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

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

By Dharna Chaudhary

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Components used: arduino, arduinouno, 7-segment, keypad, pir-sensor, buzzer

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