The DEV-19426 OpenLog Artemis (without IMU) is a data logger board. It is preprogrammed to automatically log GPS, serial data, and various pressure, humidity, and distance sensors. This OpenLog uses common microSD cards to record clear text, comma separated files.
Features

Artemis Module (Cortex-M4F based Apollo3 microcontroller)

Configurable via CH340E and Artemis Firmware Upload GUI

Operating voltage range

3.3V to 6.5V(via VIN with optional external power switch)

5V with USB (via 5V or USB type C)
3.6V to 4.2V with LiPo battery (via VBATT or 2-pin JST)

Built-in MCP73831 single cell LiPo charger
Minimum 450mA charge rate

3.3V (via 3V3)

Current consumption

~20mA (Run)
~80A (Sleep)
~18A (Deep Sleep – regulator shut down)

Ports

1x USB type C
1x LiPo battery enabled
1x Qwiic enabled I2C with power control
1x SWD 2×5 header
4x Analog-to-digital

14-bit, up to 1900Hz, 2V max (3.3V compatible)

Serial

Logging speeds up to 500000bps

1x microSD socket

Support for FAT32 and older FAT16 formats up to 32GB with power control

RTC with 1mAhr battery backup

LEDs

Power

LiPo charge indicator

Serial Tx and Rx

Status

Resources

Schematic

Eagle Files

Hookup Guide

Board Dimensions

Datasheet(Apollo3)

Artemis Integration Guide

Designing with the SparkFun Artemis

Artemis Development with Arduino

Arduino Core

Artemis Forums

Artemis Info Page

Qwiic Info Page

CH340E USB Drivers

Artemis Firmware Uploader GUI

Latest default firmware:v2.2
Geophone Logger firmwarefor logging seismic activity
GNSS Loggerfor advanced data logging with the uBlox F9 and M9 GNSS modules including support for RAWX and RELPOSNED

GitHub Hardware Repo

FAQs:
Q: What is the difference between the SparkFun OpenLog Artemis (with IMU) and the SparkFun OpenLog Artemis (without IMU)?
A: The main difference is the absence of the ICM-20948 IMU sensor in the “without IMU” version. This means it cannot directly log accelerometer, gyro, and magnetometer data. However, it can still auto-detect and log data from other Qwiic-enabled sensors and GNSS receivers.
Q: What sensors can the SparkFun OpenLog Artemis (without IMU) automatically log data from?
A: It can automatically detect and log data from various Qwiic-enabled sensors, including pressure, humidity, distance, and temperature sensors. It also supports GNSS receivers for GPS data logging.
Q: Does the SparkFun OpenLog Artemis (without IMU) require any coding to start logging data?
A: No, it comes pre-programmed and can automatically log data to a microSD card without requiring any coding.
Q: What types of microSD cards are compatible with the SparkFun OpenLog Artemis (without IMU)?
A: It supports microSD cards formatted as FAT32, FAT16 (up to 32GB), and exFAT.
Q: How can I configure the logging settings of the SparkFun OpenLog Artemis (without IMU)?
A: You can configure the logging settings, such as baud rate, logging interval, and sensor selection, through a serial terminal program like the Arduino IDE or others.