The SG90 9g Micro Servo Motor is one of the most popular mini servos for Arduino and RC projects thanks to its compact size, low cost, and reliable 180° positional control. It uses a standard PWM servo signal to move to a specific angle and hold position, making it ideal for robot arms, steering mechanisms, pan/tilt camera mounts, small animatronics, and DIY automation.
With its lightweight 9g form factor, the SG90 fits easily into tight spaces while still delivering smooth movement for small linkages and mechanisms. It’s beginner-friendly, widely supported by Arduino libraries, and perfect for STEM learning kits and rapid prototypes.
SG90 is a positional servo that moves to the angle commanded by the PWM pulse width:
You can control it using Arduino Servo library, ESP32 PWM/servo libraries, or RC receivers.
Common color coding:
| Item | Typical Value |
|---|---|
| Model | SG90 Micro Servo |
| Weight | ~9g |
| Rotation | Up to ~180° (positional control) |
| Voltage | 4.8V–6.0V DC |
| Control | PWM (typical ~50Hz) |
| Connector | 3-pin RC servo plug |
Note: Actual angle range and torque can vary depending on the servo batch and load.
Honest takes from buyers who built with this part.
Ask anything — the team and other customers will reply.
