January 2015 - Page 3 of 11 - CNX Software

January 26, 2015May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 12 Comments

4K Output and Video Playback Capability Tested on 6 ARM based mini PCs and Boards

Since I’ve now got a 4K TV, I’ve decided to test 4K support for six different platforms based on Rockchip, Allwinner, Amlogic, Realtek, HiSilicon, and Mstar processors. For all these platforms I’ll report HDMI 4K output options, user interface resolution, and take close up pictures of the screen while displaying a 4K 1×1 grid picture and video with the image players, and video players such as MX Player or XBMC depending which are available in the firmware. Test Setup and Procedure I’m using LG 42UB820T 42″ UltraHD television with an HDMI cable connected to HDMI 1 port of the TV. Please note that my TV only support 8-bit color depth / YCbCr 4:2:0 which may cause compatibility issues with some boxes, at least the ones based on RK3288 processor, for 2160p 50Hz or 60Hz mode. I’ll take close-up pictures of the screen with a Canon PowerShot A2300HD camera by holding […]

January 26, 2015January 26, 2015 by Jean-Luc Aufranc (CNXSoft) - 17 Comments

Linux 3D GPU Acceleration Demo on Rockchip RK3288 based Firefly Board

Several devices and development boards based on Rockchip RK3288 processor already support Linux, usually with images based on Ubuntu, including Ugoos UM3 / UT3, Open Hour Chameleon, and Firefly-RK3288 among others. What these images lack however, is support for 2D and 3D graphics acceleration with the GPU, and hardware video decoding/encoding with the VPU. But Jas-hacks has made some progress with 3D graphics support. He has managed to add GPU acceleration via EGL/OpenGL ES bringing 3D acceleration to the platform, but 2D support is not there yet, meaning X11 still heavily relies on software rendering. But the implementation is still good enough to run the usual es2gears and glmark2-es2 benchmarks. as well as some WebGL demos in Chromium. Performance is currently underwhelming, with 50 points in glmark-es2, even a bit lower than the score (54 points) I got with ODROID-X board powered by Exynos 4412 SoC with a Mali-400MP4 GPU, […]

January 25, 2015January 9, 2021 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

All HDMI 2.0 Implementations Are not Equal

One of the key changes between HDMI 1.4 and HDMI 2.0 is support for up to 4K @ 60Hz instead of just 4K @ 30Hz, and at first, I thought an HDMI 2.0 capable device would be compatible with HDMI 2.0 TV, and it did not need to look into details. I was wrong. There’s a nice table in Wikipedia that explains the main differences between HDMI 1.4 and HDMI 2.0 and older versions. Other features include YCbCr 4:2:0 (That’s the important bit), Rec. 2020 color space, 32 channel audio, 21:9 aspect ratio, and more. By the way, there’s no such thing as an HDMI 2.0 cable (Source: straight from the horse’s mouth), so if you have a cable that support 4K30, it will work with 4K60 as well. Does HDMI 2.0 require new cables? No, HDMI 2.0 features will work with existing HDMI cables. Higher bandwidth features, such as […]

January 24, 2015January 24, 2015 by Jean-Luc Aufranc (CNXSoft) - 44 Comments

LG 42UB820T 4K UHD TV Review

After several people often asked me about audio pass-through, and 4K video support on mini PCs, with some suggesting adding a donation button to my website, I decided to start a crowdfunding campaign to raise funds for an AV Receiver and a 4K TV by asking for donations and selling some samples I used for review. Thanks to the great help of my readers, I managed to get enough money to buy LG 42UB820T on Lazada for 19,610 Baht including shipping (~$600) via 10% coupon I got in a newsletter, as well Onkyo TX-NR636 7.2 channel receiver in a local shop in Chiang Mai (Sahapanich). I’m still waiting for the speakers, so I’ll start by reviewing the TV. This model is sold as 42UB820V in Europe, and 42UB8200 in Hong Kong and probably other markets. I spent a lot of time studying about 4K TV and AV receiver features, and […]

January 23, 2015 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Intel Education Content Access Point Is Designed for Schools with Unreliable Internet Connectivity and Power

Intel has introduced a new device that stores, manages, and publishes digital content for schools with low or intermittent connectivity and /or power. The device stores training materials in its internal storage, comes with a battery, and can be accessed by up to 50 students simultaneously. Specifications: SoC – Intel Atom Bay Trail-I E3815 Processor @ 1.46GHz with Intel HD graphics System Memory – 2GB DDR3L-1067 Storage – 8GB eMMC, Optional 500GB SATA HDD Connectivity – WiFi 802.11 a/b/g/n/ac, Wired Gigabit Ethernet, Optional 3G, Optional LTE USB – 1x USB 3.0 Misc – System and 3G/LTE LEDs, Factory reset and power buttons Power Supply – 12V/2A Battery – Lithium-ion polymer 7.4v, 4050mAh (up to 5 hours of battery life) Dimensions – 190 x 190 x 30mm Weight – 607 grams The system runs Ubuntu 12.04. The optional 500GB hard drive includes 400GB of preloaded content, and educator can use the remaining […]

January 23, 2015January 23, 2015 by Jean-Luc Aufranc (CNXSoft) - 14 Comments

Ugoos UT3S is an Update to UT3 Android & Ubuntu TV Box with a Fan

Many people like ARM based media player because most of them run Android providing access too many apps available via Google Play Store, a similar experience to what they got used with phones and tablets, and also because they are small, inexpensive, and fanless. However, the latest ARM processors such as Rockchip RK3288, can get really hot, so most of the time CPU frequency needs to be limited to avoid overheating and stability, which reduces performance. Which may be why, Ugoos decided to launch UT3S mini PC, an upgrade to UT3 mini PC with a mini Fan placed on top of a larger heatsink. Ugoos UT3S specifications and look remain very similar to the original model: SoC – Rockchip RK3288 quad core CortexA17 @ 1.80 GHz + Mali-T764 GPU with support for OpenGL ES 1.1/2.0 /3.0, and OpenCL 1.1 System Memory – 2GB to 4GB DDR3 Storage – 16GB or […]

January 23, 2015January 23, 2015 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Vonets VM300 Wi-Fi & Ethernet IoT Board with Mediatek MT7620 Runs OpenWRT

Mediatek MT760 is a recent Wi-Fi SoC found in some Nexx WT3020 routers, and WRTnode development board. Both run OpenWRT and costs $17 to $30 depending on the amount of flash, and ports with the former featuring two Ethernet ports, and the latter access to GPIOs. You could probably open the case of the Nexx routers and solder some wires to get access to GPIO, and you can hack an Ethernet cable for WRTnode, but another options could be Vonets WM300 kit that includes a board with Wi-Fi and Ethernet, a cable for USB / Ethernet connection, headers for GPIOs, and two external antennas for less than $30. An OpenWRT SDK is also provided for the kit. Specifications listed for VM300 board: Processor – Mediatek MT7260N MIPS processor @ 580MHz Storage – 4MB SPI Flash (option: 8MB/16MB) for firmware System Memory – 32MB or 64MB SDRAM Connectivity Wi-Fi Single band […]

January 22, 2015January 23, 2015 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Atmel Introduces Wi-Fi / Bluetooth Combo SoCs for the Internet of Things

Atmel has recently announced two SoCs supporting Wi-Fi and Bluetooth 4.0 that target M2M and IoT applications, namely WILC3000 wireless link controller and WINC3400 network controller which both integrate a power amplifier, LNA, switch and power management unit. WILC3000 and WINC3400 should share the following specifications: MCU – Cortus APS3 32-bit processor ROM/Flash – 256KB instruction/boot ROM (160KB for 802.11 and 96KB for Bluetooth) along with a 768 bits of non-volatile eFuse memory RAM – 420KB instruction RAM (128KB for 802.11 and 292KB for Bluetooth), and a 128KB data RAM (64KB for 802.11 and 64KB for Bluetooth), as well as 160KB shared/exchange RAM (128KB for 802.11 and 32 KB for Bluetooth) Wi-Fi IEEE 802.11 b/g/n RF/PHY/MAC SOC (2.4 GHz) IEEE 802.11 b/g/n (1×1) for up to 72 Mbps Wi-Fi Direct and Soft-AP support Supports IEEE 802.11 WEP, WPA, WPA2 Security, China WAPI security Bluetooth Version 4.0 Low Energy Class 1 […]