3.Power and Pin Configuration

Power Requirements

Hardware	Recommended PSU current configuration	Maximum USB peripheral current draw
Raspberry Pi 3B	2.5A	1.2A

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Pin Configuration

Component	Raspberry Pi I/O(BOARD)
Raspberry Pi 3B	RFID PIN RPI I/O(BOARD) MOSI 19 MISO 21 SCK 23 RST 22
Buzzer	12
LED	36
Display(16X2)	D-4 -> D-7