I need help with my code on Arduino Nano

Other Hardware Sensors
1

ENGLISH:
Hello, my name is Lucas and I'm new to the world of programming via Arduino, I'm working on a project for glasses for the visually impaired and in this pair of glasses in its base programming I have to use an HC-SR04 ultrasonic sensor, along with a buzzer on an Arduino nano, the ultrasound sensor, when detecting an object at a distance of less than 1.5 meters (150 centimeters) will send a signal to the buzzer that will make a sound at a frequency of 523hz for 3 seconds. When checking the code, the Arduino IDE application showed that my code has an error:

In function 'void loop()':
22:3: error: 'delayMicrosecods' was not declared in this scope
22:3: note: suggested alternative: 'delayMicroseconds'
36:3: error: expected ';' before 'float'
39:20: error: 'a1' was not declared in this scope
39:20: note: suggested alternative: 'A1'

avre[0m 1.8.6 e[90m/home/tcad/.arduino15/packages/arduino/hardware/avr/1.8.6e[0m
exit status 1

I am unable to correct this error, can anyone help me please? Below I leave my current code.

#define trigPin1 3
#define echoPin1 4
#define buzzer 5

void setup() {
  pinMode (trigPin1, OUTPUT);
  pinMode (echoPin1, INPUT);

  pinMode (buzzer, OUTPUT);

  Serial.begin(9600); // inicializa biblioteca 
}

void loop() {
  // Serial.println ("Passagem na sequencia distancia1")
  float duration1, distance1;

  digitalWrite(trigPin1, LOW);
  delayMicroseconds(2); // delay de 2 microsegundos 

  digitalWrite (trigPin1, HIGH);
  delayMicrosecods(10); //delay de 10 microsegundos

  digitalWrite(trigPin1,LOW);
  duration1 = pulseIn(echoPin1, HIGH); //pulseIn Lê o tempo entre a chamada e o pino entrar até em sinal HIGH

  //esse calculo é baseado em s= v . t, lembrando que o tempo vem dobrado

  //porque é o tempo de ida e volta do ultrassom
  distance1= (duration1/2) / 29.1;

  delay(50)

  //fim de leitura distancia1

  float a1=distance1;
  //float tempo=(float) millis()/60000; //leitura do tempo
    // acompanhamento na saida serial para dados de distancia
    Serial.println(a1);



if(a1<150.){
  tone( buzzer, 523);

  delay(300);
  noTone(buzzer);

 //delay (500);
}
}
2

You misspelled delayMicroseconds as delayMicrosecods in line 22, and you forgot the semicolon after delay(50) in line 32.

1 Like
4

Obrigado mano, ajudou muito! Eu não tinha percebido esses pequenos detalhes.

5

Thanks for the tip and the solution, thank you very much!

6

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