A20-OLinuXino-MICRO is a single-board computer in a very compact form. It uses the Allwinner Technology A20 Dual-Core ARM Cortex-A7 processor.
This board has everything you might possibly need: HDMI, plenty of memory, two SD card connectors, and plenty of GPIOs. It is suitable for embedded programming enthusiasts, Linux gadget fans and also professionals since its low cost makes it a good solution for application-orientated embedded systems. It allows embedded software development without fully needing to understand the hardware side.
This version of the A20-OLinuXino does not come with a pre-built OS, as it does not have NAND Flash. The board can boot from a microSD card. Pre-built Debian Linux and Android images are available to download; see below. In the Optional Recommended Products list at the bottom of this page, you can choose to add a microSD card with a Debian or Android image already installed.
In addition, the official Debian 8.0 Jessie release now has a Device Tree Blob specific to this board.
There is version of this board with 4GB NAND Flash, which will run 2-3 times faster than running from a microSD card — see the A20-OLinuXino-MICRO-4GB.
This board is an open-source hardware and software project; see the links below to participate in the development discussion.
A20 Development Board Features
- A20 Cortex-A7 dual-core processor, 3D Mali400 GPU
- 1GB DDR3 RAM
- SATA connector and 5V SATA power connector
- HDMI output with ESD protection
- Built-in Full HD support (1080p)
- VGA output on 6-pin 1.25mm (0.05") pitch connector
- 2x USB High-Speed Host with power control and current limiter
- USB-OTG with power control and current limiter
- 100Mbps native Ethernet
- Battery connector with battery charging capability (see compatible LiPo Batteries)
- Audio input (3.5mm microphone jack)
- Audio output (3.5mm headphones jack)
- Two UEXT connectors (see below)
- LCD connector to work with 4.3", 7.0", 10.1", 15.6" LCD modules
- 160 GPIOs on three GPIO connectors
- microSD card connector
- SD/MMC card connector (on back side of board)
- DEBUG-UART connector for console debug (see compatible USB-to-Serial Cable in options)
- GPIO LED
- Battery charge status LED
- Power LED
- 2KB EEPROM for MAC address and other storage
- 10 Buttons with Android functionality, plus a Reset button
- Four mounting holes
- 6V to 16V input power supply; noise immune design (2.5mm barrel jack)
- Dimensions: 142.24 × 82.55 mm
Add-on UEXT Modules Available This board has two universal extension connectors, UEXT1 and UEXT2, which allow you to add peripheral modules easily. The UEXT can provide I2C, RS232, SPI and power to the external device. Please see the UEXT Boards Category for a full list of modules that can plug into the UEXT ports.
A20 Development Board Resources
Warning: If your HDMI TV does not have a grounded power supply, it can damage the OLinuXino board. If you can't use a grounded TV, add the 1000V DC USB Isolator between your PC's USB2.0 port and the USB-to-Serial Cable, and keep that cable connected to the OLinuXino board. The cable and the isolator can be purchased from the options below.
Display Options If you want to use one of the optional LCDs listed below, you'll also need the 2x20 IDC Ribbon Cable to connect it, so be sure to select that cable as well. Please take note of the following:
For Linux: In the pre-built image available from the Wiki page (or on the SD card listed below), the default display setting is for HDMI 720p @ 60Hz. The Wiki page has instructions for changing to an LCD or VGA display (or for changing the HDMI settings, e.g. to 1080p).
For Android: There are separate images available to support the 7-inch LCD or the 10.1-inch LCD. Other LCD sizes currently are unsupported. HDMI 720p and LCD output work simultaneously. VGA output is not supported in the current Android image (you could use the HDMI-to-VGA adapter listed below). The SD card option below will include the image with 7-inch LCD support. If you need the 10.1-inch support, please call us to make sure we write the correct image for you.
Optional Recommended Products for this Item
|Plexiglass Enclosure for A20-OLinuXino-MICRO and SATA Hard Drive||+|| US$6.19|
|USB-to-Serial Cable, 6 Female Header Wires, 3.3V I/O||+|| US$14.90|
|Power Supply 3-12V DC, U.S. plug, 6 connection tips||+|| US$10.00|
|Power Supply 3-12V DC, US/UK/Euro/AU Plugs, 100-240VAC||+|| US$10.90|
|VGA Adapter Cable to 6-pin, 1.25mm Pitch, for A20-OLinuXino||+|| US$4.20|
|Frame Kit for 7||+|| US$2.55|
|10.1-inch LCD for A13/A20 OLinuXino, 1024x600||+|| US$49.95|
|2x5 (10-pin) 0.1" pitch IDC Connector Flat Ribbon Cable, 15cm||+|| US$1.90|
|USB WiFi Dongle, 2.4GHz 802.11b/g/n, for A13-OLinuXino||+|| US$5.00|
|HDMI Cable, 6 ft., Standard, A Male to A Male||+|| US$2.95|
|Ethernet Cable, CAT5E 350MHz Unshielded, 7ft.||+|| US$3.60|
|Ethernet Crossover Cable, CAT5E 350MHz Unshielded, 5ft.||+|| US$7.00|
|USB 2.0 Cable, 6ft., A-Male / B-Male||+|| US$6.00|
|USB 2.0 Cable, 6ft. A-Male / Mini-USB (5-pin) B-Male||+|| US$6.00|
|USB 2.0 Cable, 6ft. A-Male / Micro-USB (5-pin) B-Male||+|| US$6.00|