SparkFun OpenLog Open-source data logger works over a simple serial connection Supports microSD FAT16/32 cards up to 32GB Configurable baud rates up to 115200bps Preprogrammed ATmega328 and bootloader

Description

💡 Capture every byte, power every project — the OpenLog advantage!

The SparkFun OpenLog is an open-source serial data logger featuring an onboard ATmega328 microcontroller running at 16MHz with Optiboot bootloader. It supports microSD cards up to 64GB (FAT16/32), configurable baud rates up to 115200bps, and operates with ultra-low power consumption (~5-6mA). Designed for seamless Arduino compatibility, it acts as a reliable black box for scientific data capture and debugging.