Overview

Melexis' MLX90614ESF-AAA is an infrared thermometer designed for non-contact temperature sensing. An internal 17-bit ADC and a powerful DSP contribute to the MLX90614's high accuracy and resolution. It has a huge number of applications including body temperature measurment and movement detection.

The MLX90614 provides two methods of output: PWM and SMBus (i.e. TWI, I2C). The 10-bit PWM output provides a resolution of 0.14ˇăC, while the TWI interface has a resolution of 0.02ˇăC. The MLX90614 is factory calibrated in wide temperature ranges: -40 to 85ˇăC for the ambient temperature and -70 to 380ˇăC for the object temperature. The measured value is the average temperature of all objects in the Field Of View of the sensor. The MLX90614 offers a standard accuracy of 0.5ˇăC around room temperatures.

Features

• Factory calibrated
• -40 to +85ˇăC for sensor temperature
• -70 to +380ˇăC for object temperature
• SMBus compatible digital interface
• Customizable PWM output for continuous reading
• High accuracy of 0.5ˇăC over wide temperature range (0 to +50ˇăC for both Ta and To)
• Measurement resolution of 0.02ˇăC
• 4.5V~5V power supply

We designed this compact breakout board for MLX90614. On the back side the red LED would indicate power connection.

Example

Connect this module with Arduino

Visit our github page to download the library. Upload the code to Arduino.

Open Serial Monior, set the baud rate at 9600.

Put my hand before the sensor and the temperature went up to around 35.00 Celcius. It is really accurate.

Download

• library for Arduino
• Assemble instruction

Product list

We offer more resisters and capacitors in the package in case you need to try more than once while soldering.