🔧 MG996R – Overview

📌 Key Specs:

• Type: Servo motor
• Rotation Angle: ~180° (can go a bit over)
• Operating Voltage: 4.8V – 7.2V
• Torque:
   - Up to 11 kg/cm at 6V 💪
• Speed: ~0.2 sec/60° at 6V
• Control: PWM (Pulse Width Modulation)

🧃 Wiring:

• Red: VCC (+ power)
• Brown or Black: GND
• Orange or Yellow: Signal (PWM control)

🟦 Controlling MG996R with Arduino

🔌 Wiring:

• Signal (orange) → Arduino D9
• VCC (red) → External 5V–6V power source
• GND (brown) → Connect to both Arduino GND and external power GND

🧾 Arduino Code:

#include <Servo.h>

Servo myServo;

void setup() {
  myServo.attach(9); // Signal pin
}

void loop() {
  myServo.write(0);     // Rotate to 0°
  delay(1000);
  myServo.write(90);    // Rotate to 90°
  delay(1000);
  myServo.write(180);   // Rotate to 180°
  delay(1000);
}

🟩 Controlling MG996R with ESP32

ESP32 needs a special library: ESP32Servo
Install via: Sketch → Include Library → Manage Libraries → Search “ESP32Servo”

🔌 Wiring:

• Signal → Any PWM-capable pin (e.g. GPIO 18)
• VCC → External 5V–6V power source
• GND → Common ground between ESP32 and power supply

🧾 ESP32 Code:

#include <ESP32Servo.h>

Servo myServo;

void setup() {
  myServo.setPeriodHertz(50); // 50Hz for MG996R
  myServo.attach(18);         // Signal pin (e.g. GPIO18)
}

void loop() {
  myServo.write(0);
  delay(1000);
  myServo.write(90);
  delay(1000);
  myServo.write(180);
  delay(1000);
}

⚠️ Pro Tips:

• 🔋 MG996R is powerful — use an external power source (not just from Arduino or ESP32).
• 🧯 Limit movement between 10° to 170° to avoid servo stress at the ends.
• 💥 Be cautious when using with 3.3V logic (ESP32 is okay, but use resistors if needed).