Arduino Prototyping Inputs #50: Contact Switches

Sensing if something is open or closed with a magnetic contact switch is easier than you might think. It’s also a sensor you should be able to pick up at your local hardware store, as they are used in most security systems.
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Prototyping Supplies:
• Inexpensive Arduino Compatible Kit -- amzn.to/2Dfqs5U
• A More Deluxe Starter Kit -- amzn.to/3g9nFtR
• Jumper Wire Kit - amzn.to/3f9rtK4
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• WaveShield Kit -- amzn.to/3g9vMq6
• Motor Shield Kit -- amzn.to/3hISQfL
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A few other FREE sensor tutorials you might like: (I have 100's!)
• Cellular Data shield - • Arduino Prototyping Te... z
• Capacitive Sensing - • Arduino Prototyping In...
• Luminosity Sensors - • Arduino Prototyping In...
• Thermocouples - • Arduino Prototyping In...
• Sensing Vibration - • Arduino Prototyping In...
A few other sensor tutorials you might like: (I have 100's!)
• Cellular Data shield - • Arduino Prototyping Te... z
• Capacitive Sensing - • Arduino Prototyping In...
• Luminosity Sensors - • Arduino Prototyping In...
• Thermocouples - • Arduino Prototyping In...
• Sensing Vibration - • Arduino Prototyping In...
And some playlists on prototyping with Arduino:
• The Basics - • Arduino Prototyping: T...
• Inputs - • Arduino Prototyping: I...
• Outputs - Arduino Prototyping, Techniques - • Arduino Prototyping Ba...
• Complete Prototyping Series! - • Arduino Prototyping: T...
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