Learn how to make a simple door alarm to enhance your home security with our step-by-step guide. This DIY theft alert alarm is perfect for keeping unwanted guests away and protecting your belongings.

With strong reflectance, the output voltage tends towards GND; with weak reflectance, it tends towards Vcc. The resistor wired in series with the infrared LED sets the operating current to a safe ...

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SShayanHussain / SMART-DOOR-LOCK-SYSTEM-USING-ARDUINO Public Notifications Fork 0 Star ...