MLX90614 Infrared Temperature Sensor

Non-contact temperature sensor for object surface measurement.

IR Temperature SensorRM25-RM70Intermediate

Arduino ✓ESP32 ✓Raspberry Pi ✓

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MLX90614 Infrared Temperature Sensor electronics module illustration

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

Connection overview

Module revisions can use different connector names and electrical limits. Treat this as a planning overview and verify the exact board marking, manufacturer datasheet and seller documentation before wiring.

Power

Use only a supply supported by the exact board or module variant. Common listings for this part mention 3.3V or 5V module variants.

Ground

Connect a common ground between the controller, module and any external supply.

Primary interface

Plan for I2C; 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

MLX90614 with Arduino / ESP32

This is a planning overview, not a board-specific pin map. Confirm the exact module revision, supply limits and I2C 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 module variants
Ground	Common ground with the controller
Interface	I2C (exact pins vary by module)

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