push button controls two different servo

Using Arduino Motors, Mechanics, Power and CNC
1

Hi guys

if the position of the servos is between (0-50) degrees , when button is pressed
servo (a) moves from (0-50) to 180 degrees , then servo (b) motor moves from(0-50) to 180 degrees

however, when button is pressed if the position of the servo is between (180-90) degrees, then servo (b) moves from (180-90) to 0 degrees, then servo (a) moves from (180-90) to 0 degrees

I added led, to show when motors are moving.

#include <Servo.h>

Servo myservoa; // create first servo object to control First servo named myservoa
Servo myservob; // create second servo object to control Second servo named myservob
// twelve servo objects can be created on most boards

int pos = 0; // variable to store the servo position
int pos2; // place holder for pos value
int inPin = 7; // choose the input pin(for a pushbutton)
int ledPin = 12; // choose the pin for the LED
int val = 0;

void setup() {
myservoa.attach(9); // attaches the servo(a) on pin 9 to the servo object
// myservob.attach(3); // attaches the servo(b) on pin 10 to the servo object
pinMode(ledPin,OUTPUT); // declare LED as output
pinMode(inPin,INPUT); // declare pushbutton as input
}

void loop() {

val = digitalRead(inPin); // set the val
if (val == LOW){
digitalWrite(ledPin, LOW); // turn LED OFF
}

else {
digitalWrite(ledPin,HIGH); // turn LED ON

if (pos == 0) // goes from 0 degrees to 180 degrees
// when the
{
pos2 = pos;

for (pos2 == 0 ; pos2 <= 180; pos2 +=10){
myservoa.write(pos2); // tell servo(a) to go to position variable 'pos'
delay(25); //waits 1.5 seconds for the for servo(a) to reach position
}
pos2 = pos;

for (pos2 == 0; pos2 <= 180; pos2 +=10){
myservob.write(pos2); // tell servo(a) to go to position variable 'pos'
delay(25); //waits 1.5 seconds for the for servo(a) to reach position
pos2+=10;
}
}

else { // goes from 180 degrees to 0 degrees

pos2 = pos;

for (pos2 >0; pos2 >= 0; pos2 -=10){
myservoa.write(pos2); // tell servo(a) to go to position variable 'pos'
delay(25); //waits 1.5 seconds for the for servo(a) to reach position
}
pos2 = pos;

for (pos2 >0; pos2 >=0; pos -=10){
myservoa.write(pos2); // tell servo(a) to go to position variable 'pos'
delay(25); //waits 1.5 seconds for the for servo(a) to reach position
pos2-=10;
}
pos = 0;
}

}

}

2

Please put your code in its own window as seen in other posts. This can be done by placing     [code]  and [/code]  around the code or use the </> icon. This makes it easier for others to read.

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Weedpharma

3 
void setup() {
  myservoa.attach(9);        // attaches the servo(a)  on pin 9 to the servo object
 // myservob.attach(3);      // attaches the  servo(b)  on pin 10 to the servo object
  pinMode(ledPin,OUTPUT);    // declare LED  as output
  pinMode(inPin,INPUT);     // declare pushbutton as input

notice the commented out myservob

for (pos2 == 0; pos2 <= 180; pos2 +=10){
        myservob.write(pos2);            // tell servo(a) to go to position variable 'pos'
        delay(25);                     //waits 1.5 seconds  for the for servo(a) to reach position
        pos2+=10;
      }

your asking to write to a servo thats not attached (whilst it's commented out) for starters