The MG90S is a metal gear micro servo, a tougher, longer-lasting upgrade over the plastic-gear SG90. It delivers around 1.8kg·cm of torque and runs straight off an Arduino, ESP32 or RC receiver. Pick 180° for precise positional control, or 360° for continuous rotation (selected above).
- Metal gears for durability and torque
- Around 1.8kg·cm torque (more at 6V)
- Lightweight ~13.4g body
- Runs on 4.8–6V
- Standard 3-wire PWM control
- Choose 180° positional or 360° continuous
- Servo horns and screws included
- Works with Arduino, ESP32 and RC receivers
Specifications
What's in the box
Includes a set of servo horns/arms and mounting screws.
Great for
Wiring & getting started
- Connect power
Brown wire to GND, red wire to a 4.8–6V supply.
- Connect signal
Orange wire to any PWM-capable pin on your Arduino or ESP32.
- Use the Servo library
On Arduino, attach the pin and use write() for an angle, or writeMicroseconds() for fine control.
- 360° note
On the continuous version the signal sets speed and direction rather than a fixed angle.
Common questions
What's the difference between 180° and 360°?
180° is a standard positional servo for precise angles (arms, steering, pan-tilt). 360° is continuous rotation, where the signal controls speed and direction instead of a set angle, ideal for wheels and continuous motion.
Can I power it from the Arduino 5V pin?
For a single light-load servo, yes. For multiple servos or anything under load, use a separate 4.8–6V supply with a common ground to avoid voltage dips that reset your board.
How is it better than an SG90?
The MG90S uses metal gears instead of plastic, so it handles more torque and lasts longer under repeated or loaded use, while keeping the same compact size and mounting.
Are servo horns included?
Yes. Each servo comes with a set of horns/arms and mounting screws.
What voltage does it run on?
4.8 to 6V. Torque and speed are a little higher at 6V than at 4.8V.
Good to know: For multiple or loaded servos, power them from a separate 4.8–6V supply with a common ground to your controller. Every servo is checked before it ships from our Te Awamutu stock.