Datasheet

Comment out option 1, and uncomment option 2. Then you can change the TFT_ pins to whatever pins you'd like!

You can also save a pin by setting

#define TFT_RST 9

#define TFT_RST 0

and connecting the RST line to the Arduino Reset pin. That way the Arduino will auto-reset the TFT as well.

// Option 1 (recommended): must use the hardware SPI pins

// (for UNO thats sclk = 13 and sid = 11) and pin 10 must be

// an output. This is much faster - also required if you want

// to use the microSD card (see the image drawing example)

Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

// Option 2: use any pins but a little slower!

#define TFT_SCLK 13 // set these to be whatever pins you like!

#define TFT_MOSI 11 // set these to be whatever pins you like!

//Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);