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Raspberry Pi LED Blueprints by Agus Kurniawan

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Controlling AC/DC lamps using channel relay modules

A channel relay is a large mechanical switch. This switch is toggled on or off by energizing a coil. Wiring between the I/O control and the relay output does not connect with each other, so the MCU, which controls the I/O relay, is safe. For further information about how to use a relay, read the article available at http://www.circuitstoday.com/working-of-relays.

You can buy a channel relay module from your local electronics or online stores. The following are the online stores to get this stuff:

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