4×4 Keypad-Based Security System using Arduino, PIR Sensor, Buzzer and 7 Segment Display_"satvik shrivastava" circuit diagram

4×4 Keypad-Based Security System using Arduino, PIR Sensor, Buzzer and 7 Segment Display_"satvik shrivastava"

By Satvik Shrivastava

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Components used: Arduino, LED, resistor

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