Micro Servo 9G (SG90) Documentation

Introduction

The Micro Servo 9G (SG90) by AZDelivery is a compact and lightweight servo motor widely used in the world of hobby electronics and robotics. Its small size and affordability make it an ideal choice for applications such as radio-controlled models, small robotics projects, and any application where precise movement and control of small components are required.

Common Applications and Use Cases

• Radio-controlled vehicles (cars, airplanes, boats)
• Robotic arms and manipulators
• Camera pan/tilt systems
• Small-scale automation projects

Technical Specifications

Key Technical Details

• Operating Voltage: 4.8V to 6.0V
• Stall Torque: 1.8 kg-cm (4.8V), 2.2 kg-cm (6.0V)
• Operating Speed: 0.12 sec/60° (4.8V), 0.10 sec/60° (6.0V)
• Temperature Range: -30°C to +60°C
• Weight: 9g
• Dimensions: 22.2 x 11.8 x 31 mm

Pin Configuration and Descriptions

Usage Instructions

How to Use the Component in a Circuit

1. Power Supply: Connect the red wire to a power supply that is within the operating voltage range (4.8V to 6.0V).
2. Ground: Connect the brown wire to the ground of your power supply and microcontroller.
3. Control Signal: Connect the orange wire to a PWM-capable pin on your microcontroller.

Important Considerations and Best Practices

• Ensure that the power supply is stable and within the specified voltage range to prevent damage to the servo.
• Do not exceed the servo's torque capabilities, as this may cause permanent damage.
• When mounting the servo, ensure that it is securely fastened to prevent any unintended movement.
• Avoid placing the servo under continuous load for extended periods to prevent overheating and potential failure.

Example Code for Arduino UNO

#include <Servo.h>

Servo myservo;  // create servo object to control a servo

void setup() {
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
}

void loop() {
  myservo.write(90);  // sets the servo position according to the scaled value
  delay(1000);        // waits for the servo to reach the position
  myservo.write(0);   // sets the servo back to the starting position
  delay(1000);        // waits for the servo to reach the position
}

Troubleshooting and FAQs

Common Issues Users Might Face

• Servo not responding: Ensure that all connections are secure and the power supply is within the operating voltage range.
• Erratic movements: Check for any signal interference or inconsistencies in the control signal.
• Overheating: Make sure the servo is not under excessive load and is being used within its torque specifications.

Solutions and Tips for Troubleshooting

• Double-check wiring, especially the control signal wire, to ensure it is connected to a PWM-capable pin.
• Use a separate power supply for the servo if the microcontroller cannot provide sufficient current.
• Implement a "sweep" test code to ensure the servo is functioning correctly across its range of motion.

FAQs

Q: Can I control the Micro Servo 9G with a Raspberry Pi? A: Yes, you can control the servo using the Raspberry Pi's GPIO pins, but you will need to ensure proper logic level conversion and power supply.

Q: How many servos can I connect to an Arduino UNO? A: The Arduino UNO can control as many servos as there are PWM-capable pins available, but power limitations may require an external power supply when using multiple servos.

Q: What is the lifespan of the Micro Servo 9G? A: The lifespan can vary based on usage, but with proper care and not exceeding its specifications, it can last for many operational hours.