The NanoPi Duo is designed and developed by FriendlyElec for makers, hobbyists and professionals. It is small, just 50 x 25.4 mm. It uses Allwinner’s Cortex-A7 H2+ SoC. It has 256M/512M DDR3 RAM and an onboard WiFi module. A UbuntuCore image is ready for it.
On such a small board rich interfaces such as Ethernet, USB, SPI, UART, I2C, PWM, IR and audio are exposed. It is powered from a MicroUSB port and boots OS from a MicroSD card.
Popular libraries and utilities: WiringNP and Python are ported to the NanoPi Duo’s system and they all are open source. The NanoPi Duo perfectly suits various light-weight IoT applications.
2 Hardware Spec
CPU: Allwinner H2+, Quad-core Cortex-A7 DDR3 RAM: 256MB Connectivity: 10/100M Ethernet Wifi:XR819 USB Host: 2.54mm pin x2, exposed in 2.54mm pitch pin header MicroSD Slot x 1 MicroUSB: OTG and power input Debug Serial Interface: exposed in 2.54mm pitch pin header Audio input/output Interface: exposed in 2.54mm pitch pin header GPIO1: 2.54mm spacing 16pin. It includes UART, SPI, I2C, Audio etc GPIO2: 2.54mm spacing 16pin. It includes USB,10/100M Ethernet, IO etc PCB Dimension: 25.4 x 50mm Power Supply: DC 5V/2A Temperature measuring range: -20℃ to 70℃ OS/Software: U-boot,Linux Kernel 4.11.2 (mainline) , Ubuntu 16.04.2 LTS (Xenial) Weight: xxg(With Pin-headers)