MLX90614 IR Non-contact Thermometer

Infrared thermometer for non-contact surface temperature measurement over I2C. Factory calibrated.

Sensor Melexis MLX90614 radiation i2c Draft

This entry is draft and has not been confirmed against physical hardware. A conforming tool will refuse to provision it. The datasheet is the authority, not this page.

Specifications

Protocol i2c
Sensor type radiation
Manufacturer Melexis
Model number MLX90614
Datasheet url https://www.melexis.com/en/documents/documentation/datasheets/datasheet-mlx90614
Read interval seconds 10

Readings

SlugDevice classUnitRange
ambient-temperature temperature °C -40 to 125
object-temperature temperature °C -70 to 380

Wiring

PinRequiredNotes
sda Yes
scl Yes

Supply: 3.3V

Failure modes

  • Requires I2C repeated start. The Raspberry Pi I2C driver does not issue it by default and the sensor returns errors until combined transfers are enabled.
  • Measures whatever fills its field of view, which widens with distance. An object temperature reading is only meaningful when the target fills the cone.
  • Ambient and object channels drift together with the sensor body temperature. Allow it to reach thermal equilibrium before trusting readings.

Entry

Keymlx90614
StatusDraft
Revision1
Registry0.3.0
Datasheet Entry on GitHub JSON for agents

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