Hi for some reason the serial monitor is outputting gibberish. I have an external power supply 9V and a relay that powers the motor, as well as an ultrasonic sensor. Here is my code, I appreciate all the help!
const int motor = 8;
const int trig = 2;
const int echo = 3;
// defines variables
long duration;
int distance;
void setup() {
pinMode(trig, OUTPUT); // Sets the trigPin as an Output
pinMode(echo, INPUT); // Sets the echoPin as an Input
pinMode(motor, OUTPUT);
Serial.begin(9600); // Starts the serial communication
}
void loop() {
// Clears the trigPin
digitalWrite(trig, LOW);
delayMicroseconds(20);
// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trig, HIGH);
delayMicroseconds(100);
digitalWrite(trig, LOW);
// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echo, HIGH);
// Calculating the distance
distance = duration * 0.034 / 2;
// Prints the distance on the Serial Monitor
Serial.print("Distance: ");
Serial.println(distance);
if (distance > 8) {
digitalWrite(motor, HIGH);
}
else {
digitalWrite(motor, LOW);
}
}
Toothpastecodesonic.ino (980 Bytes)