Beginner needs basic help

Projects Programming
1

So I have done this simple code with continuous rotation servos

#include <Servo.h>
Servo servoLW;

void setup() {
servoLW.attach(9); // Attaches servoLW to pin 9
servoLW.write(180);
delay(3000);
servoLW.write(0);
delay(3000);
servoLW.write(90);
}

The servo does everything in the code nicely but then the servo continues to repeat the servoLW.write(180) afterwards.

What have I done wrong???

2

You mean it keeps doing full speed in the 180 direction or is it looping through the whole process?

3

It goes full speed in the same direction for about 3 secs, then stops for about 3 secs, and repeats that over and over.

4

Is that the entirety of your actual code?
Maybe it still needs a
void loop(){
}

even if you have nothing in it.

As for the behavior you want- spin one direction for 3 seconds, spin the other direction for 3 seconds, and THEN stop for good?

5

Yes thats the entire code. I thought once it ran what I wanted it to, it would just come to a stop forever.

I'm unsure of what i would put in the loop to fix this, any suggestions?

6

Without the loop() it crashes and restarts ..?? (Weird though).

7

How can the sketch compile without loop()?

8

Good question. Won't compile on my Sketch.