open source News - Page 79 of 101 - CNX Software

September 27, 2015July 25, 2024 by Jean-Luc Aufranc (CNXSoft) - 22 Comments

Using USB123 USBee AX Pro $5 USB Logic Analyzer with PulseView in Linux

I recently wrote about an ultra low cost USB logic analyzer called USB123 USBee AX Pro, which I bought for $9.58 on DX, but I was later informed it also goes for $5.44 on Aliexpress including free shipping to most countries, and a few dollars extra for shipping to some other countries. Nevertheless, I’ve now received it, and instead of testing it with a closed source (and cracked) Windows software, I installed and ran PulseView open source graphical interface for sigrok, which I previously tested on UNI-T UT61E digital multimeter. The package includes USBee AX PRO mini logic analyzer, 10 dupont wires for 8 channels (digital only) and 2 ground pins, as well as a mini USB to USB cable for connection to a computer. The instructions to use the logic analyzer can be found on Sigrok Wiki. My computer runs Ubuntu 14.04, but Sigrok and PulseView can also be […]

September 24, 2015September 25, 2015 by Jean-Luc Aufranc (CNXSoft) - 20 Comments

Brotli Compression Algorithm Combines High Compression Ratio, and Fast Decompression

After Zopfli, Google has now announced and released Brotli, a new compression algorithm to make the web faster, with a ratio compression similar to LZMA, but a much faster decompression, making it ideal for low power mobile devices. Contrary to Zopfli that is deflate compatible, Brotli is a complete new format, and combines “2nd order context modeling, re-use of entropy codes, larger memory window of past data and joint distribution codes” to achieve higher compression ratios. Google published some benchmark results comparing Brotli to other common algorithms. Since the company aims to make the web faster, the target is to decrease both downloading time (high compression ratio), and rendering time (fast decompression speed), and Brotli with a quality set to 11 is much better than competitor once both parameters are taken into account. As you’d expect the source code can also be pulled from Github. So I gave it a […]

September 23, 2015September 24, 2015 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

LeMaker Hikey 96Boards Development Board Comes with 1 to 2GB RAM, Sells for $75 and Up

Hikey was the first 64-bit ARM development board compliant with 96Boards specifications, and supported by Linaro. Availability always seemed to be an issue however, and pricing was set to $129. But Lemaker, the makers of Banana Pi boards, recently joined Linaro, and they’ve built a lower cost version of the Hikey board, still featuring Hisilicon Kirin 620 octa-core ARM Cortex-A53 processor, but with 1GB and 2GB RAM versions, priced respectively at $75 and $99. LeMaker Hikey board specifications: SoC – HiSilicon Kirin 620 octa core Cortex A53 processor @ 1.2 GHz with ARM Mali-450MP4 GPU System Memory – 1 or 2 GB LPDDR3 @ 800 MHz Storage – 8GB eMMC + micro SD slot Video Output / Display – HDMI up to 1080p, MIPI-DSI interface Connectivity – 802.11 a/b/g/n Wi-Fi, Bluetooth 4.1 LE (WL1835MOD module) USB – 2x USB 2.0 host ports, 1x micro USB OTG Camera – MIPI CSI […]

September 18, 2015May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

Own-Mailbox is a Tiny, Secure, and Open Source Hardware Mail Server (Crowdfunding)

Email encryption has been around for a while, but virtually nobody uses it, because it’s quite complex to setup, and your recipients email clients, apps or browsers must also support encryption. Revolutek aims to simplify the setup and usage of encrypted email with their “Own-Mailbox” based on open source hardware and software technology. The hardware solution could have been based on the Raspberry Pi board in theory, but the popular board requires a closed source binary to boot, documentation about part of the hardware is lacking, and once the enclosure, and required accessories are included the price would have been higher. So instead they decided to design their own hardware based on an Allwinner processor: SoC – Allwinner A13 Cortex A8 processor @ 1GHz System Memory – 256 MB RAM Storage – (micro?) SD card slot with 16GB card included Connectivity – 10/100M Ethernet (Lan9500A controller) USB – USB host […]

September 7, 2015September 7, 2015 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Numato Opsis is an Open Source Hardware FPGA Board with 6 Video Inputs and Outputs (Crowdfunding)

Numato Lab is a Bangalore based company specializing in MCU and FPGA boards such as the low cost Mimas V2 Spartan 6 board, and their latest board is also based on a Spartan 6 FPGA, but a more powerful part with LX45T FPGA, and targets video applications with two HDMI inputs, two HDMI outputs, one DisplayPort output, and one DisplayPort input, among other interfaces. Instead of simply listing specifications of Numato Opsis, I’ll reproduce a table – drawn by Numato – showing Opsis features and specifications against some other FPGA video platforms. Opsis miniSpartan6+ Mixxeo Atlys Nexys Anvyl CVK 2.0 AVDB Make Numato ScarabHardware M‑Labs Digilent Digilent Digilent TED OmniTek License Open Open Open Closed Closed Closed Closed Closed Cost USD $349 USD $105 no stock USD $419 USD $499 USD $539 USD $2,995 USD $999 FPGA Fab Xilinx Xilinx Xilinx Xilinx Xilinx Xilinx Xilinx Altera Family Spartan‑6 Spartan‑6 Spartan‑6 Spartan‑6 Artix‑7 Spartan‑6 Spartan‑6 Cyclone V Part LX45T […]

August 21, 2015 by Jean-Luc Aufranc (CNXSoft) - No Comments

Orchard is an Open Source Hardware Multi-Radio IoT Board Used to Learn Coding, Hardware Design and Manufacturing

Sutajio Ko-Usagi’s wiki is the place where you find documentation for open source hardware projects such as Novena laptop or Fernvale IoT board. There’s another IoT board supporting 900 MHz and Bluetooth radios called Orchard. Orchard board specifications: MCU – Kinetis MKW01 ARM Cortex-M0+ MCU @ 48 MHz with 128KB flash, 16KB RAM Connectivity 900 MHz radio with +13dBm transmit power (for long-range applications) Bluetooth LE radio (for short-range, low power connection to IP gateways) Display – 128×64 OLED Sensors – 3-axis Accelerometer, microphone sensor Debugging – FTDI serial port header, SWD provisioning & debug header Misc Captouch button controller WS2812B LED strip driver Lithium ion battery solution Gas gauge for accurate battery life determination Charging solution that can support high-capacity batteries Integral 5V boost The hardware files and ChibiOS 3.0 firmware source code are all available. The board does not appear to be for sale, but instead students taking […]

August 20, 2015August 20, 2015 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

MinnowBoard Turbot SBC Gets an Intel Atom E3826 Dual Core Processor, FCC & CE Certification

MinnowBoard MAX launched las year as a low cost board based on Intel Bay Trail-I single or dual core processor, and was mostly targeting developers of embedded systems and hobbyists, but could not be used by OEMs as it lacked FCC & CE certifications. ADI Engineering designed a MinnowBoard compatible board named MinnowBoard Turbot with a faster Intel Atom E3826 dual core processor, FCC & CE certifications, and various other hardware modifications bringing improved HDMI, a better voltage regulator, and populating several connectors. MinnowBoard Turbot specifications: SoC – Intel Atom E3826 dual-core processor @ 1.46 GHz (7W TDP) System Memory – 2GB DDR3L 1333 MT/s (Soldered) – Options: 1GB, or 4GB DDR3L Storage – 1x Micro SD card slot, 1x SATA2 3Gb/sec, 8 MB SPI Flash for firmware (Tianocore UEFI, Coreboot / SeaBIOS) Video & Audio Output – micro HDMI connector Connectivity – 10/100/1000M Ethernet RJ-45 connector USB – 1x […]

August 12, 2015August 12, 2015 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

$39 Beaglebone Green Loses HDMI and DC Jack, Gains Grove Connectors

The original BeagleBone launched in 2011 $89, then Beagleboard.org released an updated version with HDMI, a faster processor, and more RAM called BeagleBone Black for $45 in 2013, possibly as a competitor to the Raspberry Pi, and since then the price has bumped up to $55 because of a larger eMMC flash. There’s now a new version – and a different color – with BeagleBone Green selling for $39 on SeeedStudio with shipping starting on August 20, 2015. BeagleBone Green board specifications: SoC – Texas Instruments Sitara AM3358BZCZ100 Cortex A8 @ 1 GHz with NEON + PowerVR SGX530 GPU System Memory – 512 MB DDR3L @ 800 MHz Storage – 4GB eMMC + micro SD slot USB Access to USB0, Client mode via Micro USB Access to USB1, Type A Socket, 500mA LS/FS/HS Serial Port – UART0 via 6-pin 3.3V TTL header (populated) Ethernet – 10/100M Ethernet , RJ45 Expansion […]