10 // Connect CS to pin 10
9#define DC_JUMPER 0
10MicroOLED  oled(PIN_RESET, PIN_DC, PIN_CS); // SPI declaration
11//MicroOLED oled(PIN_RESET,  DC_JUMPER);    // I2C declaration
12
13int SCREEN_WIDTH = oled.getLCDWidth();
14int  SCREEN_HEIGHT = oled.getLCDHeight();
15
16
17#define trigPin 3
18#define echoPin  2
19
20
21void setup() 
22{
23 // Serial.begin(9600);
24  pinMode(trigPin,  OUTPUT);
25  pinMode(echoPin, INPUT);
26  oled.begin();
27 oled.clear(PAGE);
28  oled.display(); 
29 oled.clear(PAGE);
30  oled.clear(ALL);
31//arduino  logo  
32  oled.pixel(12,11);
33  oled.pixel(13,11);
34  oled.pixel(14,11);
35  oled.pixel(15,11);
36  oled.pixel(19,11);
37  oled.pixel(20,11);
38  oled.pixel(21,11);
39  oled.pixel(22,11);
40  oled.pixel(11,12);
41  oled.pixel(16,12);
42  oled.pixel(18,12);
43  oled.pixel(20,12);
44  oled.pixel(23,12);
45  oled.pixel(11,13);
46  oled.pixel(12,13);
47  oled.pixel(13,13);
48  oled.pixel(14,13);
49  oled.pixel(16,13);
50  oled.pixel(17,13);
51  oled.pixel(18,13);
52  oled.pixel(19,13);
53  oled.pixel(20,13);
54  oled.pixel(21,13);
55  oled.pixel(23,13);
56  oled.pixel(11,14);
57  oled.pixel(16,14);
58  oled.pixel(18,14);
59  oled.pixel(20,14);
60  oled.pixel(23,14);
61  oled.pixel(12,15);
62  oled.pixel(13,15);
63  oled.pixel(14,15);
64  oled.pixel(15,15);
65  oled.pixel(19,15);
66  oled.pixel(20,15);
67  oled.pixel(21,15);
68  oled.pixel(22,15);
69  oled.circle(17, 13, 8); 
70  oled.setFontType(0);  //  Set the text to small (10 columns, 6 rows worth of characters).
71oled.setCursor(11,  30);
72oled.print("ARDUINO");
73  oled.display();
74  oled.clear(PAGE);
75  //arduino logo
76  delay(2000);
77}
78void loop() 
79{
80  oled.clear(PAGE);
81  oled.clear(ALL);
82
83  
84  long duration, distance;
85  digitalWrite(trigPin,  LOW);        
86  delayMicroseconds(2);              
87  digitalWrite(trigPin,  HIGH);
88  delayMicroseconds(10);           
89  digitalWrite(trigPin, LOW);
90  duration = pulseIn(echoPin, HIGH);
91  distance = (duration/2) / 29.1;
92  
93//Serial.print(distance/100.0);
94//  Serial.println(" m");
95
96//Serial.print(distance/2.54);
97//Serial.println("  in.");
98
99
100  oled.setFontType(0);  // Set the text to small (10 columns,  6 rows worth of characters).
101oled.setCursor(0, 0);  // Set the text cursor to  the upper-left of the screen.
102oled.print(distance/100.0); // print distance in  meters
103oled.print(" m    ");
104oled.print(distance/2.54); // Print distance  in inches
105oled.print(" in.");
106oled.display();
107
108  delay(100);
109}
110

#include <Wire.h>

#include <SPI.h>

#include <SFE_MicroOLED.h>
#define  PIN_RESET 9  // Connect RST to pin 9
#define PIN_DC    8  // Connect DC to pin  8
#define PIN_CS    10 // Connect CS to pin 10
#define DC_JUMPER 0
MicroOLED  oled(PIN_RESET, PIN_DC, PIN_CS); // SPI declaration
//MicroOLED oled(PIN_RESET,  DC_JUMPER);    // I2C declaration

int SCREEN_WIDTH = oled.getLCDWidth();
int  SCREEN_HEIGHT = oled.getLCDHeight();


#define trigPin 3
#define echoPin  2


void setup() 
{
 // Serial.begin(9600);
  pinMode(trigPin,  OUTPUT);
  pinMode(echoPin, INPUT);
  oled.begin();
 oled.clear(PAGE);
  oled.display(); 
 oled.clear(PAGE);
  oled.clear(ALL);
//arduino  logo  
  oled.pixel(12,11);
  oled.pixel(13,11);
  oled.pixel(14,11);
  oled.pixel(15,11);
  oled.pixel(19,11);
  oled.pixel(20,11);
  oled.pixel(21,11);
  oled.pixel(22,11);
  oled.pixel(11,12);
  oled.pixel(16,12);
  oled.pixel(18,12);
  oled.pixel(20,12);
  oled.pixel(23,12);
  oled.pixel(11,13);
  oled.pixel(12,13);
  oled.pixel(13,13);
  oled.pixel(14,13);
  oled.pixel(16,13);
  oled.pixel(17,13);
  oled.pixel(18,13);
  oled.pixel(19,13);
  oled.pixel(20,13);
  oled.pixel(21,13);
  oled.pixel(23,13);
  oled.pixel(11,14);
  oled.pixel(16,14);
  oled.pixel(18,14);
  oled.pixel(20,14);
  oled.pixel(23,14);
  oled.pixel(12,15);
  oled.pixel(13,15);
  oled.pixel(14,15);
  oled.pixel(15,15);
  oled.pixel(19,15);
  oled.pixel(20,15);
  oled.pixel(21,15);
  oled.pixel(22,15);
  oled.circle(17, 13, 8); 
  oled.setFontType(0);  //  Set the text to small (10 columns, 6 rows worth of characters).
oled.setCursor(11,  30);
oled.print("ARDUINO");
  oled.display();
  oled.clear(PAGE);
  //arduino logo
  delay(2000);
}
void loop() 
{
  oled.clear(PAGE);
  oled.clear(ALL);

  
  long duration, distance;
  digitalWrite(trigPin,  LOW);        
  delayMicroseconds(2);              
  digitalWrite(trigPin,  HIGH);
  delayMicroseconds(10);           
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = (duration/2) / 29.1;
  
//Serial.print(distance/100.0);
//  Serial.println(" m");

//Serial.print(distance/2.54);
//Serial.println("  in.");


  oled.setFontType(0);  // Set the text to small (10 columns,  6 rows worth of characters).
oled.setCursor(0, 0);  // Set the text cursor to  the upper-left of the screen.
oled.print(distance/100.0); // print distance in  meters
oled.print(" m    ");
oled.print(distance/2.54); // Print distance  in inches
oled.print(" in.");
oled.display();

  delay(100);
}

Downloadable files

screen hookup

HC-SR04 hookup

screen hookup

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