The I2C-It is a great sensor, and is only more so when used as part of a greater chain. Use the I2C-It Cable harness to hook them up!
The Phidget Mini-Dual Axis Joystick is a dual axis mini joystick with momentary contact switch.
This little gadget does a great job of letting you sharing files with your computer utilizing simple serial commands.
OpenLog is an open source data logger. Simple to use, simple to change.
Ever need a convenient way to log 4 channels remotely, and don't have a lot of time to mess around programming up your own? PICAXE to the rescue!
This complete module is built upon the same technology as the ET-301, but includes on-board voltage regulation, LED status indicator, battery backed RAM, and a built-in patch antenna!
With the GPS Shield you can add GPS functionality to your Arduino.
This is a multi-band antenna covering the cellular, GPS, and WiFi frequency bands.
The PMB-688 GPS module provides high performance with a SiRFstarIII chipset and integrated patch antenna.