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Tiny yet powerful, these boards are some of the best for designing wearables for fitness monitoring    In this hectic lifestyle, we take all measures to stay healthy. To keep track of our fitness, we often resort to buy expensive wearables....
This circuit produces an alarm whenever someone comes near the spotting range of its passive infrared (PIR) motion sensor. It can be used as a security system to guard your home and other property, if utilised properly. The author’s...