请注明转自：https://www.kalet.cn/view.asp?id=749
ST7735S(彩色) 液晶接线
BLK ---> 11 (GPIO17)
RS ---> 13 (GPIO27)
RST ---> 15 (GPIO22)
CS ---> 24 (GPI_CE0)
SC ---> 23 (SPI_CLK)
DI ---> 19 (SPI_MOSI)
GND ---> 39 (Ground)
VCC ---> 01 (3.3V)
SSD1306(单色) 液晶接线
GND ---> 39 (Ground)
VCC ---> 01 (3.3V)
D0 ---> 23 (SPI_CLK)
D1 ---> 19 (SPI_MOSI)
RES ---> 16 (GPIO23)
DC ---> 18 (GPIO24)
CS ---> 24 (GPI_CE0)
RC522 RFID接线
SDA ---> 26 (GPI_CE1)
SCK ---> 23 (SPI_CLK)
MOSI ---> 19 (SPI_MOSI)
MISO ---> 21 (SPI_MISO)
IRQ ---> (NULL)
GND ---> 39 (Ground)
RST ---> 12 (GPIO18)
3.3V ---> 01 (3.3V)
MAX7219 8x8点阵接线
VCC ---> 01 (3.3V)
GND ---> 39 (Ground)
DIN ---> 19 (SPI_MOSI)
CS ---> 24 (GPI_CE0)
CLK ---> 23 (SPI_CLK)
三色LED接线
V ---> 34 (Ground)
R ---> 36 (GPIO16)
G ---> 38 (GPIO20)
B ---> 40 (GPIO21)
低电平蜂鸣器
GND ---> 39 (Ground)
I/O ---> 22(GPIO25)
VCC ---> 01 (3.3V)
触摸按钮（4个）
OUT1 ---> 29 (GPIO05)
OUT2 ---> 31 (GPIO06)
OUT3 ---> 33 (GPIO13)
OUT4 ---> 35 (GPIO19)
GND ---> 39 (Ground)
VCC ---> 01 (3.3V)
