MLX90614 Infrared Temperature Sensor
Non-contact temperature sensor for object surface measurement.
AI Ready Overview
Quick Summary
MLX90614 is a ir temperature sensor commonly used in FYP and embedded projects. It is best for non-contact temperature and surface temperature logging, with wiring and testing planned around Arduino, ESP32, Raspberry Pi.
Difficulty
Intermediate
Time Required
1-2 weeks for wiring, basic code, platform integration and repeated test readings
Cost
RM25-RM70 module range in Malaysia; full project cost depends on scope.
Components
MLX90614, Arduino, ESP32, Raspberry Pi
Overview
What is MLX90614?
MLX90614 measures object temperature without contact using infrared sensing. It is useful for surface temperature demos and safety screening prototypes, but depends strongly on target material and distance.
Engineering Reference
Quick Specs
| Operating Voltage | 3.3V / 5V module variants |
|---|---|
| Interface | I2C |
| Difficulty | Intermediate |
| Typical Malaysia Price | RM25-RM70 |
| Best For | Non-contact temperature, Surface temperature logging |
Real Usage Notes
Suitable / Not Suitable
Suitable for
- ✓ Non-contact temperature
- ✓ Surface temperature logging
- ✓ Demo screening prototype
Not suitable for
- ✕ Medical diagnosis
- ✕ Unknown emissivity accuracy
- ✕ Long-distance thermal imaging
Build Planning
Difficulty
MLX90614 is rated Intermediate. Plan around 1-2 weeks for wiring, basic code, platform integration and repeated test readingsdepending on wiring, libraries, calibration, dashboard/app integration and testing evidence.
Build Planning
Time Required
1-2 weeks for wiring, basic code, platform integration and repeated test readings
Malaysia Price Guidance
Cost
Typical module price range: RM25-RM70. 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 module variants before wiring.
GND
Common ground with the controller and external supply.
I2C
Main I2C connection used by the module.
IO
Additional signal pins depend on the exact module variant.
Platform Notes
Wiring Guides
MLX90614 with Arduino / ESP32
Connect power, ground and the I2C signal lines. Use level shifting when a 5V module connects to a 3.3V controller.
| MLX90614 VCC | 3.3V |
|---|---|
| MLX90614 GND | Controller GND |
| Signal pins | I2C |
Fix Common Problems
Troubleshooting
Troubleshooting
Common Mistakes
FYP Ideas Using MLX90614
Related Projects
Compare Options
Alternative Components
Student Questions
FAQ
Is MLX90614 good for FYP projects?
Yes, MLX90614 is suitable for FYP work when the project matches its limits: Non-contact temperature and Surface temperature logging.
What is the most common MLX90614 mistake?
Claiming medical accuracy