Arduino Shield

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Schematic

Arduino MISC Board

Function Pin
Trim pot A0
Buttons A1, 2, 3
DS18B20, LM35 A4
IO (3pin header, VCC GND IO) A5
Serial port, support wireless module APC220, bluetooth, etc D1, D0
Infrared receiver. SFH506 D2
Buzzer D3
IO (3pin header, VCC GND IO) D5, D6, D9
SDI, CLK, Latch -> 2x 74hc595 of 4xsegment display D8 D7 D4
LEDs D13-D10