SW-420 Vibration Sensor
Low-cost vibration trigger module for impact and tamper demos.
AI Ready Overview
Quick Summary
SW-420 is a vibration sensor commonly used in FYP and embedded projects. It is best for tamper alert and impact trigger, with wiring and testing planned around Arduino, ESP32.
Difficulty
Beginner
Time Required
1-3 days for basic wiring and sample code; 1 week if used inside a complete FYP prototype
Cost
RM3-RM10 module range in Malaysia; full project cost depends on scope.
Components
SW-420, Arduino, ESP32
Overview
What is SW-420?
SW-420 modules detect vibration or impact as a digital trigger. They are useful for simple tamper alerts, crash demos and machine vibration awareness prototypes.
Engineering Reference
Quick Specs
| Operating Voltage | 3.3V / 5V |
|---|---|
| Interface | Digital |
| Difficulty | Beginner |
| Typical Malaysia Price | RM3-RM10 |
| Best For | Tamper alert, Impact trigger |
Real Usage Notes
Suitable / Not Suitable
Suitable for
- ✓ Tamper alert
- ✓ Impact trigger
- ✓ Simple vibration detection
Not suitable for
- ✕ Accurate vibration analysis
- ✕ Bearing fault diagnosis
- ✕ Frequency measurement
Build Planning
Difficulty
SW-420 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: RM3-RM10. 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 3.3V or 5V before wiring.
GND
Common ground with the controller and external supply.
Digital
Main Digital connection used by the module.
IO
Additional signal pins depend on the exact module variant.
Platform Notes
Wiring Guides
SW-420 with Arduino / ESP32
Connect power, ground and the Digital signal lines. Use level shifting when a 5V module connects to a 3.3V controller.
| SW-420 VCC | 5V or module-rated supply |
|---|---|
| SW-420 GND | Controller GND |
| Signal pins | Digital |
Fix Common Problems
Troubleshooting
Troubleshooting
Common Mistakes
FYP Ideas Using SW-420
Related Projects
Compare Options
Alternative Components
Student Questions
FAQ
Is SW-420 good for FYP projects?
Yes, SW-420 is suitable for FYP work when the project matches its limits: Tamper alert and Impact trigger.
What is the most common SW-420 mistake?
Claiming precise vibration measurement