The cute PiTFT got even more adorable with this little primary display for Raspberry Pi in HAT form! It features a 2.2" display with 320x240 16-bit color pixels. The HAT uses the high speed SPI interface on the Pi and can use the mini display as a console, X window port, displaying images or video etc. Best of all it plugs right in on top of your Model A+ or B+ and fits into Adafruit's case quite nicely.
It's designed to plug directly onto the Raspberry Pi 2 or Raspberry Pi 1 Model A+ or B+ . While not specifically designed for Pi Model A or B, you can use it with A/B if you solder in an extra-tall 2x13 header (not included) instead of the included 2x20 header
This design uses the hardware SPI pins (SCK, MOSI, MISO, CE0, CE1) as theyll as GPIO #25. All other GPIO are unused and are available on a 25-pin long breakout line. Since they had a tiny bit of space, there's 4 flat tactile switches wired to four GPIOs, that you can use if you want to make a basic user interface. For example, you can use one as a power on/off button.
To make it super easy for use: they've created a custom kernel package based of off Notro's awesome framebuffer work, so you can install it over your existing Raspbian (or derivative) images in just a few commands. Our tutorial series shows you how to install the software, play small videos, or display images such as from your PiCam and more!