Sequencial de LEDs com velocidade ajustável

1// ─────────────────────────────────────────
2//   BlueGrays · bluegrays.com
3//   LED Chaser with Adjustable Speed
4// ─────────────────────────────────────────
5// A potentiometer sets the speed of the walking LED effect. A0 is read at
6// every step and its 0-1023 value becomes the delay time (ms).
7//
8// Pins:
9//   D2, D3, D4, D5, D6, D7 -> 6 LEDs (in order)
10//   Each LED with a 330 ohm resistor
11//   A0 -> Potentiometer wiper
12//   (outer legs to 5V and GND)
13
14int ledPins[] = {2, 3, 4, 5, 6, 7};   // LED pins in lighting order
15int potValue;                         // Pot value = delay (ms)
16
17void setup() {
18  // Set all LED pins as outputs
19  for(int i = 0; i < 6; i++) {
20    pinMode(ledPins[i], OUTPUT);
21  }
22}
23
24void loop() {
25  for(int i = 0; i < 6; i++) {
26    potValue = analogRead(A0);        // Read the speed (0-1023)
27    digitalWrite(ledPins[i], HIGH);
28    delay(potValue);                  // Wait as many ms as the pot value
29    digitalWrite(ledPins[i], LOW);
30  }
31}
32