ET-S22
MLX90614 IR Thermometer
Non-contact infrared temperature sensor
AED 49.00
Out of stockOverview
Non-contact infrared temperature sensor
The ET-S22 is built around the Melexis MLX90614ESF-BAA — thermopile IR, object −70…380°C, ambient −40…125°C, ±0.5°C (0–50°C), 90° FOV. It connects over SMBus/I²C 0x5A (re-programmable in EEPROM) (max 100kHz) and is powered from VIN 3.3–5.5V, onboard LDO (BAA = 3V version).
Two Qwiic / STEMMA QT connectors let you chain it with other boards without soldering, and the 2.54 mm header fits a breadboard.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Non-contact surface temperature
- Motor and bearing monitoring
- Body-temperature experiments
Key features
What makes it different
Sensor
Melexis MLX90614ESF-BAA: thermopile IR, object −70…380°C, ambient −40…125°C, ±0.5°C (0–50°C), 90° FOV
Interface
SMBus/I2C 0x5A (re-programmable in EEPROM), max 100kHz
Supply
VIN 3.3–5.5V, onboard LDO (BAA = 3V version)
Libraries
Adafruit_MLX90614 / CircuitPython, SparkFun MLX90614, ESPHome mlx90614
Qwiic / STEMMA QT
Two JST-SH connectors plus a 2.54 mm header — 3.3 V and 5 V hosts.
Open documentation
Schematic, BOM and layout notes published for every board.
Specifications
Technical specifications
| Sensor | Melexis MLX90614ESF-BAA: thermopile IR, object −70…380°C, ambient −40…125°C, ±0.5°C (0–50°C), 90° FOV |
|---|---|
| Interface | SMBus/I2C 0x5A (re-programmable in EEPROM), max 100kHz |
| Supply | VIN 3.3–5.5V, onboard LDO (BAA = 3V version) |
| Size | 25.4 × 17.8 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 2 × Qwiic / STEMMA QT (JST SH 4-pin) · 5-pin 2.54 mm header |
| Main IC | MLX90614ESF-BAA-000-TU (LCSC C490604) |
| Revision | Rev B |
| Libraries | Adafruit_MLX90614 / CircuitPython, SparkFun MLX90614, ESPHome mlx90614 |
|---|
| JP1 (default Closed) | Cut to turn off the LED |
|---|---|
| JP2 (default Closed) | Cut to remove the host-side I2C pull-ups |
Performance
Field of view
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 3.3–5.5V |
| 2 | 3V3 | Power | LDO output |
| 3 | GND | Ground | Ground |
| 4 | SCL | I²C | I²C clock |
| 5 | SDA | I²C | I²C data |
Qwiic / STEMMA QT pins: GND, VIN, SDA, SCL (same on both connectors). I²C pull-ups (10 kΩ) are on the board; cut JP2 to remove them.
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-S22 MLX90614 IR Thermometer (assembled)
- 1 × 5-pin 2.54 mm male header, unsoldered
Getting started
- Plug in a Qwiic / STEMMA QT cable, or solder the header and wire VIN, GND, SDA and SCL
- Libraries: Adafruit_MLX90614 / CircuitPython, SparkFun MLX90614, ESPHome
mlx90614 - Run an I²C scanner to confirm the address: 0x5A
Compare
Which thermal sensor?
| MLX90614 IR Thermometer (this board)This board | ET-S36 AMG8833 Grid-EYE Thermal Sensor | ET-S35 MLX90640 Thermal Camera (110°) | |
|---|---|---|---|
| What it does | Non-contact infrared temperature sensor | 8×8 thermal array for presence detection | 32×24 pixel thermal camera over I²C |
| Interface | SMBus/I²C 0x5A (re-programmable in EEPROM), max… | I²C 0x68 / 0x69 (JP3), 400kHz | I²C 0x33 (EEPROM-programmable), up to 1MHz |
| Best for | Non-contact surface temperature | Presence detection without a camera | Thermal imaging for electronics |
| Price | 49 AED | 139 AED | 229 AED |
Downloads
Documents and design files
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