Object temperature
—
Ambient
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Connect the Melexis IO board with an MLX90614 on SMBus.
Object
Ambient
—
Device
- Status
- Disconnected
- Zones
- —
- Object 2
- —
- Emissivity
- —
- Sample
- —
7-bit, 0x08 to 0x77. Detect passes the address it found; the last one used here is
remembered. Applies on the next connect.
Emissivity
Applied inside the sensor, not here: it lives in EEPROM cell 0x04 and the readings
already account for it. Changing it also rescales a calibration cell and, on newer
parts, needs an unlocking key — so this page reads it and leaves it alone.
Latest readings
| Time | Object | Ambient |
|---|---|---|
| No samples yet. | ||
SCPI log
The part linearises and compensates on chip, so there is nothing to port: the temperatures come straight out of RAM at 0.02 °C per count. It speaks SMBus rather than plain I2C — every transaction carries a PEC checksum, which this page verifies, and the bus has to run at 100 kHz or slower. Dual-zone variants report a second object temperature; a single-zone part answers that cell with its error flag set, which is how the page tells them apart.