2.8" TFT Touch Shield for Arduino with Resistive Touch Screen
Description
Spice up your Arduino project with a beautiful large touchscreen display shield with built in microSD card connection. This TFT display is big (2.8" diagonal), bright (4 white-LED backlight) and colorful (18-bit 262,000 different shades)! 240x320 pixels with individual pixel control. As a bonus, this display has a resistive touchscreen attached to it already, so you can detect finger presses anywhere on the screen. (We also have a capacitive-touch version of this shield here)
This shield uses the SPI port for sending data to the ILI9341 chipset display, and I2C for reading the TSC2007 resistive touch screen driver. That makes it work great with just about any board that is 'Arduino or Mega shaped' as long as they have the I2C SDA and SCL pins after pin D13, and the SPI 2x3 port. If you want to access the remaining pins, we recommend a WingShield
Adafruit recently did a big update to this design to add:
TSC2007 Touch screen driver chip instead of STMPE811 (which was discontinued)
Selectable VddIO for use with 3.3V or 5V chips - by default IOref is used but if your board does not have the IOref pin, you can solder the jumper closed for whatever voltage you like
STEMMA QT port for quick connecting sensors and other I2C devices
Right Angle Reset button is easier to press now
The shield is fully assembled, tested and ready to go. No wiring, no soldering! Simply plug it in and load up Adafruit's libraries - you'll have it running in under 10 minutes! Works best with any classic Arduino or Mega -shaped board.
This display shield has a controller built into it with RAM buffering, so that almost no work is done by the microcontroller. This shield needs only a few pins: five SPI pins for the display (SPI + DC and CS), I2C and IRQ pin for the touch screen, and an optional backlight pin. One more pin can be used for the micro SD card if you want to read images off of it.
Technical details
240x320 resolution, 18-bit (262,000) color - Adafruit's library uses 16 bit color mode
High speed SPI display with digital SPI touchscreen driver
The display uses digital pins 9, 10 and SPI. Touchscreen controller requires I2C and pin #2 optional IRQ. microSD pin requires digital #4.
Works with any classic Arduino or Mega shaped boards.
Onboard 3.3V @ 300mA LDO regulator, current draw depends on usage but is about 100mA for the display and touchscreen
4 white LED backlight. On by default but you can connect the transistor to a digital pin for backlight control
4-wire resistive touchscreen attached to TSC2007 controller
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2.8" TFT Touch Shield for Arduino with Resistive Touch Screen
The Arduino Leonardo is a microcontroller board based on the ATmega32u4. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs).