Arduino programming exercises using Uno Microcontroller Write a program that operates a train crossing light. The lights should flash at a rate of 2 Hz (on, off, on, off in 1 second) and operate for 20 seconds. How do I make it operate for 20 seconds? My code: int RedLED = 7; int GreenLED = 3; void setup() { pinMode(RedLED, OUTPUT); pinMode(GreenLED, OUTPUT); } void loop() {
Arduino
Write a program that operates a train crossing light. The lights should flash at a rate of 2 Hz (on, off, on, off in 1 second) and operate for 20 seconds.
How do I make it operate for 20 seconds?
My code:
int RedLED = 7;
int GreenLED = 3;
void setup() {
pinMode(RedLED, OUTPUT);
pinMode(GreenLED, OUTPUT);
}
void loop() {
{
digitalWrite(RedLED, HIGH); // it will set led to on mode
delay(1000); //it will wait for 1 second before turning off the LED
digitalWrite(RedLED, LOW); // It will turn off the LED
delay(1000); // It will wait for 1 second before Turning the LED High again.
digitalWrite(GreenLED, HIGH); // it will set led to on mode
delay(1000); //it will wait for 1 second before turning off the LED
digitalWrite(GreenLED, LOW); // It will turn off the LED
delay(1000); // It will wait for 1 second before Turning the LED High again.
}
}
int RedLED = 7;
int GreenLED = 3;
void setup() {
pinMode(RedLED, OUTPUT);
pinMode(GreenLED, OUTPUT);
}
void loop() {
{
if (millis() < 20000) {
digitalWrite(RedLED, HIGH); // it will set led to on mode
delay(1000); //it will wait for 1 second before turning off the LED
digitalWrite(RedLED, LOW); // It will turn off the LED
delay(1000); // It will wait for 1 second before Turning the LED High again.
digitalWrite(GreenLED, HIGH); // it will set led to on mode
delay(1000); //it will wait for 1 second before turning off the LED
digitalWrite(GreenLED, LOW); // It will turn off the LED
delay(1000); // It will wait for 1 second before Turning the LED High again.
} else {
}
}
}
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