Wrong spinning servo!

Using Arduino Programming Questions
1

hello, im having trouble with servo's code
it isn't spinning 270 degrees. tho, I tried fixing it but it still isnt working

#include <Servo.h>   //servo library
Servo servo;     
int trigPin = 5;    
int echoPin = 6;   
int servoPin = 7;
int led= 10;
long duration, dist, average;   
long aver[3];   //array for average


void setup() {       
    Serial.begin(9600);
    servo.attach(servoPin);  
    pinMode(trigPin, OUTPUT);  
    pinMode(echoPin, INPUT);  
    servo.write(0);         //close cap on power on
    delay(100);
    servo.detach(); 
} 

void measure() {  
 digitalWrite(10,HIGH);
digitalWrite(trigPin, LOW);
delayMicroseconds(5);
digitalWrite(trigPin, HIGH);
delayMicroseconds(15);
digitalWrite(trigPin, LOW);
pinMode(echoPin, INPUT);
duration = pulseIn(echoPin, HIGH);
dist = (duration/2) / 29.1;    //obtain distance
}
void loop() { 
  for (int i=0;i<=2;i++) {   //average distance
    measure();               
   aver[i]=dist;            
    delay(10);              //delay between measurements
  }
 dist=(aver[0]+aver[1]+aver[2])/3;    

if ( dist<50 ) {
//Change distance as per your need
 servo.attach(servoPin);
  delay(1);
 servo.write(0);  
 delay(3000);       
 servo.write(270);    
 delay(1000);
 servo.detach();      
}
Serial.print(dist);
}`Preformatted text`
2

Hi itsmejoy,

welcome to the arduino-forum. For best support to you

RE-edit
your

first post

that your code is presented as a code-section by following this short tutorial.

best regards Stefan

3

Read the forum guidelines to see how to properly post code and some information on how to get the most from this forum.
Use the IDE autoformat tool (ctrl-t or Tools, Auto format) before posting code in code tags.

Please go back and fix your original post by highlighting the code and clicking the </> in the menu bar.
code tags new

After you go through an remove all of those extra ******

1 Like
4

Most hobby servos are limited to 0-180 degrees (if that). What makes you think that your servo will do 270 degrees?

1 Like
5

I'm pretty sure that your assumption that a servo can turn 270 degrees is wrong!
normal RC-servos turn 180 degrees some servo maybe 190 degrees.

Or if it is a continous rotation servo it will go on spinning and spinning and spinning.
Anyway you have to specify which exact type of servo you are using.
maybe now a days some digital servos are able to turn 270 degrees on an expanded pulsewith-range.

The standard servo-library limits the pulsewith from 1000 to 2000 microseconds. You can change this but it is unlikely that a standard RC-servo can cope with shorter pulses than 600 microseconds or longer pulses than 2400 microseconds.

If you really need a turning-angle of 270 degrees you could use one of these super-modified servos
https://www.01mechatronics.com/supermodified_servos_list_teaser

But these servos need a completely different kind of control-signal

best regards Stefan
but

1 Like
6

im sorry im a total beginner i didn't know this but thanks anyway! really appreciate ur help

7

write a detailed description of what you want to do.

There is a good chance that different solutions are possible

1 Like
8

i didn't know that i thought all the servos limits are 360, but thanks anyway

9

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