Adafruit Assembled Data Logging Shield for Arduino
Here's a handy Arduino shield: Adafruit had a lot of people looking for a dedicated and well-designed data logging shield. Adafruit worked hard to engineer an inexpensive but well-rounded design. Not only is it easy to assemble and customize, but there are great libraries, sample code and documentation at Adafruit.You can get going quickly - saving data to files on any FAT16 or FAT32 formatted SD card, to be read by any plotting, spreadsheet or analysis program. We even have a tutorial on how to use two free software programs to plot your data The included Real Time Clock timestamps all your data with the current time, so that you know precisely what happened when! Please note that this item does not come with an Arduino (you'll need one to use with the shield), or an SD card. It does come with the RTC battery, however. The sheild now comes with all the components soldered on and tested but does not have headers installed. You'll need some basic soldering skills to put it together, but even if you don't have much experience you can get it done in under 15 minutes.The only assembly required is to solder the header pins!SD card interface works with FAT16 or FAT32 formatted cards. 3.3v level shifter circuitry prevents damage to your SD card.Onboard 3.3v regulator is both a reliable reference voltage and also reliably runs SD cards that require a lot of power to run