#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd( 0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE );
//Variables varias
int led1 = 12;
int led2 = 11;
int led3 = 10;
int led4 = 9;
int led5 = 8;
int led6 = 7;
int led7 = 6;
int led8 = 5;
int led9 = 4;
int buzzer = A0;
int interruptor = 13;
//Variables sensor de ultrasonidos
long distancia;
long tiempo;
int pinecho = 2; // echo es el que recibe el pulso
int pintrig = 3; // trig es el que emite el pulso
void setup() {
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("SENS PROXIMIDAD");
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
pinMode(led8, OUTPUT);
pinMode(led9, OUTPUT);
pinMode(buzzer, OUTPUT);
pinMode(interruptor, INPUT);
pinMode(pinecho, INPUT);
pinMode(pintrig, OUTPUT);
}
void loop() {
//Proceso de medida del sensor de ultrasonidos
digitalWrite(pintrig, LOW); // para estabilizar el sensor
delay(10);
digitalWrite(pintrig, HIGH);
delay(10); // generamos un pulso ultrasonico durante 10 milisegundos
digitalWrite(pintrig, LOW);
tiempo = pulseIn(pinecho, HIGH); // almacenamos en la variable tiempo el
//tiempo que el pin echo ha estado recibiendo
//un pulso "HIGH"
distancia = ((tiempo/2) / 29);
/* El pin echo almacena el tiempo que tarda la onda del pulso de ida y vuelta,
por ello la dividimos entre 2. Luego la dividimos entre 29 para cambiar de
unidad la velocidad del sonido */
if(digitalRead(interruptor) == HIGH) {
lcd.noDisplay();
lcd.off();
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
analogWrite(buzzer, 0);
}
else {
lcd.on();
lcd.setCursor(0,1);
lcd.print("Distancia:");
if(distancia > 300) {
lcd.print("---"); }
else {
if(distancia < 100 && distancia > 0) {
lcd.print("0"); }
if(distancia < 10 && distancia > 0) {
lcd.print("0"); }
if(distancia > 0) {
lcd.print(distancia);
lcd.print(" cm"); }
}
if(distancia < 101 && distancia > 90) {
digitalWrite(led1, HIGH);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
analogWrite(buzzer, 0); }
if(distancia < 91 && distancia > 80) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
analogWrite(buzzer, 0); }
if(distancia < 81 && distancia > 70) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
analogWrite(buzzer, 0); }
if(distancia < 71 && distancia > 60) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
analogWrite(buzzer, 0); }
if(distancia < 61 && distancia > 50) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
analogWrite(buzzer, 0); }
if(distancia < 51 && distancia > 40) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
analogWrite(buzzer, 0); }
if(distancia < 41 && distancia > 30) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
analogWrite(buzzer, 1024);
delay(400);
analogWrite(buzzer, 0);
delay(400); }
if(distancia < 31 && distancia > 20) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
digitalWrite(led8, HIGH);
digitalWrite(led9, LOW);
analogWrite(buzzer, 1024);
delay(200);
analogWrite(buzzer, 0);
delay(200); }
if(distancia < 21 && distancia > 10) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
digitalWrite(led8, HIGH);
digitalWrite(led9, HIGH);
analogWrite(buzzer, 1024);
delay(100);
analogWrite(buzzer, 0);
delay(100); }
if(distancia < 11 && distancia > 0) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, HIGH);
digitalWrite(led4, HIGH);
digitalWrite(led5, HIGH);
digitalWrite(led6, HIGH);
digitalWrite(led7, HIGH);
digitalWrite(led8, HIGH);
digitalWrite(led9, HIGH);
delay(50);
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
delay(50);
analogWrite(buzzer, 1024); }
if(distancia > 101) {
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
digitalWrite(led4, LOW);
digitalWrite(led5, LOW);
digitalWrite(led6, LOW);
digitalWrite(led7, LOW);
digitalWrite(led8, LOW);
digitalWrite(led9, LOW);
analogWrite(buzzer, 0); }
delay(400);
}
}