Color 320x240 TFT Touchscreen, ILI9341 Controller Chip

This 320x240 color TFT display is recommended for use with Teensy 3.2 to Teensy 4.1, for high resolution color graphics.

Software

These displays can be used with the Adafruit_ILI9341 library or Optimized ILI9341 library (included with Teensyduino install).

The XPT2046 touch controller can be read with this XPT2046_Touchscreen library (included with Teensyduino install).

ILI9341_t3 supports large high-res fonts. A library of additional fonts is available, as well as huge collection of Google fonts, and even more fonts here. There's also an alternate https://forum.pjrc.com/threads/39804-ILI9341-font-builder, in addition to ttf_to_ili9341.pl.

Two alternate optimized libraries are available, from Frank B and KurtE.

Teensy 3.2 and purple test board are not included with this $16 display purchase.

Connections

Caution: Use only 3.3V signals with this display. CS, D/C, SDI, SCK, T_CLK, T_CS, T_DIN are NOT 5 volt tolerant. We recommend using this display only with Teensy LC, 3.x, and 4.x. It should not be used with 5V boards like Teensy 2.0 and Arduino Uno.

We do not recommend using the SD card socket on this display. It does not work, but this hardware modification may be able to get it working.

This ILI3941 display works well with Teensy 4.0 and 4.1, using the standard connections shown in the table.

Usage With Audio Board Connections

For use with the Teensy 3.x optimized library, use this 6 pin constructor code.

// For optimized ILI9341_t3 library
#define TFT_DC      20
#define TFT_CS      21
#define TFT_RST    255  // 255 = unused, connect to 3.3V
#define TFT_MOSI     7
#define TFT_SCLK    14
#define TFT_MISO    12
ILI9341_t3 tft = ILI9341_t3(TFT_CS, TFT_DC, TFT_RST, TFT_MOSI, TFT_SCLK, TFT_MISO);

For use with Adafruit's original ILI9341 library, in setup() before calling TFT.begin(), use SPI.setMOSI(7) and SPI.setSCK(14) to configure the SPI library for these alternate pins.

// For Adafruit's ILI9341 library
#define TFT_DC  20
#define TFT_CS  21
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

void setup() {
  SPI.setMOSI(7);
  SPI.setSCK(14);
  tft.begin();

Dimensions

High-Res Fonts

All fonts are available in these sizes: 8, 9, 10, 11, 12, 13, 14, 16, 18, 20, 24, 28, 32, 40, 48, 60, 72, 96

These images are only a small sample of the many fonts available: