myservo.detach() doesn't work

Projects Programming
1

Hey guys!

Somehow if I use the servo.detach() method, I still can't use the Pins 9 and 10 for PWM altough that is what it sais in the description of the Servo library

e.g.

Servo servo;

...

servo.attach(6);
servo.write(90);
delay(1000);
servo.detach();

analogWrite(9, 200);

Does somebody know why it doesn't work properly?7

Cheers

Torrentula

2

Does somebody know why it doesn't work properly?7

Based on the code snippet, no. You need to post all of your code.

3

I'm having a similar problem. I am using a Teensy 2.0 as a small platform for a tiny tracked robot I am building to do mapping with. I want to use a servo to sweep some sensors back and forth.

I have it attached to pin 4

Here is a small snippet of code.

#include <Servo.h>
Servo myservo;

int righttrack  = 14;
int lefttrack = 15;
// SMD LED onboard Teensy 2.0
int led = 11;

void setup() {
pinMode(righttrack, OUTPUT);
pinMode(lefttrack, OUTPUT);
pinMode(led, OUTPUT);

//center servo (attach pin 4)
myservo.attach(4);
myservo.write(90);

//detach servo so I can use PWM
myservo.detach();
}

void loop() {

// Testing (Drive robot foward 1 second)
  analogWrite (righttrack, 250);
  analogWrite (lefttrack, 250); 
  delay(1000);

// Stop Motors to attach servo
  analogWrite (righttrack, 0);
  analogWrite (lefttrack, 0);

//attach servo and sweep
myservo.attach(4);
myservo.write(180);
delay(1000);
myservo.write(0);
delay(1000);
myservo.write(90);
delay(1000);

// Detach servo to use PWM 
  myservo.detach();
  delay(1000);
  
}

If I use Servo.h pins 9 and 10 are unavailable even if I use myservo.detach();
If I use PWMServo.h the opposite is true as pins 14 and 15 are unavailable even if I use myservo.detach();

Does anyone know why myservo.detach(); does not work?

Even though pins 9 and 10 are not used in the test code above I do plan on using them to drive other peripherals on my robot. The above code appears to function properly but if pins 9 and 10 are used with analogWrite(pin, value); they do not function

4

Did anyone read the Servo library reference over at the Reference section on the Main Site?
Just a thought :wink:

5

Description

Detach the Servo variable from its pin. If all Servo variables are detached, then pins 9 and 10 can be used for PWM output with analogWrite().

With all servos detached, analogWrite(); does not work.

6

I am using a Teensy 2.0

Check the name on the door on your way into this forum. See Teensy anywhere in the name?

7

PaulS guess my specific arduino platform is just not good enough for you.

Personal insult removed. Moderator.

I bid you good day sir,

8

w00tb0t:
PaulS guess my specific arduino platform is just not good enough for you. Removed here too.
Moderator.

I bid you good day sir,

Considering that your contribution to the forum consists of three posts begging for help, and PaulS's contribution consists of many thousands of posts providing help, I don't think you're in any position to insult him. If your question is not about Arduino, perhaps you'll find people willing and able to help if you ask on a forum specific to your platform. Although, with your attitude, perhaps you won't.

9

(deleted)