hi, can you help me with the code for the speed every 1 second and print it.
I saw tutorials that subtracted distance 1 - distance 2 and the speed came out, but I do it and it doesn't come out.
escribe o pega el código aquí
int TRIG = 10; // trigger en pin 10
int ECO = 9; // echo en pin 9
int LED = 3; // LED en pin 3
int DURACION;
int DISTANCIA;
int distancia1=0;
int distancia2=0;
void setup()
{
pinMode(TRIG, OUTPUT); // trigger como salida
pinMode(ECO, INPUT); // echo como entrada
pinMode(LED, OUTPUT); // LED como salida
Serial.begin(9600); // inicializacion de comunicacion serial a 9600 bps
}
void loop()
{
digitalWrite(TRIG, HIGH); // generacion del pulso a enviar
delay(1); // al pin conectado al trigger
digitalWrite(TRIG, LOW); // del sensor
DURACION = pulseIn(ECO, HIGH); // con funcion pulseIn se espera un pulso
DISTANCIA = DURACION / 58.2; // distancia medida en centimetros
distancia1=DISTANCIA
Serial.print("La distancia en cm es:");
Serial.println(DISTANCIA); // envio de valor de distancia por monitor serial
delay(200); // demora entre datos
if (DISTANCIA <= 50 && DISTANCIA >= 0){ // si distancia entre 0 y 20 cms.
digitalWrite(LED, HIGH); // enciende LED
}
else{
digitalWrite(LED, LOW); // apaga LED
}
}
distance1 = ultrasonicRead(); //calls ultrasoninicRead() function below
delay(1000);//giving a time gap of 1 sec
distance2 = ultrasonicRead(); //calls ultrasoninicRead() function below
//formula change in distance divided by change in time
Speed = (distance2 - distance1)/1.0; //as the time gap is 1 sec we divide it by 1.
//Displaying Speed
Serial.print("velocidad en cm/s :");
Serial.println(Speed);
I was trying this way but the "ultrasonicRead ()" does not recognize me
Post your complete code (for post #3). I suspect thast you pulled this from the internet somewhere and did not copy evevrything; ultrasonicRead() is probably a function that contains this part of your code
digitalWrite(TRIG, HIGH); // generacion del pulso a enviar
delay(1); // al pin conectado al trigger
digitalWrite(TRIG, LOW); // del sensor
DURACION = pulseIn(ECO, HIGH); // con funcion pulseIn se espera un pulso
DISTANCIA = DURACION / 58.2; // distancia medida en centimetros
Rewriting it for your scenario will probably be
uint32_t ultrasonicRead()
{
digitalWrite(TRIG, HIGH); // generacion del pulso a enviar
delay(1); // al pin conectado al trigger
digitalWrite(TRIG, LOW); // del sensor
uint32_t duration = pulseIn(ECO, HIGH); // con funcion pulseIn se espera un pulso
return (duration / 58.2); // distancia medida en centimetros
}
Code not tested nor compiled.
Your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project See About the IDE 1.x category.
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