The fuses are small and may be hard to find at you local Radio Shack. This is a package of 1A 2AG fuses. These fuses are used in our Trekker OOPic Expansion Boards.
Use these roll pins to fix sprockets to a shaft and keep them locked in place.
This is a bidirectional level shifter used to step down or up signals from 1.8V to 5V range.