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[Arshad Pathan] let us know about his latest project, a modular code lock that can be adapted to many different situations. The user interface is made up of a character LCD screen and a 3×4 keypad. For this example [Arshad] is using a stepper motor as the locking mechanism. When the board is first powered [...]

Tags:  arshad lock full featured-security character-lcd stepper-motor microcontrollers