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Interface a rotary phone dial to an Arduino

An old rotary phone can be used for a number of purposes in your Arduino projects - use it as a novel input device, or use the Arduino to interface a rotary phone to your computer. This is a very basic guide describing how to interface the dial to an Arduino, and get the number dialed passed into a computer over the Arduino's serial link. Step 1 Remove the dial from the phone First step is to remove the dia ...

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