To make the ultrasonic sensor work, you have to read this program and create the circuit that matches with it!

Here is the program:

/*

* created by Rui Santos, http://randomnerdtutorials.com

*

* Complete Guide for Ultrasonic Sensor HC-SR04

*

Ultrasonic sensor Pins:

VCC: +5VDC

Trig : Trigger (INPUT) - Pin11

Echo: Echo (OUTPUT) - Pin 12

GND: GND

*/

int trigPin = 11; //Trig - green Jumper

int echoPin = 12; //Echo - yellow Jumper

long duration, cm, inches;

void setup() {

//Serial Port begin

Serial.begin (9600);

//Define inputs and outputs

pinMode(trigPin, OUTPUT);

pinMode(echoPin, INPUT);

}

void loop()

{

// The sensor is triggered by a HIGH pulse of 10 or more microseconds.

// Give a short LOW pulse beforehand to ensure a clean HIGH pulse:

digitalWrite(trigPin, LOW);

delayMicroseconds(5);

digitalWrite(trigPin, HIGH);

delayMicroseconds(10);

digitalWrite(trigPin, LOW);

// Read the signal from the sensor: a HIGH pulse whose

// duration is the time (in microseconds) from the sending

// of the ping to the reception of its echo off of an object.

pinMode(echoPin, INPUT);

duration = pulseIn(echoPin, HIGH);

// convert the time into a distance

cm = 17 - ((duration/2) / 29.1);

inches = 20 -((duration/2) / 74);

Serial.print(inches);

Serial.print("in, ");

Serial.print(cm);

Serial.print("cm");

Serial.println();

delay(250);

}

To make the screens work, you have to make the diagram below twice!!

And this is the program that matches with them:

// on assigne chaque led a une borne de l'arduino //

const int A = 2;

const int B = 3;

const int C = 4;

const int D = 5;

const int E = 6;

const int F = 7;

const int G = 8;

const int H = 9;

const int I = 10;

const int J = 11;

const int K = 12;

const int L = 13;

const int M = 1;

const int N = A5;

int tempo = 1000;

void setup()

{ // definitio des broche en sortie//

pinMode(A, OUTPUT);

pinMode(B, OUTPUT);

pinMode(C, OUTPUT);

pinMode(D, OUTPUT);

pinMode(E, OUTPUT);

pinMode(F, OUTPUT);

pinMode(G, OUTPUT);

pinMode(H, OUTPUT);

pinMode(I, OUTPUT);

pinMode(J, OUTPUT);

pinMode(K, OUTPUT);

pinMode(L, OUTPUT);

pinMode(M, OUTPUT);

pinMode(N, OUTPUT);

// Mise a l'etat Haut de ces sortie pour eteindre le Led de l'aficheur//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,HIGH);

}

//A1-G1 chiffre des décimals et A-G chiffre des unités//

void loop()

{

// chifre 0//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,HIGH);

digitalWrite (M,LOW);

digitalWrite (N,LOW);

delay (tempo);

//chifre 1//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,LOW);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,LOW);

digitalWrite (K,LOW);

digitalWrite (L,LOW);

digitalWrite (M,LOW);

digitalWrite (N,LOW);

delay (tempo);

//chifre 2//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,LOW);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,LOW);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 3//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,LOW);

digitalWrite (L,LOW);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 4//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,LOW);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,LOW);

digitalWrite (K,LOW);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

// chifre 5//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,HIGH);

digitalWrite (H,LOW);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,LOW);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 6//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,HIGH);

digitalWrite (H,LOW);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 7//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,LOW);

digitalWrite (K,LOW);

digitalWrite (L,LOW);

digitalWrite (M,LOW);

digitalWrite (N,LOW);

delay (tempo);

//chifre 8//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 9//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,HIGH);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,LOW);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

// chifre 10//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,HIGH);

digitalWrite (M,LOW);

digitalWrite (N,LOW);

delay (tempo);

//chifre 11//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,LOW);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,LOW);

digitalWrite (K,LOW);

digitalWrite (L,LOW);

digitalWrite (M,LOW);

digitalWrite (N,LOW);

delay (tempo);

//chifre 12//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,LOW);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,LOW);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 13//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,LOW);

digitalWrite (L,LOW);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 14//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,LOW);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,LOW);

digitalWrite (K,LOW);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

// chifre 15//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,HIGH);

digitalWrite (H,LOW);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,LOW);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 16//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,HIGH);

digitalWrite (H,LOW);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 17//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,LOW);

digitalWrite (K,LOW);

digitalWrite (L,LOW);

digitalWrite (M,LOW);

digitalWrite (N,LOW);

delay (tempo);

//chifre 18//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chifre 19//

digitalWrite (A,LOW);

digitalWrite (B,HIGH);

digitalWrite (C,HIGH);

digitalWrite (D,LOW);

digitalWrite (E,LOW);

digitalWrite (F,LOW);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,LOW);

digitalWrite (L,HIGH);

digitalWrite (M,HIGH);

digitalWrite (N,LOW);

delay (tempo);

//chiffre 20//

digitalWrite (A,HIGH);

digitalWrite (B,HIGH);

digitalWrite (C,LOW);

digitalWrite (D,HIGH);

digitalWrite (E,HIGH);

digitalWrite (F,LOW);

digitalWrite (G,HIGH);

digitalWrite (H,HIGH);

digitalWrite (I,HIGH);

digitalWrite (J,HIGH);

digitalWrite (K,HIGH);

digitalWrite (L,HIGH);

digitalWrite (M,LOW);

digitalWrite (N,HIGH);

delay (tempo);

}

The bottle was supposed to look like this: