this programming was developed to rotate on an UNO arduino plate, which is connected to electronic devices that form an ultrasonic prosuming sensor.
#include <Ultrasonic.h>
include ultrasonic library
#define pino_trigger 4
#define pino_echo 5
sets the value of the pins
const int ledVerde = 13;
const int ledAmarelo = 12;
const int ledVermelho = 11;
const int buzzer = 9;
sets the values of the LEDs and buzzer
float seno;
int frequencia;
defines the scope of the variables
void setup()
{
Serial.begin(9600);
Serial.println("Lendo dados do sensor...");
//Definindo pinos digitais
pinMode(ledVerde,OUTPUT); //13 como de saída.
pinMode(ledAmarelo,OUTPUT); //12 como de saída.
pinMode(ledVermelho,OUTPUT); //11 como de saída.
pinMode(buzzer, OUTPUT);
}
defines the exits of the pins
void loop()
{
//Le as informacoes do sensor, em cm e pol
float cmMsec, inMsec;
long microsec = ultrasonic.timing();
cmMsec = ultrasonic.convert(microsec, Ultrasonic::CM);
inMsec = ultrasonic.convert(microsec, Ultrasonic::IN);
//Exibe informacoes no serial monitor
Serial.print("Distancia em cm: ");
Serial.print(cmMsec);
Serial.print(" - Distancia em polegadas: ");
Serial.println(inMsec);
delay(100);
//Apagando todos os leds
digitalWrite(ledVerde,LOW);
digitalWrite(ledAmarelo,LOW);
digitalWrite(ledVermelho,LOW);
pinMode(buzzer, OUTPUT);
if(cmMsec > 20){
digitalWrite(ledVerde,HIGH);
noTone(buzzer);
}
if(cmMsec > 10 and cmMsec < 20){
digitalWrite(ledAmarelo,HIGH);
noTone(buzzer);
}
if(cmMsec < 10){
digitalWrite(ledVermelho,HIGH);
tocaBuzzer();
}
}
defines the logic of the operation of the alarm, such as approximation and connection of the buzzer. It also sets the buzzer speed and sensor delay.
void tocaBuzzer(){
for(int x=0;x<180;x++){
seno=(sin(x*3.1416/180));
frequencia = 2000+(int(seno*1000));
tone(buzzer,frequencia);
delay(2);
}
}
defines the operation of the buzzer.
