DHT11 Temperature Humidity Sensor
Very low-cost temperature and humidity sensor for beginner demos.
AI Ready Overview
Quick Summary
DHT11 is a temperature humidity sensor commonly used in FYP and embedded projects. It is best for beginner weather demo and simple classroom monitoring, 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
RM3-RM8 module range in Malaysia; full project cost depends on scope.
Components
DHT11, Arduino, ESP32, Raspberry Pi
Overview
What is DHT11?
DHT11 is a basic digital temperature and humidity sensor. It is cheap and common in beginner kits, but less accurate and slower than DHT22 or BME280.
Engineering Reference
Quick Specs
| Operating Voltage | 3.3V / 5V |
|---|---|
| Interface | Digital |
| Difficulty | Beginner |
| Typical Malaysia Price | RM3-RM8 |
| Best For | Beginner weather demo, Simple classroom monitoring |
Real Usage Notes
Suitable / Not Suitable
Suitable for
- ✓ Beginner weather demo
- ✓ Simple classroom monitoring
- ✓ Low-cost practice project
Not suitable for
- ✕ Accurate environmental logging
- ✕ Fast readings
- ✕ Professional climate monitoring
Build Planning
Difficulty
DHT11 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-RM8. This is component guidance only; a complete FYP cost depends on controller, sensors, casing, display, app/dashboard, documentation and timeline.
Connections
Connection overview
Power
Use only a supply supported by the exact board or module variant. Common listings for this part mention 3.3V or 5V.
Ground
Connect a common ground between the controller, module and any external supply.
Primary interface
Plan for Digital; confirm the exact terminal names in the manufacturer documentation.
Variant-specific connections
Connector names and optional pins can differ between breakout-board revisions.
Platform Notes
Wiring Guides
DHT11 with Arduino / ESP32
This is a planning overview, not a board-specific pin map. Confirm the exact module revision, supply limits and Digital terminals in its datasheet before wiring. Use suitable level shifting when logic voltages differ.
| Power | Confirm against the exact board; listed variants commonly use 3.3V / 5V |
|---|---|
| Ground | Common ground with the controller |
| Interface | Digital (exact pins vary by module) |
Fix Common Problems
Troubleshooting
Troubleshooting
Common Mistakes
FYP Ideas Using DHT11
Related Projects
Compare Options
Alternative Components
Student Questions
FAQ
Is DHT11 good for FYP projects?
Yes, DHT11 is suitable for FYP work when the project matches its limits: Beginner weather demo and Simple classroom monitoring.
What is the most common DHT11 mistake?
Expecting DHT22 accuracy