ET-S35
MLX90640 Thermal Camera (110°)
32×24 pixel thermal camera over I²C
AED 229.00
Out of stockOverview
32×24 pixel thermal camera over I²C
The ET-S35 is built around the Melexis MLX90640ESF-BAA — 768-pixel (32×24) thermopile array, 110°×75° FoV, −40…300°C object, NETD 0.1K @1Hz, 0.5–64Hz. It connects over I²C 0x33 (EEPROM-programmable) (up to 1MHz) and is powered from VIN 3.3–5.5V, onboard LDO (sensor 3.3V, <23mA).
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
- Thermal imaging for electronics
- People and animal detection
- Building heat-loss checks
Key features
What makes it different
Sensor
Melexis MLX90640ESF-BAA: 768-pixel (32×24) thermopile array, 110°×75° FoV, −40…300°C object, NETD 0.1K @1Hz, 0.5–64Hz
Interface
I2C 0x33 (EEPROM-programmable), up to 1MHz
Supply
VIN 3.3–5.5V, onboard LDO (sensor 3.3V, <23mA)
Libraries
Melexis MLX90640 API, Adafruit_MLX90640 / CircuitPython, Pimoroni (Pi), ESPHome external component
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 MLX90640ESF-BAA: 768-pixel (32×24) thermopile array, 110°×75° FoV, −40…300°C object, NETD 0.1K @1Hz, 0.5–64Hz |
|---|---|
| Interface | I2C 0x33 (EEPROM-programmable), up to 1MHz |
| Supply | VIN 3.3–5.5V, onboard LDO (sensor 3.3V, <23mA) |
| 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 | MLX90640ESF-BAA-000-TU (LCSC C17380659) |
| Revision | Rev B |
| Libraries | Melexis MLX90640 API, Adafruit_MLX90640 / CircuitPython, Pimoroni (Pi), ESPHome external component |
|---|
| JP1 (default Closed) | Cut to turn off the LED |
|---|---|
| JP2 (default Closed) | Cut to remove the host-side I2C pull-ups |
Performance
Noise vs frame rate
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-S35 MLX90640 Thermal Camera (110°) (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: Melexis MLX90640 API, Adafruit_MLX90640 / CircuitPython, Pimoroni (Pi), ESPHome external component
- Run an I²C scanner to confirm the address: 0x33
Compare
Which presence sensor?
| MLX90640 Thermal Camera (110°) (this board)This board | ET-S06 LD2410C mmWave Presence Carrier | ET-S34 AM312 Mini PIR Carrier | ET-S36 AMG8833 Grid-EYE Thermal Sensor | |
|---|---|---|---|---|
| What it does | 32×24 pixel thermal camera over I²C | 24 GHz human-presence radar carrier, level-shifted UART | Mini PIR motion carrier with activity LED | 8×8 thermal array for presence detection |
| Interface | I²C 0x33 (EEPROM-programmable), up to 1MHz | UART 256000 baud 8N1 + OUT GPIO | — | I²C 0x68 / 0x69 (JP3), 400kHz |
| Best for | Thermal imaging for electronics | Room occupancy for lighting and HVAC | Motion-activated lighting | Presence detection without a camera |
| Price | 229 AED | 15 AED | 12 AED | 139 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.