Component Sources

				BARN DOOR INFORMATION
				Introduction
				Drive Mechanism
				Drive Electronics
				Latitude Wedge
				Camera Platform
				Component Sources
				Manually Operated Version
				Helpful Links
				ASTROPHOTOS
				Comet Hale-Bopp Photos
				Constellation Portraits

For my barn door project, I purchased components from the following vendors.

Mouser Electronics (small parts, ICs, connectors, switches)

Radio Shack (circuit board, connectors, hook-up wire)

The following vendors offer stepper motors, in addition to other electronic components. I did not make any purchases from these vendors for this project.
Herbach and Rademan
Jameco Electronics
Digi-Key
Electronic Inventory Online
All Electronics