I need some help assigning the value of a controlp5 slider to a variable

goodbeebo

I need to assign the value of the speed slider to a variable and write that variable to the servo. Can you help me Here is my code:

import controlP5.*;
ControlP5 controlP5;  
import processing.io.*;
SoftwareServo servo;


void setup() {
  size(255,100);
  controlP5 = new ControlP5(this);
  controlP5.addSlider("Speed",0,180,0,10,10,200,30);
  servo = new SoftwareServo(this);
  servo.attach(4);
  servo.write(left);
  delay(200);
  exit();
  }

void draw(){
  background(100);

}

kfrajer

Format your code. Edit your post, select your code and hit ctrl+o.

Here are two different ways to access a slider value, or more like how to establish the relationship btw them. I commented out code that was not relevant to my demo. I hope this helps,

Kf

import controlP5.*; 
ControlP5 controlP5;
//import processing.io.*; 
//SoftwareServo servo;

int Speed=0;
int myColor=255;

void setup() { 
  size(255,400); 
  controlP5 = new ControlP5(this); 
  controlP5.addSlider("Speed", 0, 180, 0, 10, 10, 200, 30); 
  //servo = new SoftwareServo(this); 
  //servo.attach(4); 
  //servo.write(left); 
  //delay(200); 
  //exit();

    // add a vertical slider
  controlP5.addSlider("slider")
     .setPosition(10,250)
     .setSize(200,20)
     .setRange(0,250)
     .setValue(128)
     ;
}

void draw() { 
  background(0);
  fill(Speed);
  rect(0, 0, width, 100);

  fill(myColor);
  rect(0,200, width, 100);
}

void slider(float theColor) {
  myColor = color(theColor);
  println("a slider event. setting background to "+theColor);
}