BANANA PI

Banana Pi is a single-board computer.  Banana Pi targets to be a cheap, small and flexible enough computer for daily life.  Built with ARM Cortex-A7 Dual-core CPU and Mali400MP2 GPU, and open source software, Banana Pi can serve as a platform to make lots of applications for different purposes. 

Banana Pi Specification

SoC	Allwinner A20* (ARM Cortex-A7 dual-core, 1GHz, Mali400MP2 GPU)
System Memory	1GB DDR3 DRAM
Storage	SD card slot, Extensible with SATA connection (2.5" SATA HDD with 5V)
Video output	HDMI, Composite, Extensible with on-board LVDS connector
Audio I/O	HDMI, 3.5mm stereo jack output, On-board microphone input
Connectivity	Gigabit Ethernet
USB	2* USB 2.0 ports, 1* OTG micro USB port, 1* micro USB for power supply**
Expansion	Extensible 26-pin headers, Camera connector, Display connector for LVDS and touch screen
Misc.	3* on-board buttons, (Power, Reset, Uboot key), IR receiver
Dimensions	92mm X 60 mm
Weight	48 g

Pin Definitions of Extensible connector

  Banana Pi has multiple extensible connectors for users to develop their own amazing projects and applications.   Most of common extension accessories Including LCD panel, touch screen, camera module, UART console and GPIO control pins are accessible from Banana Pi on-board connectors and headers.

Banana Pi extensible 26-pins GPIO headers

  Banana Pi has 26-pins GPIO headers to extend the functions such as I2C, SPI, 5V and 3.3V output…etc.   There are also additional GPIO pins available for extension controls and daughter boards.  For instance, you can use those headers to connect an Arduino board for your projects.  Here could be the start point for your way of exciting applications. 

CON3 (GPIO Headers)

  CON3 is a DIP-26 headers.  The header pin definitions of CON3 are shown as below.

You can connect the headers for I2C, UART, SPI connections.  The 5V and 3.3 V power output are also available here.  Meanwhile, there are several pins free for GPIO pins for your specific usage.