DS18B20 Waterproof Temperature Sensor
Waterproof digital temperature probe for tanks, aquaculture and outdoor builds.
AI Ready Overview
Quick Summary
DS18B20 is a temperature sensor commonly used in FYP and embedded projects. It is best for water temperature and outdoor probe, 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-RM18 module range in Malaysia; full project cost depends on scope.
Components
DS18B20, Arduino, ESP32, Raspberry Pi
Overview
What is DS18B20?
DS18B20 waterproof probes measure temperature over a 1-Wire digital bus. They are commonly used in water tanks, aquaculture, incubators and outdoor monitoring projects.
Engineering Reference
Quick Specs
| Operating Voltage | 3.0V-5.5V |
|---|---|
| Interface | 1-Wire |
| Difficulty | Beginner |
| Typical Malaysia Price | RM5-RM18 |
| Best For | Water temperature, Outdoor probe |
Real Usage Notes
Suitable / Not Suitable
Suitable for
- ✓ Water temperature
- ✓ Outdoor probe
- ✓ Aquaculture monitoring
Not suitable for
- ✕ Humidity sensing
- ✕ Fast thermal response
- ✕ High-temperature ovens
Build Planning
Difficulty
DS18B20 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-RM18. 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 3.0V-5.5V before wiring.
GND
Common ground with the controller and external supply.
1-Wire
Main 1-Wire connection used by the module.
IO
Additional signal pins depend on the exact module variant.
Platform Notes
Wiring Guides
DS18B20 with Arduino / ESP32
Connect power, ground and the 1-Wire signal lines. Use level shifting when a 5V module connects to a 3.3V controller.
| DS18B20 VCC | 3.0V-5.5V |
|---|---|
| DS18B20 GND | Controller GND |
| Signal pins | 1-Wire |
Fix Common Problems
Troubleshooting
Troubleshooting
Common Mistakes
FYP Ideas Using DS18B20
Related Projects
Compare Options
Alternative Components
Student Questions
FAQ
Is DS18B20 good for FYP projects?
Yes, DS18B20 is suitable for FYP work when the project matches its limits: Water temperature and Outdoor probe.
What is the most common DS18B20 mistake?
No pull-up resistor