The 4DPi is a display board for the Raspberry Pi, which plugs directly on top of a Raspberry Pi and displays the primary output which is normally sent to the HDMI or Composite output of the Pi. It comes in either a 3.2" 320x240 or 3.5" 480x320 version, with both versions featuring a resistive touch-panel.
Communication between the display and the Raspberry Pi is via a high speed 48Mhz SPI connection, which utilises an on-board processor for direct command interpretation and SPI communication compression, and features a customised DMA enabled kernel.
The 4DPi is designed to work with the Raspbian Operating System running on the Raspberry Pi, as that is the official Raspberry Pi operating system.
The 4DPi features a breakout header (P2), which enables all of the Raspberry Pi GPIO pins to be accessed while the 4DPi is connected. These can be access with jumper wires or with an IDC ribbon cable.
Powered directly off the Raspberry Pi, this display allows easy connection, and a single download package will get you up and running with a few simple steps.
Features
Universal 3.2" or 3.5" Primary Display for the Raspberry Pi.
Compatible with Raspberry Pi A, B, A+, B+ and Pi 2 versions.
320x240 or 480x320 QVGA Resolution, RGB 65K true to life colours, TFT Screen with
integrated 4-wire Resistive Touch Panel.
Display full GUI output / primary output, just like a monitor connected to the Raspberry
Pi.
High Speed 48Mhz SPI connection to the Raspberry Pi, featuring SPI compression
technology.
Powered directly off the Raspberry Pi, no external power supply is required.
Typical frame rate of 17 - 25FPS. Higher if image is able to be compressed by Kernel.
On/Off or PWM controlled backlight, selectable by on board jumper.
Module dimensions:
4DPi-32 - 57.2 x 92.2 x 21mm (including corner plates).
4DPi-35 - 56.6 x 97.6 x 20.8mm (including corner plates).
Weighing ~ 50g.
Display Viewing Area:
4DPi-32 - 48.60 x 64.80mm.
4DPi-35 - 49 x 73.4mm
4x corner plates with 2.6mm holes for mechanical mounting.