SG90 Micro Servo Motor
Small positional servo for locks, flaps and simple mechanisms.
AI Ready Overview
Quick Summary
SG90 Servo is a servo motor commonly used in FYP and embedded projects. It is best for small door lock and feeder mechanism, with wiring and testing planned around Arduino, ESP32, Raspberry Pi.
Difficulty
Beginner
Time Required
1-3 days for basic wiring and sample code; 1 week if used inside a complete FYP prototype
Cost
RM5-RM15 module range in Malaysia; full project cost depends on scope.
Components
SG90 Servo, Arduino, ESP32, Raspberry Pi
Overview
What is SG90 Servo?
SG90 is a small hobby servo used for angular movement in doors, feeders, solar trackers and small robotic mechanisms.
Engineering Reference
Quick Specs
| Operating Voltage | 5V |
|---|---|
| Interface | PWM |
| Difficulty | Beginner |
| Typical Malaysia Price | RM5-RM15 |
| Best For | Small door lock, Feeder mechanism |
Real Usage Notes
Suitable / Not Suitable
Suitable for
- ✓ Small door lock
- ✓ Feeder mechanism
- ✓ Solar tracker
Not suitable for
- ✕ Heavy loads
- ✕ Continuous rotation without special servo
- ✕ Direct power from weak GPIO
Build Planning
Difficulty
SG90 Servo is rated Beginner. Plan around 1-3 days for basic wiring and sample code; 1 week if used inside a complete fyp prototypedepending on wiring, libraries, calibration, dashboard/app integration and testing evidence.
Build Planning
Time Required
1-3 days for basic wiring and sample code; 1 week if used inside a complete FYP prototype
Malaysia Price Guidance
Cost
Typical module price range: RM5-RM15. This is component guidance only; a complete FYP cost depends on controller, sensors, casing, display, app/dashboard, documentation and timeline.
Connections
Pinout
VCC
Power input. Check whether the module expects 5V before wiring.
GND
Common ground with the controller and external supply.
PWM
Main PWM connection used by the module.
IO
Additional signal pins depend on the exact module variant.
Platform Notes
Wiring Guides
SG90 Servo with Arduino / ESP32
Connect power, ground and the PWM signal lines. Use level shifting when a 5V module connects to a 3.3V controller.
| SG90 Servo VCC | 5V or module-rated supply |
|---|---|
| SG90 Servo GND | Controller GND |
| Signal pins | PWM |
Fix Common Problems
Troubleshooting
Troubleshooting
Common Mistakes
FYP Ideas Using SG90 Servo
Related Projects
Compare Options
Alternative Components
Student Questions
FAQ
Is SG90 Servo good for FYP projects?
Yes, SG90 Servo is suitable for FYP work when the project matches its limits: Small door lock and Feeder mechanism.
What is the most common SG90 Servo mistake?
Powering servo from controller 5V under load