TowerPro SG90 Servo

Tower Pro SG90 9gr Micro Servo Motor

PWM Robot Arm Gripper RC Airplane Glider Pan Tilt Camera Walking Robot Smart Trash Can Automatic Lid Solar Tracker Model

     The SG90 is a 9gr plastic gear micro servo motor. It operates between 4.8V - 6V; at 4.8V it gives about 1.6kg/cm - 1.8kg/cm stall torque and turns 60 degrees in about 0.10sec - 0.12sec. Its shaft moves to the requested angle up to 180 degrees and holds that position under light load. Because of its weight it is also known in the RC world as the "9gr servo"; it is of the SG90 type first produced by Tower Pro.

     Its blue translucent case measures 22.5mm x 12mm, and its height including the shaft is 30mm. The mounting tabs on both sides of the case have 2 screw holes spaced 27.5mm apart; the servo is screwed to the body through these holes. The 3 pin JR / Futaba compatible connector at the end of the approx. 25cm cable plugs directly into RC receivers and servo driver boards. The package includes 3 servo horns and their screws.

     Because its gears are plastic it is light and economical; it is suitable for light loads. It is preferred for jobs needing little torque such as control surfaces of RC airplanes and gliders, small robot arms, camera pan-tilt mechanisms, smart trash can lids and small lid and latch mechanisms. Where there are shocks and sudden loads, the metal gear MG90S of the same size is more durable.

Key features:

     Very light: With a weight of 9gr it adds little load to light model airplanes, gliders and small robot joints; it fits micro servo mounts.

     Holds its position: The position potentiometer inside the servo moves the shaft to the given angle and holds it there; at 4.8V it gives about 1.6kg/cm - 1.8kg/cm stall torque.

     Ready connection: The 3 wire (brown GND, red +, orange signal) JR / Futaba compatible connector plugs directly into an RC receiver, servo driver board or a control board with PWM output; no soldering needed.

     Easy mounting: The tabs on both sides have 2 screw holes spaced 27.5mm apart; the suitable one of the 3 different servo horns included in the package is fitted to the shaft.

     Plastic gear, economical: The plastic gear train makes the servo light and economical; it is suitable for mechanisms with light loads that use many servos.

Features:

• Product type:    Plastic gear micro servo motor (analog)
• Model: SG90
• Operating voltage: 4.8V - 6.0V
• Stall torque (4.8V): about 1.6kg/cm - 1.8kg/cm
• Operating speed (4.8V, no load): about 0.10sec - 0.12sec / 60 degrees
• Rotation angle: up to 180 degrees (about 90 degrees each direction)
• Control signal: PWM, 50Hz (20ms period), center position 1.5ms
• Gear train: Plastic gears
• Shaft: Splined output shaft, servo horn fixed with an M2 screw
• Mounting: 2 pcs 2mm screw holes in the tabs, 27.5mm spacing
• Compatible boards: Arduino, ESP32, ESP8266, Raspberry Pi, STM32 and all servo driver boards with PWM output
• Operating temperature: 0°C - 55°C
• Material: Blue translucent plastic case, plastic gears
• Color: Blue
• Wire colors: Brown GND, red supply (+), orange signal
• Cable length and connector: about 25cm cable, 3 pin female JR / Futaba compatible connector
• Dimensions: 22.5mm x 12mm x 30mm (height including shaft; length with tabs 32.5mm)
• Weight: 9gr

Usage information:

• Connect the brown wire to GND, the red wire to the 5V supply and the orange wire to the PWM output of the control board. If you use a separate supply, join the supply GND with the GND of the control board.
• The control signal is 50Hz; a 1.5ms pulse is the center position (about 90 degrees). The pulse widths for the end positions vary slightly from servo to servo; set the end values so that the servo does not hit its mechanical limit and buzz.
• Before fitting the servo horn, bring the servo to the center position; center the horn in this position and fix it with its small screw.

Application areas:

•  Small robot arm and gripper joints
•  Control surfaces of remote controlled (RC) airplanes and gliders
•  Camera pan-tilt (horizontal-vertical positioning) mechanisms
•  Four-legged and humanoid walking robots
•  Smart trash can lid
•  Automatic lid, latch and small lock mechanisms
•  Solar tracking and sensor positioning mechanisms
•  Moving models and figures
•  Ultrasonic distance sensor scanning mechanisms
   

Points to consider:

•  The gears are plastic. Do not turn the servo shaft left and right by hand and do not apply shocks or sudden loads that force the shaft; the gears can break. Use the metal gear MG90S where there are shocks and high loads.
•  If you use more than one servo, power them not from the 5V pin of the control board but from a separate 5V source with enough current; the servo current rises while moving and under load.
•  A servo forced beyond its 180 degree mechanical limit or left stalled for a long time heats up and can be damaged.
•  The operating voltage range is 4.8V - 6.0V. A higher supply shortens the servo life and can damage it.
•  This product is an angular position servo and does not rotate continuously 360 degrees; a continuous rotation (360 degree) servo is needed to drive a wheel.

Package contents:

•  1 Pcs SG90 Servo Motor
•  1 Pcs 25cm cable and JR connector ( Assembled )
•  3 Pcs plastic servo horns
•  3 Pcs screws