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12 lines
223 B

4Bit HD44780 LCD and PCF8574 Pinout
+-\/-+
A0 1| |16 VCC
A1 2| |15 SCA
A2 3| |14 SCL
RS 4| |13 N/C
RW 5| |12 PD7
E 6| |11 PD6
CTRL 7| |10 PD5
GND 8| |9 PD4
+----+