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February 23, 2017

ODROID-XU4 Development Board Price Drops to $59, Now Supports Linux 4.9 LTS

ODROID-XU4 development board powered by Samsung Exynos 5422 octa-core processor launched in summer 2015, but even after two years, it’s one of the fastest, if not the fastest, low cost development board on the market. It is also equipped with Gigabit Ethernet and USB 3.0 ports, but so far at $74, it was quite much expensive than slower peers. Hardkernel has now decided to lower the price to $59 plus shipping, which is really a good deal in terms of price/performance, and you’ll also benefit from close to two years development, as the board now supports Linux 4.9 with updates promised until early 2019. Here’s a reminder of the technical specifications: SoC – Samsung Exynos 5422 quad core ARM Cortex-A15 @ 2.0GHz + quad core ARM Cortex-A7 @ 1.4GHz with Mali-T628 MP6 GPU supporting OpenGL ES 3.0 / 2.0 / 1.1 and OpenCL 1.1 Full profile System Memory – 2GB […]

December 15, 2016December 15, 2016

Quectel SC20 Smart LTE Modules with WiFi, BLE and GPS Run Android 5.1

Google may just have released Android Things operating systems for IoT applications, but its big brother – Android – has already gotten into some other IoT systems such as Quectel SC20 module powered by a Qualcomm processor and supporting LTE, WiFi, Bluetooth LE, and GNSS functions. Quectel SC20 comes in different flavors to cater for various markets, but all module share most of the same specifications: SoC – Unnamed Qualcomm processor System Memory – TBD Storage – 8GB flash Cellular Connectivity – FDD LTE, TDD LTE, TD-SCDMA, EVDO/DCMA, WCDMA, and GSM; antenna: MIMO 2×2, supports Rx-diversity Other Wireless Connectivity WiFi – 2.4GHz 802.11b/g/n (SC20-CE/-W); Dual band 802.11a/b/g/n/ac (SC20-E/-A/-AU/-J) Bluetooth 2.1+EDR/3.0/4.1 LE GNSS – GPS, GLONASS, and BeiDou Interfaces LCD – 4x lanes MIPI-DSI, 1.5Gbps each, HD (720p) @ 60fps Camera – MIPI-CSI, up to 1.5Gbps per lane, supports two cameras 2-lane MIPI_CSI for rear camera, up to 8MP 1-lane MIPI_CSI […]

Debian on DragonBoard 410c Development Board

I purchased Qualcomm DragonBoard 410c development board last year, and first tested it and run some benchmark on the 96Boards compliant hardware with Android. I found that it was still work-in-progress, and decided to wait before trying Debian on the board. I’ve now done so, and will report by experience installing Debian Linux, playing with the board, and running Phoronix benchmarks to compare it to other ARM Linux boards. Installing Debian on DragonBoard 410c The first challenge is to navigate through the documentation that is not always clear or up-to-date. I eventually ended up on DragonBoard 410c Wiki on Github. You then have to decided which image you want. While there are two official operating systems with Android and Debian, you can three “entities” releasiong their own images. For Debian specifically, you have the Linaro image, and Reference Platform Build (RPB) image. I could not find any changelog or known […]

April 15, 2015May 29, 2017

Linux 4.0 Release – Main Changes, ARM and MIPS Architectures

Linus Torvalds “Ima Sheep” released Linux Kernel 4.0 on Sunday: So I decided to release 4.0 as per the normal schedule, because there really weren’t any known issues, and while I’ll be traveling during the end of the upcoming week due to a college visit, I’m hoping that won’t affect the merge window very much. We’ll see. Linux 4.0 was a pretty small release both in linux-next and in final size, although obviously “small” is all relative. It’s still over 10k non-merge commits. But we’ve definitely had bigger releases (and judging by linux-next v4.1 is going to be one of the bigger ones). Which is all good. It definitely matches the “v4.0 is supposed to be a_stable_ release”, and very much not about new experimental features etc. I’m personally so much happier with time-based releases than the bad old days when we had feature-based releases. That said, there’s a few […]

February 17, 2015February 18, 2015

Power Consumption of Amlogic S812 and Rockchip RK3288 TV Boxes

The recent post comparing the power consumption of ODROID-C1 vs Raspberry Pi boards, as made me want to give another try at power consumption measurements. Regular reader already know I made a power measurement board and cables capable of hading different connectors (micro USB, mini USB, power barrels, etc..), but eventually it failed to deliver enough current to the boards for any meaning testing. But since I now have a better power supply, and multi-meter, it was worth another try, especially since I could draw some pretty charts. I decided to test the three most popular Chinese SoCs for mini PCs namely Amlogic S812 (4x Cortex A9), Rockchip RK3288 (4x Cortex A17), and Allwinner A80 (4x Cortex A15 + 4x Cortex A7) using respectively Eny M8S, Open Hour Chameleon, and A80 OptimusBoard. If you are paying attention, you must have noticed Allwinner A80 is not part of the title, that […]

January 21, 2015January 21, 2015

Snappy Ubuntu Core is an IoT Linux Distribution for ARM and x86

Canonical has announced a version of Ubuntu specifically designed for IoT devices running Linux, with a low hardware requirements, and a new package manager called snappy, replacing apt-get for this version of Ubuntu, which provides simpler, faster, and more reliable updates, stronger security, and allows roll-backs in case something goes wrong. Easy firmware updates are something missing in most connected device, which means they are more vulnerable to potential hackers, but with snappy security updates should be able to make it regularly, so that if something like heartbleed occurs again, you know your router, home automation gateway, connected washing machine, or robot will be soon patched automatically. Let’s go through the hardware requirements first: Processor – 600 MHz processor (ARMv7 or greater, or x86) System Memory – 128 MB RAM or greater (The system itself uses 40 MB RAM) Storage – 4GB flash / storage for factory reset and system […]

November 11, 2013

The VERVE Connects Sensors Your Computer for Gaming, Monitoring, and More

The VERVE is a little box that connects to one of the USB port of your Windows or Mac OS X computer (Linux support coming in 2014), and supports up to 7 sensors. It is available as part of a kit for $99 on Kickstarter. The kit includes the VERVE, a mini USB to USB cable, seven “sensors” (A force sensor, a push button, a light sensor, a potentiometer, a motion sensor, a magnet sensor, and a touch sensor), two banana clips for the touch sensor, seven cables to connect the sensors to the VERVE unit, and 5 extension blocks. Once the VERVE unit is connected to your computer, and the needed sensors are connected to the VERVE, you can launch the VERVE application to visualize the sensors data in real-time, and assign a mouse or keyboard action based on the sensor’s data level as shown below. There’s also an […]