Answers, GPT Generated.

Outer legs → 5V and GND.
Middle leg → A0.
Serial Monitor → 9600 baud.

// Block 01: DECLARE
const int POT_PIN = A0;

// Block 02: INIT
void setup() {
  Serial.begin(9600);
  pinMode(POT_PIN, INPUT);
}

// Block 03: RUN
void loop() {
  int potValue = analogRead(POT_PIN);

  Serial.print("Potentiometer: ");
  Serial.println(potValue);

  delay(100);
}

// Block 04: LOGIC
// Nothing here yet.

Keep the potentiometer as a voltage divider.
Connect the LED to its adjustable output.

1. 5V → potentiometer leg 1 (outer).
2. Potentiometer leg 3 (outer) → GND.
3. Potentiometer leg 2 (middle) → 330Ω resistor → LED anode (+).
4. LED cathode (−) → the same GND.

Turn the knob. Change the brightness.
No code needed.

Keep the fixed resistor in series with the LED. The LED loads the divider, so brightness will not change evenly as you turn the knob.

Potentiometer: outer legs → 5V / GND; middle → A0.

Pin 3 → red, pin 4 → orange, pin 5 → green.
Each pin → its own 330Ω resistor → LED anode (+).
All LED cathodes (−) → GND.

One LED at a time: low → red · middle → orange · high → green.

// Block 01: DECLARE
const int POT_PIN = A0;

const int RED_LED_PIN = 3;
const int ORANGE_LED_PIN = 4;
const int GREEN_LED_PIN = 5;

// Block 02: INIT
void setup() {
  Serial.begin(9600);

  pinMode(POT_PIN, INPUT);
  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(ORANGE_LED_PIN, OUTPUT);
  pinMode(GREEN_LED_PIN, OUTPUT);
}

// Block 03: RUN
void loop() {
  int potValue = analogRead(POT_PIN);

  printReading(potValue);
  updateLeds(potValue);

  delay(100);
}

// Block 04: LOGIC
void printReading(int value) {
  Serial.print("Potentiometer: ");
  Serial.println(value);
}

void updateLeds(int value) {
  // Start with all LEDs off.
  digitalWrite(RED_LED_PIN, LOW);
  digitalWrite(ORANGE_LED_PIN, LOW);
  digitalWrite(GREEN_LED_PIN, LOW);

  // Choose one LED according to the reading.
  if (value < 341) {
    digitalWrite(RED_LED_PIN, HIGH);
  } else if (value < 682) {
    digitalWrite(ORANGE_LED_PIN, HIGH);
  } else {
    digitalWrite(GREEN_LED_PIN, HIGH);
  }
}