/*
 * ============================================================
 *  SG90 Servo Motor — Sample Sketch
 *  Tishvi Electronics | guide.tishvi.com
 * ============================================================
 *  Wiring:
 *    SG90 Orange (Signal) → Arduino Pin 9  (~PWM)
 *    SG90 Red    (VCC)    → Arduino 5V
 *    SG90 Brown  (GND)    → Arduino GND
 *
 *  What this sketch does:
 *    1. Sweeps the servo from 0° → 180° (one degree at a time)
 *    2. Sweeps back from 180° → 0°
 *    3. Repeats forever
 *
 *  Library required: Servo  (built into Arduino IDE, no install needed)
 * ============================================================
 */

#include <Servo.h>

Servo myServo;            // Create a Servo object

const int SERVO_PIN = 9;  // Signal wire connected to pin 9
int angle = 0;            // Current servo angle

void setup() {
  myServo.attach(SERVO_PIN);
  Serial.begin(9600);
  Serial.println("SG90 Servo Sweep — Tishvi Sample Sketch");
  Serial.println("Servo attached to pin 9. Sweeping 0° to 180°...");
}

void loop() {
  // ── Sweep from 0° to 180° ──────────────────────────────
  for (angle = 0; angle <= 180; angle++) {
    myServo.write(angle);
    Serial.print("Angle: ");
    Serial.print(angle);
    Serial.println("°");
    delay(15);            // 15 ms per degree ≈ ~2.7 s for full sweep
  }

  delay(500);             // Brief pause at 180°

  // ── Sweep back from 180° to 0° ─────────────────────────
  for (angle = 180; angle >= 0; angle--) {
    myServo.write(angle);
    Serial.print("Angle: ");
    Serial.print(angle);
    Serial.println("°");
    delay(15);
  }

  delay(500);             // Brief pause at 0° before repeating
}