It is necessary to combine the work of a photoresistor and a potentiometer. Who will help?

Question

Arduino

I need to make it so that the servo can be controlled by a photoresistor or a potentiometer, for example, I want it to turn from the light, but if I don’t want it, then from the potentiometer.
wrote this code, but the movement is jerky
# include
Servo nikiServo;
intservoPin=9;
int photoPin = 0; // the first photoresistor is connected to the 0th analog input
int potPin = 2; // second photoresistor
int val1 = 1; // variables for storing the value of the input voltage
int val2 = 1; //
void setup()
{
Serial.begin(9600);
nikiServo.attach(servoPin);
}
void loop()
{
val1 = analogRead(photoPin); // read the value from the photoresistors
val2 = analogRead(potPin);
Serial.print("values: "); // output them to the COM port
Serial.print(val1);
Serial.print(" : ");
Serial println(val2);
delay(500);
if(val1>val2) // if the illumination of one is greater, turn
on { // the corresponding LED, and turn off the second one
int fot=analogRead(photoPin);
int pos=map(fot,490,630,0,180);
nikiServo.write(pos);
}
else
{
int fot=analogRead(potPin);
int pos=map(fot,0,400,0,180);
nikiServo.write(pos);
}
}

Answer 1

Tell me, please, in more detail
int potPin = 2; // второй фоторезистор- is it still a photoresistor? Or a potentiometer?
Twitching may well be due to uneven lighting. Those. light hits the photoresistor in different ways, the signal from it is uneven.

Answer 2

What about the option when the value of the potentiometer is less, say 5 (i.e. the voltage coming from the potentiometer is close to zero) we read the photoresistor, if on the potentiometer from 5 to 1023 it comes to the ADC, then we convert this value into an angle angle = map(potPin, 5, 1023, 0, 180)

Answer 3

And how do you know when you want to switch to control from a potentiometer and vice versa?
Now you have: who has abs. more value - he won.
Perhaps, if you need to "correct" the brains of the machine a little and for a short time, then you can remember the value of the potentiometer and compare each poll with the current one. If it has changed, then they switched to manual control. After N seconds of inactivity, return control to the photoresistor, and the smoothness of the control transition will be invented.