SparkFun
SparkFun DataLogger IoT - 9DoF
The SparkFun DataLogger IoT - 9DoF is a preprogrammed data logger that automatically detects, configures, and logs Qwiic-compatible sensors — all without wri...
The SparkFun DataLogger IoT - 9DoF is a preprogrammed data logger that automatically detects, configures, and logs Qwiic-compatible sensors — all without writing a single line of code. Simply plug in your sensors, power up, and start capturing data to a microSD card or send it wirelessly to your preferred IoT service.
The board includes a built-in 9-axis IMU (ISM330DHCX accelerometer/gyro + MMC5983MA magnetometer), ESP32 WiFi connectivity, LiPo battery charging, and a fuel gauge. Data can be saved as CSV or JSON, and time-stamped via NTP, GNSS, or RTC.
Key Features
- No-Code Data Logging – Automatically detects and logs supported Qwiic sensors
- Built-In 9-Axis IMU – ISM330DHCX (accelerometer + gyro) and MMC5983MA (magnetometer)
- ESP32 WiFi – 802.11b/g/n 2.4 GHz for IoT cloud connectivity
- Flexible Data Output – Log to microSD (CSV/JSON) or stream to IoT services
- IoT Service Support – MQTT, AWS IoT, Azure IoT, ThingSpeak, HTTP IoT, MachineChat
- Low-Power Mode – Configurable from ~26 readings/sec down to 1 reading per 24 hours; ~200 µA sleep current
- LiPo Battery Management – Built-in MCP73831 charger (500 mA) with MAX17048 fuel gauge
- Over-the-Air Updates – Update firmware via WiFi or microSD card
- Serial Configuration – Easy setup via USB-C at 115200 baud
Supported Auto-Detect Sensors
- GNSS/GPS – u-Blox modules (ZED-F9P, NEO-M8P-2, SAM-M10Q, SAM-M8Q, ZOE-M8Q, NEO-M9N, MAX-M10S)
- IMU – ISM330DHCX (built-in via SPI)
- Magnetometer – MMC5983MA (built-in via SPI)
- Distance – TMF8820, TMF8821, VCNL4040, VL53L1X, VL53L4, VL53L5
- Pressure/Humidity/Temp – BME280, LPS25HB, MPRLS, MS8607, MS5637, AHT20, SHTC3, SDP31, BMP384, BMP581
- Air Quality – CCS811, SGP30, SGP40, SCD30, SCD40, BME680, BME688, FS3000, SEN54, STC31, VEML6075, VEML7700
- Temperature – AMG8833, MCP9600, PT100 (ADS122C04), TMP117
- Power – ACS37800 Power Meter, MAX17048 Fuel Gauge (built-in)
- Other – RV8803 RTC, ST25DVxxKC NFC/RFID, MAX32664 Biomedical Sensor Hub, NAU7802 Scale, Qwiic Button, Qwiic Twist, ADS1015/ADS122C04 ADCs
Specifications
- Processor – ESP32-WROOM-32E
- Operating Voltage – 3.3V to 6.0V (VIN), 5V (USB-C), 3.6–4.2V (LiPo)
- USB – USB Type-C with CH340C serial interface
- Storage – microSD slot (4-bit SDIO, FAT32, up to 32 GB)
- Connectivity – 2× Qwiic I2C ports, 802.11b/g/n WiFi
- LEDs – Charge, Status, and WS2812 addressable RGB
- Buttons – Reset and Boot
- Dimensions – 42.2 × 50.8 mm (1.66 × 2.00 in)
- Weight – 10.7 g
Ideal For
- Environmental and weather monitoring stations
- Motion and orientation data capture
- Remote IoT sensor logging with cloud connectivity
- Field research and long-duration data collection
Package Contents
- 1× SparkFun DataLogger IoT - 9DoF
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- ADS122C04
- A Texas Instruments analogue-to-digital converter chip that measures small analogue voltages and reports them digitally over I2C. The exact chip matters because it sets the board’s resolution, input options, speed, and software support.
- baud
- Baud is the signalling rate of a serial connection, often used as the speed setting for UART communication. Matching the baud rate matters because both connected devices must use the same setting for readable data.
- BME680
- A Bosch environmental sensor chip that measures temperature, humidity, air pressure, and gas-related air quality changes. Seeing BME680 tells you this breakout is built around a specific all-in-one sensor, so you can check library support, accuracy, and datasheet details for that chip.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- GNSS
- GNSS stands for Global Navigation Satellite System, covering positioning systems such as GPS and similar satellite networks. It matters here because high-precision GNSS modules can output lots of serial position data that this product can send wirelessly to a computer or phone.
- GPS
- The US satellite navigation system used by GNSS receivers to calculate position and time. Support for GPS is important because it is widely available and often used together with other constellations for more reliable positioning.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IMU
- An Inertial Measurement Unit combines motion sensors to measure movement and orientation. It matters for asset tracking because it can detect movement, tilt, vibration, or changes in direction.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- LiPo
- A lithium polymer rechargeable battery commonly used in portable electronics projects. It matters because LiPo batteries need correct charging circuitry and care, and this board includes hardware intended for that battery type.
- magnetometer
- A sensor that measures magnetic fields, often used to work out compass direction. It matters because nearby magnets, motors, or metal objects can affect readings and may require calibration.
- MAX17048
- A battery fuel-gauge chip that estimates how much charge is left in a LiPo battery. It matters for portable projects because your software can monitor battery level instead of only measuring voltage.
- MCP73831
- A lithium battery charger chip used to safely charge a single-cell LiPo battery. It matters because it lets the board recharge a battery from USB or another input without needing a separate charger module.
- microSD card
- A microSD card is a small removable memory card used to store files such as audio tracks. For this product, the card is where the sound files live, so its capacity and formatting can affect how many sounds you can use.
- MQTT
- A lightweight messaging protocol often used for IoT devices to publish and receive data through a server called a broker. It matters for home automation and sensor networks because it is simple, efficient, and widely supported.
- NEO-M8P-2
- A u-blox GNSS receiver module that supports high-precision RTK positioning. The exact module matters because it determines the board’s accuracy, update rates, supported interfaces, and whether it can work as a rover or base station.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- RGB
- Short for red, green and blue, usually referring to an LED that can mix those three colours. It matters because controlling an RGB LED teaches how separate outputs combine to create different colours.
- RTC
- A Real-Time Clock keeps track of time even when the main processor is asleep or powered down, usually with a small backup battery. It matters for data logging and tracking projects that need accurate timestamps.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- TMP117
- A related Texas Instruments digital temperature sensor chip with a similar firmware interface to the TMP119. It matters because software written for the TMP117 may be adaptable to this board, but code may still need to check the chip identifier.
- USB Type-C
- A reversible USB connector used for power and data on many modern devices. On this kit it indicates an alternate 5V power input, which may be useful for setup or charging without the solar panel.
- USB-C
- A modern reversible USB connector used for power and data connections. On this product it matters because it can connect directly to a computer as well as to a microcontroller project.
- ZED-F9P
- A u-blox GNSS receiver module designed for high-precision positioning, including RTK rover and base-station use. The exact module matters because it determines the supported satellite bands, update rates, correction formats and achievable accuracy.
Find this product in
Connectivity
Sensors & Input
SparkFun DataLogger IoT 9DoF Schematic
Schematic · 244.4 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 1.8 MB · Click any page to view full size
Resources & Downloads
Guides, code examples, and more
Related Tutorials
Free guides on learn.littlebird.com.au