Super Secret Lock Box - Instructables

Super Secret Lock Box: This is a white oak box that I made. The handle twists and reveals a small hole. When you put a toothpick into the hole and push it moves the lock and allows the box to open.

Super Secret Lock Box - Instructables

Super Secret Lock Box W/ Capacitive Touch : 3 Steps (with Pictures) - Instructables

Super Secret Lock Box W/ Capacitive Touch : 3 Steps (with Pictures) - Instructables

Super Secret Lock Box - Instructables

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Secret Lock Box II Can You Open the Box Put a Gift Inside and Watch the Fun Cherry Version

LockBox : 5 Steps (with Pictures) - Instructables

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Arduino Lockbox With Solenoid and RFID & Custom Hardware : 7 Steps (with Pictures) - Instructables

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Check out TomGoff's instructable to see how he built a robot with PLC

LockBox : 5 Steps (with Pictures) - Instructables