SparkFun DataLogger IoT – 9DoF

The SparkFun DataLogger IoT – 9DoF is a data logger that comes preprogrammed to automatically log IMU, GPS, and various pressure, humidity, and distance sensors. All without writing a single line of code! The DataLogger automatically detects, configures, and logs Qwiic sensors. It was specifically designed for users who just need to capture a lot of data to a CSV or JSON file and get back to their larger project. Save the data to a microSD card or send it wirelessly to your preferred Internet of Things (IoT) service!

Included in every DataLogger IoT is an IMU for built-in logging of a triple-axis accelerometer, gyro, and magnetometer. Whereas the original 9DOF Razor used the old MPU-9250, the DataLogger IoT uses the ISM330DHCX from STMicroelectronics and MMC5983MA from MEMSIC. Simply power up the DataLogger IoT, configure the board to record readings from supported devices, and begin logging! Data can be time-stamped when the time is synced to NTP, GNSS, or RTC.

The DataLogger IoT is highly configurable over an easy-to-use serial interface. Simply plug in a USB-C cable and open a serial terminal at 115200 baud. The logging output is automatically streamed to both the terminal and the microSD card. Pressing any key in the terminal window will open the configuration menu.

The DataLogger IoT – 9DoF automatically scans, detects, configures, and logs various Qwiic sensors plugged into the board (No soldering! No programming!)

The DataLogger IoT – 9DoF uses common microSD cards to record clear text, comma separated (i.e. CSV), or JavaScript Object Notation (JSON) files. You probably already have a microSD card laying around but if you need any additional units, see the related items. Note that the DataLogger IoT is not able to use any size microSD card. The DataLogger IoT supports 4-bit SDIO with microSD cards formatted as FAT32 as well as the older FAT16 (i.e. FAT) formats up to 32GB.

Low-power logging is supported. The DataLogger IoT can be configured to take readings at about 26 times a second with the default sensors turned on, or as slow as 1 reading every 24 hours. You choose! The DataLogger IoT has built-in LiPo charging set at 500mA/hr. When sleep mode is enabled, the resulting sleep current is approximately 200µA.

With a 2.4GHz WiFi connection, you can also send data to the cloud! The following IoT services are supported:

• MQTT Client
• MQTT Secure Client
• AWS IoT
• ThingSpeak MQTT
• Azure IoT
• HTTP IoT
• MachineChat

New features are constantly being added so we’ve developed two methods of updating the firmware on your DataLogger IoT! If you have a microSD card, you can download the firmware binary to the memory card and update the board through the configuration menu. If you have a WiFi connection, you can also update the firmware over the air using the configuration menu! No need to install Arduino or a bunch of libraries.

Get Started With The Datalogger IOT – 9DOF Guide

Features

• SP32-WROOM-32E Module
  • Integrated 802.11b/g/n WiFi 2.4GHz transceiver
  • Configurable via CH340C
• Operating voltage range
  • 3.3V to 6.0V (via VIN)
  • 5V with USB (via 5V or USB type C)
  • 3.6V to 4.2V with LiPo battery (via BATT or 2-pin JST)
  • Built-in MCP73831 single-cell LiPo charger
  • Minimum 500mA charge rate
  • 3.3V (via 3V3)
• MAX17048 LiPo Fuel Gauge
• Ports
  • 1x USB type C
  • 1x JST style connector for LiPo battery
  • 2x Qwiic enabled I²C
  • 1x microSD socket
    • Support for 4-bit SDIO and microSD cards formatted to FAT32
• 9-axis IMU
  • Accelerometer & Gyro (ISM330DHCX)
  • Magnetometer (MMC5983MA)
• LEDs
  • Charge (CHG)
  • Status (STAT)
  • WS2812-2020 Addressable RGB
• Jumpers
  • IMU interrupt
  • Magnetometer interrupt
  • RGB LED
  • Status LED
  • Charge LED
  • I²C pull-up resistors
  • USB Shield
• Buttons
  • Reset
  • Boot
• Dimensions: 1.66in. x 2.00in.
• Weight: 10.7g

Resources

• Schematic
• Eagle Files
• Board Dimensions
• Hookup Guide
• CH340 Drivers
• Firmware
• GitHub Hardware Repo