Arduino Secret Pattern Lock

Pattern lock using Arduino and Solenoid lock. The lock will only get opened when the correct pattern is entered. the pattern is a combination of "long" and "short" press of the pattern switch.

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100+ Switches in a single pin of Arduino

Introduction Did you run out of input pins? Don't worry, here is a solution without any shift registers. In this video, we are going to learn about connecting more than…

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