i wanted to try and make my own project because i had the parts needed for it.
i want to build a parking assistant that blinks faster the closer you get. on top of it i want a speaker to make a sound when the LED blinks.
my current code makes it so it constantly is on and makes noise even when i remove distance.
circuit: https://i.imgur.com/bOkvBmV.png
Parksensor_-Sketch_kagelar.ino (1.15 KB)
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Please post your code.
TheMemberFormerlyKnownAsAWOL:
Please post your code.
// defines pins numbers
const int trigPin = 9;
const int echoPin = 10;
const int buzzer = 11;
const int ledPin = 13;
// defines variables
long duration;
int distance;
int safetyDistance;
void setup() {
long duration (20);
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
pinMode(buzzer, OUTPUT);
pinMode(ledPin, OUTPUT);
Serial.begin(9600); // Starts the serial communication
}
void loop() {
// Clears the trigPin
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echoPin, HIGH);
// Calculating the distance
distance= duration*0.034/2;
safetyDistance = distance;
if (safetyDistance <= 5){
digitalWrite(buzzer, HIGH);
digitalWrite(ledPin, HIGH);
}
else{
digitalWrite(buzzer, LOW);
digitalWrite(ledPin, LOW);
}
// Prints the distance on the Serial Monitor
Serial.print("Distance: ");
Serial.println(distance);
}
You're pinging too frequently.
Slow it down to no more than about 20Hz
Please remember to use code tags when posting code.
