Set of 4 roll pins. We often use these with our #25 sprockets to mount them to the motor shaft.
Use these roll pins to fix sprockets to a shaft and keep them locked in place.
A ready to ship prebuilt All-Terrain 4WD robot. It features 10" pneumatic 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.