SparkFun OpenLog Artemis (without IMU) _RPI_SD_FLASH or to make LEDs or

or to make LEDs or lights pulse in time with your heart

and they also work with 80mm

Nice bright indicator or illuminator

Technical Specs for nRF52840:

SparkFun OpenLog Artemis (without IMU) _RPI_SD_FLASH or to make LEDs orThe SparkFun OpenLog Artemis is an open source data logger that comes preprogrammed to automatically log GPS, serial data, and various pressure, humidity, and distance sensors. All without writing a single line of code! OpenLog Artemis, or "OLA," automatically detects, configures, and logs Qwiic sensors. The OLA is specifically designed for users who just need to capture a lot of data to a CSV and get back to their larger project. Simply connect a