Datasheet

Breakout Wiring & Test

There are two ways to wire up these displays - one is a more flexible method (you can use any pins on the Arduino)

and the other is much faster (4-8x faster, but you are required to use the hardware SPI pins) We will begin by showing

how to use the faster method, you can always change the pins later for flexible 'software SPI'

Wiring up the display in SPI mode is pretty easy as there's not that many pins! We'll be using hardware SPI, but you can

also use software SPI (any pins) later. Start by connecting the power pins

3-5V Vin connects to the Arduino 5V pin - red wires

GND connects to Arduino ground - black wires

CLK connects to SPI clock. On Arduino Uno/Duemilanove/328-based, thats Digital 13. On Mega's, its Digital 52

and on Leonardo/Due its ICSP-3 (See SPI Connections for more details (https://adafru.it/d5h)) - this is the orange

wire

MOSI connects to SPI MOSI. On Arduino Uno/Duemilanove/328-based, thats Digital 11. On Mega's, its Digital 51

and on Leonardo/Due its ICSP-4 (See SPI Connections for more details (https://adafru.it/d5h)) - this is the white

wire

CS connects to our SPI Chip Select pin. We'll be using Digital 10 but you can later change this to any pin - this is

the yellow wire

RST connects to our TFT reset pin. We'll be using Digital 9 but you can later change this pin too - this is the blue

wire

D/C connects to our SPI data/command select pin. We'll be using Digital 8 but you can later change this pin too -

this is the green wire

Install Adafruit ST7735 TFT Library

We have example code ready to go for use with these TFTs. It's written for Arduino, which should be portable to any

microcontroller by adapting the C++ source.

Three

libraries need to be installed using the Arduino Library Manager…this is the preferred and modern way. From