Act-30 Rover.

Robot Coche con Motores y Ultrasonido

https://www.tinkercad.com/things/jJN3f9Mmyys

int Distancia = 0;

long readUltrasonicDistance(int triggerPin, int echoPin)

{

pinMode(triggerPin, OUTPUT); // Clear the trigger

digitalWrite(triggerPin, LOW);

delayMicroseconds(2);

// Sets the trigger pin to HIGH state for 10 microseconds

digitalWrite(triggerPin, HIGH);

delayMicroseconds(10);

digitalWrite(triggerPin, LOW);

pinMode(echoPin, INPUT);

// Reads the echo pin, and returns the sound wave travel time in microseconds

return pulseIn(echoPin, HIGH);

}

void setup()

{

Serial.begin(9600);

pinMode(1, OUTPUT);

pinMode(2, OUTPUT);

pinMode(3, OUTPUT);

pinMode(4, OUTPUT);

}

void loop()

{

Distancia = 0;

Distancia = 0.01723 * readUltrasonicDistance(9, 8);

Serial.println(Distancia);

if (Distancia <= 20) {

Serial.println("Atras");

digitalWrite(1, LOW);

digitalWrite(2, HIGH);

digitalWrite(3, HIGH);

digitalWrite(4, LOW);

delay(1000); // Wait for 1000 millisecond(s)

} else {

Serial.println("Adelante");

digitalWrite(1, HIGH);

digitalWrite(2, LOW);

digitalWrite(3, LOW);

digitalWrite(4, HIGH);

delay(1000); // Wait for 1000 millisecond(s)

}

}

https://www.tinkercad.com/things/fAqB6hjB8JR-l293

https://www.tinkercad.com/things/4K6mJKRJiwX-l293-h-bridge

http://robots-argentina.com.ar/didactica/manejo-de-potencia-para-motores-con-el-integrado-l293d/

https://youtube.com/playlist?list=PL6kQim6ljTJvzDRfrfEIeAB313i_AYpJT

http://www.tallertecno.com/curso_scratch/c_scratch6.html