GY-906 MLX90614ESF-BCC Non-Contact Infrared Temperature Sensor Module - 35° FoV

Specifications

• Sensor Chip: Melexis MLX90614ESF-BCC (Gradient Compensated)

• Field of View (FoV): 35° (Narrower/Precision focus)

• Accuracy: ±0.5°C (Standard) / ±0.2°C (Medical range)

• Object Temp Range: -70°C to +380.2°C

• Ambient Temp Range: -40°C to +125°C

• Resolution: 0.02°C

• Interface: I2C (SMBus Compatible)

• Input Voltage: 3.3V - 5V (On-board regulator included)

• ADC: Internal 17-bit high-resolution

• Calibration: Factory calibrated with emissivity of 1.0 (Adjustable via software)

Key Applications & Projects

• Healthcare: Non-contact clinical thermometers and fever screening gates.

• Industrial Maintenance: Monitoring the temperature of moving engine parts or high-voltage lines.

• Smart HVAC: High-precision thermal comfort sensors for climate control.

• Livestock Monitoring: Automated health tracking for animals without stress-inducing contact.

Project Evolution

• Past Projects (Prerequisites): If you’ve used the LM35 or DHT22, you’ll know the frustration of waiting for a sensor to "climb" to the right temperature.

• Feature Upgrade: The GY-906 BCC unlocks instantaneous measurement. Because it is Probots™ Logic-Safe, it integrates directly with high-speed processors like the ESP32 without frying the I/O pins.

• Effort/Requirements: Intermediate. While wiring is simple (4 pins), getting the most out of the narrow 35° FoV requires careful physical alignment and basic I2C coding.

Virtual Technician & Wiring

• VIN: 3.3V to 5V DC

• GND: System Ground

• SCL: I2C Clock (Connect to A5 on Arduino Uno / Pin 22 on ESP32)

• SDA: I2C Data (Connect to A4 on Arduino Uno / Pin 21 on ESP32)

• Note: The module includes 10k pull-up resistors on the I2C lines for out-of-the-box compatibility.

Accessories

• Included: 1x GY-906 MLX90614ESF-BCC Module, 1x 4-pin Straight Header.

• Recommended: Probots™ Instant-R&D: Jumper Wires for solderless prototyping.

Frequently Asked Questions (FAQ)

• What does 'BCC' stand for? 'B' denotes 3V supply, 'C' is for gradient compensation, and 'C' signifies the 35° Field of View.
• Can I measure body temperature with this? Yes, it is factory calibrated for medical-grade accuracy of ±0.2°C.
• How far can I measure from? For the 35° FoV, the optimal range is 2cm to 10cm for a human forehead target.
• Is it compatible with 5V Arduino? Yes, our Probots™ Logic-Safe ⚡ breakout includes a regulator.
• Can it measure through glass? No, IR sensors cannot measure through glass; they will measure the glass temperature instead.
• Does it require a library? Yes, we recommend the Adafruit_MLX90614 library.
• What is the I2C address? The default factory address is 0x5A.
• Can I use multiple sensors on one bus? Yes, the I2C address is software-programmable (up to 127 sensors).
• How fast is the reading? The response time is roughly 0.1 seconds.
• Does it measure ambient temperature too? Yes, it provides both the object temp and the sensor's own ambient temp.
• What happens if the sensor gets hot? The BCC version compensates for internal heat, unlike the BAA version.
• Can it detect fire? Yes, it can detect heat sources up to 380°C.
• Is it affected by sunlight? It has an integrated optical filter to minimize sunlight interference.
• What is the resolution? Extremely high at 0.02°C.
• Does it need calibration? It comes factory calibrated, but emissivity can be adjusted for specific materials (like shiny metal).
• Is it waterproof? No, the TO-39 can is sealed, but the PCB is not.
• Can I use it with a Raspberry Pi? Yes, it works perfectly with the Pi’s 3.3V I2C bus.
• What is 'Gradient Compensation'? It prevents error readings when one side of the sensor is hotter than the other.
• Does the FoV shape change? It is a cone-shaped 35° detection zone.
• Is the pin header soldered? Usually comes with headers loose to give you mounting flexibility.