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Story Keeping valuables safe and locked away is important to everyone. While you can have a manual safe, why not build your own safe box and add some smarts to it? Using an Arduino, a servo, joystick and an LCD screen, you can make the electronics for a combination lock safe. An overview of the safe system: This diagram shows the flow of data for the safe. Sensorsa. A joystick that controls the digits displayed on LCD screen. b. Two push buttons that are used to enter and set a new pas ...

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