Adafruit data logger shield for Arduino (Assembled)
4 GB SD card
Light sensor with matching 10K resistor Temperature sensor (-40 degC to 125 degC)
6 x AA battery holder with 2.1mm jack (unassembled)
You'll need 6 AA batteries, some wire and soldering tools to assemble the project.For more information, including libraries, schematics and examples see the data logger shield webpage Tested works with Arduino Uno, Leonardo, and Mega R3 or later.