This 2x18 header strip is very useful to connect Arduino shields. Primarily intended for the Arduino Mega. They can be used with Arduino shields because of their height.
A ready to ship prebuilt All-Terrain 4WD robot. It features 10" tiller tires and IG42 078RPM Gear motors. Controller, battery, and charger included. Also included is a cover with 80/20 1" extruded aluminum rails.
SparkFun's minimal design approach to Arduino. This is a 5V Arduino running the 16MHz bootloader.