OpenLog is an open source data logger. Simple to use, simple to change.
SparkFun doesn't mess around when they have something they want to make happen. There's been too many projects needing a simple, effective serial datalogger, so hence: The OpenLog - an open source data logger!
The OpenLog is a serial logger that just works. Power it up and it will starts logging any received serial data at 9600bps. Sending Ctrl+z will drop out of logging and in to command mode. 'new' will create a new file. 'md' makes a directory. '?' brings up the list of commands. OpenLog doesn't do everything, but it does log serial streams extremely well. Here's an example of how it is used:
That's it! OpenLog firmware is open source and is based on Roland Riegel's FAT library. OpenLog currently supports FAT16 (up to 2GB microSD cards). (FAT32 work is underway - stay tuned... or help!)
All the design files (schematic, PCB layout, firmware) are open source released under the CC-SA v3 license and are available through Github.
Dimensions: 0.16 x 0.6 x 0.75" (4 x 15 x 19mm)
The OpenLog project is housed on github! Please see the wiki for the most up-to-date firmware, feature requests, files, and datasheet specs.