Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Microcontroller enclosure containing Arduino Uno R2 and optical relay modules for shutter control. A breadboard on the right has lamps that indicate circuit status; these are helpful for troubleshooting. This figure is included to assist the reader in constructing the microcontroller.
