BinKey

beffkkip-sg90-micro-servos

3 min read

Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

Beffkkip SG90 9g Micro Servos

Details

  • Location: Cabinet 4, Bin 19
  • Category: Servo Motors
  • Brand: Beffkkip
  • Part Number: SG90-9G
  • Package: Various pack sizes
  • Quantity: ~8 servos
  • Status: Available
  • Price Range: 18.99 (10pcs)
  • Product URL: https://a.co/d/c0fgu7o

Description

High-quality Beffkkip SG90 9g micro servo motors, ideal for RC aircraft, robotics projects, and Arduino applications. These compact servos provide reliable positioning control with 180-degree rotation range and are compatible with standard PWM control signals. Perfect for hobbyist and educational projects requiring precise angular positioning.

Image

Beffkkip SG90 Micro Servos

Specifications

Servo Characteristics

  • Model: SG90 (industry standard)
  • Weight: 9 grams
  • Dimensions: 23 x 12.2 x 29mm
  • Gear Type: Plastic gears
  • Rotation Range: 180 degrees (±90 degrees)
  • Operating Speed: 0.1 sec/60° (4.8V no load), 0.08 sec/60° (6V)

Electrical Specifications

  • Operating Voltage: 4.8V - 6.0V DC
  • Current Draw: 100mA (no load), 220mA (stall)
  • Control Signal: PWM (Pulse Width Modulation)
  • Pulse Width: 1ms-2ms (20ms period)
  • Neutral Position: 1.5ms pulse width
  • Dead Band: 7μs

Mechanical Properties

  • Torque: 1.8 kg⋅cm (4.8V), 2.2 kg⋅cm (6V)
  • Gear Ratio: Approximately 1:270
  • Bearing Type: Plastic bushings
  • Output Shaft: 20-tooth spline
  • Temperature Range: 0°C to 55°C

Pinout/Connection Information

Wire Configuration

  • Red Wire: VCC (Power) - Connect to 4.8V-6V
  • Brown/Black Wire: Ground - Connect to system ground
  • Orange/Yellow Wire: Signal - Connect to PWM output pin

PWM Control Signals

Position Control:
0° (Full CCW)    = 1.0ms pulse width
90° (Center)     = 1.5ms pulse width  
180° (Full CW)   = 2.0ms pulse width

Pulse Period: 20ms (50Hz)
Voltage Levels: 0V (Low), 3.3V/5V (High)

Arduino Connection Example

Servo Pin    Arduino Pin
VCC     -->  5V
GND     -->  GND
Signal  -->  Digital Pin (e.g., Pin 9)

Applications

RC Aircraft

  • Control Surfaces: Primary and secondary flight controls
  • Landing Gear: Retractable gear mechanisms
  • Payload Doors: Bomb bay doors, camera covers
  • Throttle Control: Engine throttle linkages

Robotics Projects

  • Joint Actuation: Robot arm and leg joints
  • Gripper Control: End-effector positioning
  • Sensor Positioning: Pan/tilt sensor mounts
  • Walking Mechanisms: Bipedal and quadrupedal robots

Arduino Projects

  • Automated Systems: Door locks, window openers
  • Camera Systems: Security camera positioning
  • Educational Projects: STEM learning platforms
  • Art Installations: Kinetic art and sculptures

Notes

The SG90 servo is an industry-standard micro servo that offers excellent value for hobbyist applications. While the plastic gears limit heavy-duty use, they provide adequate performance for most RC aircraft and robotics projects.

Quality Considerations: Beffkkip servos offer good quality at competitive prices. The plastic gear train is suitable for light to moderate loads but may wear under continuous heavy use.

Power Management: When using multiple servos, consider the total current draw and use an appropriate power supply. The 220mA stall current can add up quickly with multiple servos.

Graph View

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