In need of assistance please

If I'm reading this correctly, the problem you are having is that the servos jump back to zero (or 90 or the start position or the default position, whatever you wish to call it.) when you release the joystick. This is a fairly simple problem in the code and rather easy to fix. With any problem like this, let's make it as simple as possible and work from there (Fewer parts can after all be a bit less of a headache). We can start out with one axis and one servo.

Currently in your program, whenever you read from the joystick, you are moving the servo. To avoid the problem you are having, you need a way to remember where the servo should be, check if you do need to move (i.e. not at the start position on the joystick) and handle the change from there. To do this, you will need a variable to hold the current position, and another to hold the new reading from the joystick. You can then check the conditions of these, such as if they match, using an if statement.

One way to make the solution simpler while you start out is to interpret zero as "do not move" rather than a position and to instead use a button (such as depressing the joystick) to mean "return to start position". This may require additional buttons as you start introducing the other axis, but that is a concern for later. To some extent, you need to understand how the joysticks work. Inside the stick is a potentiometer, setup in a way that means the start position (zero) is actually a value such as 5k ohms (This will vary depending on the part, refer to the datasheet or measure it with your multimeter). When this is read by your arduino, it will be around 512 (Extreme left being zero, extreme right being 1024, you will need to check those). One way your program could work is to look at the value, if it is not "zero" and is different to the current value, move to it. If it is "zero", or the same as the current value, do nothing. This would look something like the code below. This is by no means the best solution, and may not work exactly as it should, it may however give you an idea of what you are aiming for. This example will produce a lot of jitter when you run it and the reset button requires debouncing for it to work correctly.

#include <Servo.h>

const int cam1panPin = 3; //Cam 1, Pan servo pin

const int joyH = 3;      // L/R Parallax Thumbstick Pin

Servo cam1pan;           // create servo object to control a servo

int c1Pan_OldVal = 512;  //Old value for comparison

int c1Pan_Pos = 512;     //Current position

int resetButtonPin = 5; 

void setup()
{
  // Servo 
  cam1pan.attach(cam1panPin);  // attaches the servo
  
  // initialize the pushbutton pin as an input:
  pinMode(resetButtonPin, INPUT);   

  // Inizialize Serial
  Serial.begin(9600);
}

void loop()
{
  // Display Joystick values using the serial monitor
  outputJoystick();

  int c1Pan_temp = analogRead(joyH);
  
  if(c1Pan_temp == 512) //If in start position. May need to be a range of values
  {
    //Do nothing
  }
  else if(c1Pan_temp != c1Pan_OldVal)
  {
    //If different to old value, move
    c1Pan_Pos = map(c1Pan_temp, 0, 1023, 0, 179);
    cam1pan.write(c1Pan_Pos);
    
    //Save current reading as old
    c1Pan_OldVal = c1Pan_temp;
  }
  
  //Read reset button
  //Requires debouncing
  int buttonState = 0;
  
  //If button is pressed, go back to middle
  buttonState = digitalRead(resetButtonPin);
  if(buttonState = HIGH)
  {
    c1Pan_Pos = map(512, 0, 1023, 0, 179);
    cam1pan.write(c1Pan_Pos);
    
    //Save current reading as old
    c1Pan_OldVal = 512;
  }
  else
  {
    //Do nothing
  }

  delay(15);                                       // waits for the servo to get there
}

/**
 * 
 * Display joystick values
 * 
 */

void outputJoystick()
{
  Serial.print(analogRead(joyH));
  Serial.print ("---");
}

The short (and probably much less confusing) version of this is that you need to look into using if statements, and use them to make sure the position only changes when you want it to. With any luck this should help you solve your problem!

If I'm reading this correctly, the problem you are having is that the servos jump back to zero (or 90 or the start position or the default position, whatever you wish to call it.) when you release the joystick. This is a fairly simple problem in the code and rather easy to fix. With any problem like this, let's make it as simple as possible and work from there (Fewer parts can after all be a bit less of a headache). We can start out with one axis and one servo.

Currently in your program, whenever you read from the joystick, you are moving the servo. To avoid the problem you are having, you need a way to remember where the servo should be, check if you do need to move (i.e. not at the start position on the joystick) and handle the change from there. To do this, you will need a variable to hold the current position, and another to hold the new reading from the joystick. You can then check the conditions of these, such as if they match, using an if statement.

One way to make the solution simpler while you start out is to interpret zero as "do not move" rather than a position and to instead use a button (such as depressing the joystick) to mean "return to start position". This may require additional buttons as you start introducing the other axis, but that is a concern for later. To some extent, you need to understand how the joysticks work. Inside the stick is a potentiometer, setup in a way that means the start position (zero) is actually a value such as 5k ohms (This will vary depending on the part, refer to the datasheet or measure it with your multimeter). When this is read by your arduino, it will be around 512 (Extreme left being zero, extreme right being 1024, you will need to check those). One way your program could work is to look at the value, if it is not "zero" and is different to the current value, move to it. If it is "zero", or the same as the current value, do nothing. This would look something like the code below. This is by no means the best solution, and may not work exactly as it should, it may however give you an idea of what you are aiming for. This example will produce a lot of jitter when you run it and the reset button requires debouncing for it to work correctly.

#include <Servo.h>

const int cam1panPin = 3; //Cam 1, Pan servo pin

const int joyH = 3;      // L/R Parallax Thumbstick Pin

Servo cam1pan;           // create servo object to control a servo

int c1Pan_OldVal = 512;  //Old value for comparison

int c1Pan_Pos = 512;     //Current position

int resetButtonPin = 5; 

void setup()
{
  // Servo 
  cam1pan.attach(cam1panPin);  // attaches the servo
  
  // initialize the pushbutton pin as an input:
  pinMode(resetButtonPin, INPUT);   

  // Inizialize Serial
  Serial.begin(9600);
}

void loop()
{
  // Display Joystick values using the serial monitor
  outputJoystick();

  int c1Pan_temp = analogRead(joyH);
  
  if(c1Pan_temp == 512) //If in start position. May need to be a range of values
  {
    //Do nothing
  }
  else if(c1Pan_temp != c1Pan_OldVal)
  {
    //If different to old value, move
    c1Pan_Pos = map(c1Pan_temp, 0, 1023, 0, 179);
    cam1pan.write(c1Pan_Pos);
    
    //Save current reading as old
    c1Pan_OldVal = c1Pan_temp;
  }
  
  //Read reset button
  //Requires debouncing
  int buttonState = 0;
  
  //If button is pressed, go back to middle
  buttonState = digitalRead(resetButtonPin);
  if(buttonState = HIGH)
  {
    c1Pan_Pos = map(512, 0, 1023, 0, 179);
    cam1pan.write(c1Pan_Pos);
    
    //Save current reading as old
    c1Pan_OldVal = 512;
  }
  else
  {
    //Do nothing
  }

  delay(15);                                       // waits for the servo to get there
}

/**
 * 
 * Display joystick values
 * 
 */

void outputJoystick()
{
  Serial.print(analogRead(joyH));
  Serial.print ("---");
}

The short (and probably much less confusing) version of this is that you need to look into using if statements, and use them to make sure the position only changes when you want it to. With any luck this should help you solve your problem!