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Mini Servo Motor SG90 for Arduino RC Planes 9g 9 gram

Rating:
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Servo Motors
₹119.00 ₹ 100.85 + 18.15 GST
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PRO692

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The industry-standard micro servo for lightweight mechatronics. ideal for RC airplanes, helicopter swashplates, and Arduino robotic arms.

Why just blink an LED when you can make things move? The SG90 Mini Servo Motor (9g) is the undisputed "Hello World" of robotics, serving as the critical bridge between software code and physical action. If you are taking your first steps into mechatronics, this actuator transforms your static microcontroller projects into dynamic machines. Unlike continuous DC motors that spin wildly, the SG90 offers precise position control, allowing you to instruct the shaft to move to an exact angle (0 to 180 degrees) and hold it there with surprising holding torque for its diminutive size.

Versatility Across Land, Air, and Lab Designed originally for the demanding world of RC aeromodelling, this 9-gram powerhouse is standard issue for controlling ailerons, elevators, and rudders on park flyers and foam board planes. However, its utility extends far beyond flight; it is the primary muscle for miniature hexapod walkers, robotic grippers, and pan-tilt camera mounts. Its universal compatibility means it interfaces seamlessly with standard libraries on Arduino, ESP32, Raspberry Pi, and virtually any flight controller without requiring complex driver boards.

The Quality Difference: No More Jitter Not all blue servos are created equal. The budget servo market is often plagued by "jitter"—where the motor vibrates uncontrollably due to poor potentiometers—and brittle gears that strip under minor loads. We distinguish our stock by sourcing from factory lines that prioritize nylon gear density and signal stability. Probots Lab Verified™ ????, we test random samples from every batch to ensure they meet the 1.6kg-cm stall torque rating and maintain position without the annoying buzzing common in reject-grade alternatives.

Built for Reliability and Safety While this is a hobby-grade servo, we treat its handling with industrial care. The internal geartrain is lubricated for smooth operation, and the connector is a standard "S" type (JR/Futaba) that fits 2.54mm headers. To ensure your project succeeds, we emphasize Probots Logic-Safe™  practices: while the signal line is 3.3V logic compatible, we strongly advise powering the VCC line from a dedicated source rather than your microcontroller's 5V pin to prevent brownouts. Your servos arrive protected by Probots Secure-Transit™  packaging, guaranteeing straight pins and intact mounting tabs.

 

Specifications:

  • Operating Voltage: 4.8V – 6.0V DC
  • Stall Torque: 1.6 kg-cm (at 4.8V)
  • Operating Speed: 0.12 sec/60 degrees (at 4.8V)
  • Rotation Angle: 180 Degrees (90° in each direction)
  • Gear Material: Nylon (Industrial Strength Plastic)
  • Weight: 9 grams
  • Dead Band Width: 7 usec
  • Dimensions: 22.2 x 11.8 x 31 mm
  • Connector Type: Female JR/Futaba (Compatible with standard 2.54mm headers)

Applications:

  • RC Aeromodelling: Perfect for controlling ailerons, elevators, and rudders on lightweight park flyers and foam board planes.
  • Miniature Robotics: Essential for building hexapod walkers, robotic grippers, and pan-tilt camera mounts.
  • IoT Switches: Low-cost solution for physically toggling light switches or pressing buttons in home automation projects.
  • Animatronics: Great for eye movements and small facial features in props.

Project Evolution

  • Prerequisites: If you have mastered digitalWrite(LED, HIGH), you are ready for this. This is the logical next step after learning to blink an LED.
  • Feature Upgrade: This servo unlocks the ability to interact with the physical world. Instead of just displaying data, your project can now open a latch, steer a vehicle, or wave a flag.
  • Effort Level: Beginner. Requires only 3 wires and the standard <Servo.h> library.
  • Minimum Hardware: An Arduino Uno, ESP32 (3.3V safe), or any PWM source. Note: For heavy loads, use an external 5V power supply.

Virtual Technician: Wiring & Safety

Pin Mapping

  • Brown / Black: Ground (GND)
  • Red: VCC (4.8V - 6V)
  • Orange / White: Signal (PWM Pin)

Probots Logic-Safe™ ⚡ Warning: While the SG90 can run on 4.8V, do not power multiple servos directly from your Arduino's 5V pin. The current spike during startup can cause your microcontroller to reset (brownout). We highly recommend using a dedicated power supply or a Servo Driver Shield for stable operation.

Package Includes: 1 X SG90 Mini Servo Motor 9g - 180 Degree

 

Frequently Asked Questions (Technical SEO)

  1. What is the maximum weight the SG90 servo can lift?
    It has a stall torque of 1.6kg-cm, meaning it can hold 1.6kg at a distance of 1cm from the shaft, or 160g at 10cm.
  2. Can I control the SG90 with a Raspberry Pi?
    Yes, but the Raspberry Pi GPIO is 3.3V. While it often works, we recommend a level shifter or a dedicated PWM driver like the PCA9685 for stability.
  3. Does this servo rotate 360 degrees?
    No, this is the standard 180-degree version. For continuous rotation, look for the SG90-360 variant.
  4. Why is my servo vibrating or jittering?
    Jitter is usually caused by an unstable power supply. Try using an external battery pack instead of USB power.
  5. Are the gears made of metal or plastic?
    The SG90 uses nylon (plastic) gears. For metal gears, check the MG90S model.
  6. What library do I need for Arduino?
    Use the standard <Servo.h> library included in the Arduino IDE. No external downloads are required.
  7. Is this servo waterproof?
    No, the SG90 is not waterproof. Water ingress will damage the internal potentiometer and circuit.
  8. Can I use this for a 1/10 scale RC car steering?
    No, it is too weak for 1/10 scale cars. It is designed for 1/18 scale or smaller, and aircraft surfaces.
  9. What is the PWM frequency for this motor?
    It expects a standard 50Hz PWM signal.
  10. How do I center the servo before mounting?
    Run code to set the servo to 90 degrees (center) before attaching the horn to ensure equal travel in both directions.
  11. What is the cable length?
    The integrated 3-wire cable is approximately 25cm long.
  12. Can I drive this with a 9V battery?
    No! 9V will destroy the motor. The maximum safe voltage is 6V.
  13. Does it come with mounting hardware?
    Yes, it includes a set of plastic horns (arms) and mounting screws.
  14. Why is my servo getting hot?
    If the load is too heavy or the mechanism is jammed, the motor draws stall current and heats up. Remove power immediately.
  15. What is the pulse width range?
    Typically 500µs (0°) to 2400µs (180°), though exact values can vary slightly by batch.
  16. Can I use this with an ESP8266/NodeMCU?
    Yes, the signal pin works with 3.3V logic, but power (VCC) must come from a 5V source (USB/Vin).
  17. Is this compatible with PCA9685 drivers?
    Yes, the PCA9685 is the ideal driver for controlling multiple SG90 servos simultaneously.
  18. How accurate is the positioning?
    It has a dead band of ~7µs. It is accurate enough for basic robotics but not precision industrial tasks.
  19. Can I modify it for continuous rotation?
    It is possible by removing the physical stop and potentiometer lock, but buying a pre-made 360° version is more reliable.
  20. What is the difference between SG90 and MG90S?
    SG90 has plastic gears and is lighter/cheaper. MG90S has metal gears and provides higher torque and durability
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How to Order?

Probots sells every Electronics Part for your next Project. You can order 10,000+ Electronic Parts Online - Arduino, Raspberry Pi, NodeMCU Development Boards, Sensors, Motors, Motor Drivers, SMPS, Plastic Enclosures etc in India directly on probots.co.in

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We delivery electronics components and parts throughout India using standard couriers like Bluedart, Delhivery & India Post.

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Probots sells every Electronics Part for your next Project. You can order 10,000+ Electronic Parts Online - Arduino, Raspberry Pi, NodeMCU Development Boards, Sensors, Motors, Motor Drivers, SMPS, Plastic Enclosures etc in India directly on probots.co.in

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