4×4 Keypad-Based Security System using Arduino, PIR Sensor, Buzzer and 7 Segment Display(avanish) circuit diagram

4×4 Keypad-Based Security System using Arduino, PIR Sensor, Buzzer and 7 Segment Display(avanish)

By Avanish Rajput
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Components used: arduino, arduinouno, keypad, 7-segment, buzzer, pir-sensor, resistor

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