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[on:]

So I'm trying to make a code that does this:
When a button is pushed:
move servo to 170, turn LED on and LED2 off

When a button is released:
move servo to 10, turn LED off and LED2 on

The servo works, but LED is on constantly and LED2 doesn't turn on at all
I know it's not the wiring because a simpler code turns the LED when the button is pushed (although the wiring for LED2 might be a little bit off, but I don't think so).

Here's the code:

#include <Servo.h>
 
Servo myservo;

const int BUTTON = 7;
const int LED = 13;
const int LED2 = 2;
int pos = 0;
int val = 0;

void setup()
{
  myservo.attach(9);
      pinMode(BUTTON, INPUT);
      pinMode(LED, OUTPUT);
      pinMode(LED2, OUTPUT);
}

void loop () {
  val = digitalRead(BUTTON);
  
  if (val == HIGH) {
    myservo.write (pos = 170);
    digitalWrite(LED, HIGH);
    digitalWrite(LED2, LOW);
  } else {
    myservo.write (pos = 10);
    digitalWrite(LED, LOW);
    digitalWrite(LED, HIGH);
  }
}

On a slightly separate note, if anyone could tell me how to stop the servo from spazzing out when it gets to 170, that would be great. Thanks!

[Reply #1 on:]

Code:

    myservo.write (pos = 170);

should be

Code:

    myservo.write(170);

and

Code:

    myservo.write (pos = 10);

should be

Code:

    myservo.write(10);

Code:

    digitalWrite(LED, LOW);
    digitalWrite(LED, HIGH);

one of these should be LED2

How are the buttons wired ?  Any pullup/down resistors, or are the input pins floating when the buttons are not pressed ?

[Reply #2 on:]

Wow! Thanks so much! It was that missing 2 that broke things, and now everything is working! The (pos = 170) and (pos = 10) were working, but I like the simplicity of your version better. Thanks again!

And lastly, the little servo problem I posted at the end. When it gets to 170, it starts twitching and making clicking noises. It's as if it's trying to go farther but it can't. Know how I can solve this? Thanks in advance!

[Reply #3 on:]

Have you tried changing to 'my' way of doing myservo.write(), which is the correct way of doing it, by the way.

[Reply #4 on:]

I did indeed. But the problem persists!

[Reply #5 on:]

Try this simple program

Code:

#include <Servo.h>

Servo myservo;

void setup()
{
  myservo.attach(9);
  myservo.write(170);
}

void loop () {}

Does the servo behave as expected or does it still jitter ?

[Reply #6 on:]

Maybe the servo doesn't go to 170.
Try 160 or 150, or use the writeMicroseconds method to test the servo limits.

[Reply #7 on:]

"LED's won't do what I tell them to do"

Have you tried another language other than English? Where were the LED's manufactured? They might be Chinese, Try Chinese

[Reply #8 on:]

The biter is bit 

Have you tried another language other than English? Where were the LED's manufactured? They might be Chinese, Try Chinese

LED's

Wrong

They might be Chinese, Try Chinese

Wrong