Posted on by Karl Johnson - 16 Comments on JGAURORA A5 Review – A Large Build 3D Printer That Works (Mostly) Out of the Box

JGAURORA A5 Review – A Large Build 3D Printer That Works (Mostly) Out of the Box

Karl here and today we are going to look at the JGAURORA A5. I specifically asked Gearbest for this printer. Features and specs looks good. Not to mention that you can go from opening the box to printing in 20 min. Nice large build volume of 305 x 305 x 320mm. Color touch screen. Filament runout sensor. Power Fail feature. Power Fail is so nice. I have lost some long prints due to power going out. I have not lost any for filament because I have always been conscious of it but it’s nice to have peace of mind. The A5 has an assisted leveling feature that is nice. When using this feature there are 5 point that it will go to. One in each corner and one in the center and you adjust the bed. It saves a little time and I believe is standard feature in Marlin now. […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 2 Comments on Qualcomm Snapdragon X24 LTE Cat 20 Modem Supports up to 2Gbps Download Speed (in Theory)

Qualcomm Snapdragon X24 LTE Cat 20 Modem Supports up to 2Gbps Download Speed (in Theory)

Qualcomm can already achieve peak download speed of 1.2 Gbps over 4G cellular network in Snapdragon 845 processor thanks to its Snapdragon X20 LTE modem, but the company has been working on an even faster modem with Snapdragon X24 modem support LTE Cat.20 download speed of up to 2 Gbps. That’s even faster than Gigabit Ethernet, at least in theory, as with all wireless technologies you can only achieve the maximum throughput in the lab, and upload speeds will be lower – but still decent – at up to 316 Mbps. You’d also have to find a Telco that can handle such speeds. Qualcomm X24 cellular modem specifications: LTE Category – 20 Downlink Features 7×20 MHz carrier aggregation Up to 4×4 MIMO on five carriers Maximum 20 spatial streams Full-Dimension MIMO (FD-MIMO) Up to 256-QAM Peak Download Speed – 2 Gbps Uplink Features Qualcomm Snapdragon Upload+ 3×20 MHz carrier aggregation […]

Khadas Edge2 Arm mini PC
Posted on by Jean-Luc Aufranc (CNXSoft) - 3 Comments on CAN32 ESP32 Development Board is Designed for CAN Bus Applications

CAN32 ESP32 Development Board is Designed for CAN Bus Applications

If you want a WiFi + BLE board to play with CAN bus, one option is to go with the versatile Olimex ESP32-EVB Board, but if you need something more compact CAN32 board might be worth a look as the board is specifically designed for projects and testing of the ESP32 in a CAN-BUS environment. CAN32 board hardware specifications: Wireless module – Espressif Systems ESP32-WROOM WiFI + Bluetooth LE module External storage – micro SD slot CAN Bus chip – Texas Instruments SN65HVD230DR CAN-BUS transceiver with sleep mode Expansion Unpopulated headers exposing: SVP/SVN, GPIOs, I2C, UART, GND, 3.3Vm 5.0V 4 larger vias for CAN H and L, 12V (max 15V), and GND Debugging / Programming – micro USB port via Silicon Labs CP2102N USB to UART Misc – C&K soft-touch low-profile buttons for reset and boot; 4x LEDs for power, ESP, UART Tx/Rx Power Supply 5V via micro USB port […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 15 Comments on Human Readable Decoding of /proc/cpuinfo for Arm Processors

Human Readable Decoding of /proc/cpuinfo for Arm Processors

One of the most common way to get CPU information is to check the content of /proc/cpuinfo. For example, this is the output I get from running the command on NanoPi NEO (Allwinner H3) board:

Many fields are self-explanatory, but what about CPU implementer and CPU part numbers? Those are values stored in Arm’s CPUID Base Register, and 0x41 looks up to Arm implementer, while 0xc07 refers to Cortex A7. But I had to look it up to find out. One solution would be to decode those values in the kernel, but the developers won’t do that probably because it may break user-space programs that rely on hexadecimal values. So instead, Riku Voipio decided to write and submit a patch for lscpu program found in util-linux package. The patch has been merged so the new ID mapping feature should be supported in util-linux 2.32 and greater. In the meantime, […]

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Arm’s Project Trillium Combines Machine Learning and Object Detection Processors with Neural Network Software

Arm’s Project Trillium Combines Machine Learning and Object Detection Processors with Neural Network Software

We’ve already seen Neural Processing Units (NPU) added to Arm processors such as Huawei Kirin 970 or Rockchip RK3399Pro in order to handle the tasks required by machine learning & artificial intelligence in a faster or more power efficient way. Arm has now announced their Project Trillium offering two A.I. processors, with one ML (Machine Learning) processor and one OD (Object Detection) processor, as well as open source Arm NN (Neural Network) software to leverage the ML processor, as well as Arm CPUs and GPUs. Arm ML processor key features and performance: Fixed function engine for the best performance & efficiency for current solutions Programmable layer engine for futureproofing the design Tuned for advance geometry implementations. On-board memory to reduce external memory traffic. Performance / Efficiency – 4.6 TOP/s with an efficiency of 3 TOPs/W for mobile devices and smart IP cameras Scalable design usable for lower requirements IoT (20 […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 2 Comments on Particle Unveils Three nRF52840 Bluetooth 5 Boards: Argon (WiFi), Boron (LTE), and Xenon, as well as Particle Mesh Technology

Particle Unveils Three nRF52840 Bluetooth 5 Boards: Argon (WiFi), Boron (LTE), and Xenon, as well as Particle Mesh Technology

In the last year or so, Bluetooth has gotten an upgrade with the release of Bluetooth 5. The new protocol works on several existing platforms, but if you want support for the full set of Bluetooth 5 features such as longer range and higher bandwidth, we’ve seen you need a recent chip such as Nordic Semi nRF52840. However so far, AFAIK you had to buy Nordic Semi own development kit for play with nRF52840, and now Particle has announced not one, but three low cost development boards powered by nRF52840 chip starting at just $9, and supporting their newly announced Particle Mesh technology. So for some reasons, it appears they did not go with Bluetooth Mesh. Particle Xenon – Bluetooth 5 + Mesh Xenon is the cheapest model with the following specifications: SoC – Nordic Semiconductor nRF52840 Arm Cortex-M4F 32-bit processor @ 64MHz with 1MB flash, 256KB RAM Storage –  […]

AAEON Intel Arc
Posted on by Jean-Luc Aufranc (CNXSoft) - 2 Comments on Samsung Exynos 7885 Processor Launched for Mid-Range LTE Smartphones

Samsung Exynos 7885 Processor Launched for Mid-Range LTE Smartphones

After unveiling Exynos 7872 Series5 hexa core processor in January, Samsung has now introduced a higher end Series7 octa-core processor with Cortex A73 and 53 cores, and a Mali-G71 MP2 GPU named Exynos 7885. The new processor also supports 18:9 Full HD+ displays, LTE Cat 12 for download up to 600 Mbps, dual camera, 4K 30 fps video decoding/encoding, and comes with an LPDDR4x memory interface. Samsung Exynos7 7885 processor specifications: CPU – Dual-core Cortex-A73 @ up to 2.2 GHz, and Hexa core Cortex A53 @ up to 1.6GHz GPU – Arm Mali-G71 MP2 Memory I/F – LPDDR4x Storage I/F – eMMC 5.1, SD 3.0 Display – Up to WUXGA (1920×1200), Full HD+ (2220×1080) LTE Modem – LTE Cat.12 3CA 600Mbps (DL) / Cat.13 2CA 150Mbps (UL) Connectivity – Wi-Fi 802.11ac Dual-band, Bluetooth 5, FM Radio GNSS –  GPS, GLONASS, BeiDou, Galileo Camera –  Rear 21.7MP, Front 21.7MP, Dual camera: 16MP+16MP […]

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Tock Open Source OS for Secure IoT Systems Runs on Arm Cortex-M Microcontrollers

Tock Open Source OS for Secure IoT Systems Runs on Arm Cortex-M Microcontrollers

We already have a fair share of open source operating systems running on Arm Cortex-M microcontrollers with FreeRTOS, mbed OS, Zephyr OS, RIOT, and many others. Earlier this morning, as I wrote about the Embedded Linux and IoT Summit 2018, I discovered you can now also add Tock to the list, with the operating system specifically designed for (secure) IoT on Arm Cortex-M MCUs. According to the abstract, Tock aims to enable more secure and extensible IoT systems by using a language sandbox and hardware enforced mechanism to isolate third-party and other untrusted code in the system. The operating systems is comprised of three components: A trusted core kernel written in Rust language with a HAL, scheduler and platform-specific configuration Capsules compiled with the kernel and use Rust’s type and module systems for safety; typically used for drivers & virtualization layers User-space processes using the MPU for hardware protection at runtime; […]

Khadas VIM4 SBC