Micro Servo+ Arduino

Projects Programming
1

When I press the button, the servo keeps running..., but if I press again, it will still run one time of the loop.
Have a look the " Video "
I don't know what's going on.
Can anyone help me??

My code is in below.

Thanks!

#include <Servo.h> 

int buttonPin = 9;  
int servoPin = 8;
int buttonState;

Servo myservo;  

int pos = 0;   

void setup() 
{ 
  myservo.attach(servoPin); 
  pinMode(buttonPin, INPUT);
} 

void loop() 
{ 
  int counter=0;
  buttonState = digitalRead(buttonPin);
  
  if (buttonState == HIGH){
    counter=1;
  }
  
  if(counter==1){
    
    for (pos = 0; pos <= 180; pos += 1) {
      // in steps of 1 degree
      myservo.write(pos);           
      delay(5);                    
    }
    for (pos = 180; pos >= 0; pos -= 1) { 
      myservo.write(pos);           
      delay(5);                     
    }
  }
}
2

How IS the switch wired? How is the servo powered?

  int counter=0;
  buttonState = digitalRead(buttonPin);
 
  if (buttonState == HIGH){
    counter=1;
  }

That's a lot of code to set counter to the output of the digitalRead() function.

  int counter = digitalRead(buttonPin);

Neither buttonState OR counter are needed.

   if(digitalRead(buttonPin) == HIGH)
   {
      // wave the servo stupidly
   }
3

Sorry, the video URL was wrong. Now, it is the right one. VIDEO

and the switch is wired like this.

821×537 56.7 KB

servo is powered Arduino from the 5v pin.

4

servo is powered Arduino from the 5v pin.

Stop doing that. Servos often require more current than the Arduino can provide.

5

PaulS:
Stop doing that. Servos often require more current than the Arduino can provide.

Doesn't that depend on the amount of torque required by the application? :slight_smile:

6

Danois90:
Doesn't that depend on the amount of torque required by the application? :slight_smile:

No. It depends on the amount of current the servo draws. Which may be related to torque, but not directly.