It’s a Snap

Circuits and Marie Van Brittan Brown

Explore electronics and learn about the inventor of the home security system.

A circuit is a passage for electronic current to flow, and we use hundreds of them daily. To turn on a light, increase the volume, or charge a phone. Marie Van Britton Brown, a Black nurse from New York, wanted to feel safe in her home, so she created a closed-circuit television security system (the model for all business and home security today). Using Snap Circuits, follow the step-by-step directions to build an FM radio, digital voice recorder, burglar alarm, doorbell and more.

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