Wintel Pro CX-W8 Cherry Trail mini PC Sells for $85

I reviewed Wintel W8 mini PC powered by an Intel Atom Z3735F last year, although since the model could dual boot Windows 8.1 and Android 4.4 I mostly focused my review on the Android part. There’s now an upgraded model running Windows 10 only, based on Intel Atom x5-Z8300 quad core Cherry Trail processor, and very much the same interfaces except one of the USB 2.0 ports has been upgraded to USB 3.0. Wintel Pro CX-W8 has very similar same specifications to other Cherry Trail mini PCs available on the market: SoC – Intel Atom x5-Z8300 “Cherry Trail” quad core processor @ 1.44 GHz (Bust freq: 1.84 GHz) with Intel Gen8 HD graphics (2W SDP) System Memory –  2 GB Storage – 32 GB eMMC + micro SD slot Video Output – HDMI Audio I/O – HDMI, 3.5mm microphone jack Connectivity – 10/100M Ethernet, 802.11 b/g/n Wi-Fi, and Bluetooth 4.0 […]

Raspberry Pi 3, ODROID-C2 and Pine A64+ Development Boards Comparison

Raspberry Pi 3 and hardkernel ODROID-C2 launched the same day, and together with Pine A64/A64+, are the only ultra low cost (<$40) 64-bit ARM development boards available or soon-to-be available, so I’ve decided to make a comparison of the three boards the same way I did with ~$10 boards with a Raspberry Pi Zero, C.H.I.P, and Orange Pi One comparison. I’ve used features of Pine A64+ instead of Pine A64 since features and price are closer to the other two boards. Text highlighted in green means a board is clearly better than the other two for a given features, while a red highlight means it’s the weakest of the three. Raspberry Pi 3 ODROID-C2 Pine A64 Plus Processor Broadcom BCM2837 quad core Cortex A53 processor @ 1.2 GHz(4x ~2760 DMIPS) Amlogic S905 quad core Cortex A53 processor @ 2.0 GHz(4x ~4600 DMIPS) Allwinner A64 quad core Cortex A53 processor @ […]

ArmSoM CM5 - Raspberry Pi CM4 alternative with Rockchip RK3576 SoC

GNU Complexity Command Line Tool Measures Complexity of C Code

GNU complexity is a command line tool that computes a complexity measure of C source code, similar to pmccabe, but with a different method of calculating results with short functions scoring lower than pmccabe and highly nested functionality can score considerably higher. It can be useful to locate suspicious areas in unfamiliar code, get an idea of the efforts required to either understand the code or test it, or self-assess your own code. Bruce Korb, the maintainer, has just released version 1.5 with some bug fixes, so I’ve given it a quick try. We’ll need to get the code, build and install it first:

The user’s manual provides some insights and an example, which I’ve used against a directory in Linux source code:

The resulting table shows six information per line: the computed score, the number of lines between the opening and closing curly braces (ln-ct), the number […]

64-bit ARM (Aarch64) Instructions Boost Performance by 15 to 30% Compared to 32-bit ARM (Aarch32) Instructions

Yesterday was quite an eventful day with the launch of two low cost 64-bit ARM development boards, namely Raspberry Pi 3 and ODROID-C2, and as usual there were some pretty interesting discussions related to the launch of the boards in the comments section. One of the subject that came is that while Raspberry Pi 3 board is using a 64-bit processor, the operating systems are still compiled with 32-bit instructions (Aarch32) and even optimized for ARMv6, and they intend to keep it that way according to Eben Upton interview: Eben readily admits that not all the capabilities of the new parts are going to be used at launch, however. “Although it is a 64‑bit core, we’re using it as just a faster 32-bit core,” he reveals about the Pi 3’s central processing unit. “I can imagine there’d be some real benefits [to 64-bit code]. The downside is that you do […]

Geniatech ATV195e 4K TV Stick Features Amlogic S905 Processor, 802.11ac WiFi

While there are way too many Amlogic S905 TV boxes to keep up, the number of TV sticks based on the processor is fairly low, and until today I had only heard about Guleek A8 a few months ago, but I can’t even see it for sale anywhere.Potential reason include people have released TV stick are not that convenient, or electronic design houses had issues to cool the thing down, as we’ve seen even some full-size TV boxes have issues with cooling. Nevertheless, Geniatech has designed their own Amlogic S905 TV stick called ATV195e with 1GB RAM, 8GB flash, and 802.11ac WiFi. Geniatech ATV195e preliminary specifications: SoC –  Amlogic S905 quad core ARM Cortex-A53 @ up to 2.0GHz with penta core Mali-450MP GPU up to 750MHz System Memory – 1GB DDR3 Storage – 8GB eMMC flash (2 to 32GB on-request) Video Output – HDMI 2.0 up to 4K @ 60Hz […]

ODROID-C2 64-Bit ARM Development Board is Now Available for Purchase for $40

ODROID-C2 is a quad core 64-bit ARM development board based on Amlogic S905 processor with 2GB RAM that was planned to launch in early March, but maybe unsurprisingly, Hardkernel decided to launch their latest board, the very same day as Raspberry Pi 3 launch. We already knew the specifications, but it’s always useful to mind ourselves of the details: SoC – Amlogic S905 quad core cortex-A53 processor @ 2.0 GHz with 3+2 cores Mali-450 GPU System Memory – 2GB DDR3 SDRAM Storage – eMMC module socket with 8, 16, 32, or 64GB module by Toshiba or Sandisk + micro SD slot supporting UHS-1 SD cards. Video Output – HDMI 2.0 up to 4K @ 60 Hz Connectivity – Gigabit Ethernet (Realtek RTL8211F) USB – 4x USB 2.0 host ports + micro USB OTG port Expansion Header 40-pin header with GPIO, I2C, UART, and ADC ; All I/Os are 3.3V, except […]

Rockchip RK3568/RK3588 and Intel x86 SBCs

Raspberry Pi 3 Board is Powered by Broadcom BCM2837 Cortex A53 Processor, Sells for $35

Raspberry Pi 3 board was first found on the FCC website, and thanks to various other leaks we had a pretty good idea of the board specifications including a Broadcom 64-bit ARM processor coupled with 1GB RAM, WiFi and Bluetooth, as well as basically the same features and ports as Raspberry Pi 2 Model B. But with the fourth anniversary of the Raspberry Pi Model 1 board, Raspberry Pi 3 has now officially been launched, and you can now purchase the board for $35. Raspberry Pi 3 specifications: SoC – Broadcom BCM2837 64bit ARMv8 quad core Cortex A53 processor @ 1.2GHz with dual core VideoCore IV GPU @ 400 MHz supporting OpenGL ES 2.0, hardware-accelerated OpenVG, and 1080p30 H.264 high-profile decode. Capable of 1Gpixel/s, 1.5Gtexel/s or 24GFLOPs with texture filtering and DMA infrastructure System Memory – 1GB LPDDR2 Storage – micro SD slot Video & Audio Output – HDMI 1.4 […]

Hubpixed is a Neat and CableFree USB Hub for the Raspberry Pi Zero (Crowdfunding)

While the Raspberry Pi Zero is not exactly broadly available, there are still several tenths of thousands who own, and I’ve seen several use a USB to OTG adapter combined to a USB hub to add USB devices such as a WiFi dongle, or/and keyboard. This works, but it’s quite messy. That’s why Vikas Shukla created Hubpixed USB hub for the Raspberry Pi that does not require any cables and cleverly uses the test pins on the back of the board for USB data and power. The board’s spring pins are the only electrical connections between Raspberry Pi Zero and the hub, with both boards attached with spacers, screws and bolts using the four mounting holes of RPi0. Vikas also showed the hub in action with a USB WiFi dongle. I’m not sure how it would fare with a USB hard drive however. Hubpixed is on Kickstarter, and has already exceeded […]

Boardcon Rockchip RK3588S SBC with 8K, WiFI 6, 4G LTE, NVME SSD, HDMI 2.1...