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Mitigating a DoS attack with GoAccess and Cloudflare

Cloudflare Under Attack Mode

In this off-topic post, I’m going to discuss some behind-the-scenes “fun” that may happen when managing the web server used to host the CNX Software website. From time to time, the server becomes unreachable, but I can still access its console, and notice a very high CPU load (over 100) on a VPS with four cores, while the CPU load is typically 0.5 to 2 under normal circumstances. That’s usually due to a DoS (denial of service), DDoS (distributed denial of service), or some bug I can’t identify. An easy way to solve this issue is to log in to Cloudflare and set the “Under Attack Mode” to on. It will show all visitors a JavaScript challenge the first time they visit the website, and the CPU usage typically drops back to normal level within a minute or so. That means I can access my website and so do regular [...]

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Waveshare RoArm-M2 ESP32 robotic arms offer four degrees of freedom, various servo options

RoArm M2 Series Robotic Arm

Waveshare has recently launched the RoArm-M2-S and RoArm-M2-Pro ESP32 robotic arms with four degrees of freedom, or 4-DOF for short. The main difference is that the RoArm-M2-S is equipped with standard servos, while the RoArm-M2-Pro features all-metal ST3235 bus servos, adding more durability and performance. Designed for educational and robotics applications, the 4-DOF RoArm-M2 is sturdy yet lightweight, built using carbon fiber and aluminum alloy. It can handle payloads up to 0.5kg and has a workspace diameter of 1 meter. The arm offers high precision with a 12-bit magnetic encoder and dual-drive technology for improved torque and stability. On top of that, it features a 12-bit magnetic encoder and dual-drive technology for improved torque and stability. Other features include a 360° omnidirectional base and support for both wireless (WiFi, ESP-NOW) and wired (USB) control. These features make this device suitable for various applications including industrial automation, education, research, and DIY robotics projects. Waveshare [...]

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Mercury X1 wheeled humanoid robot combines NVIDIA Jetson Xavier NX AI controller and ESP32 motor control boards

Mercury X1 wheeled humanoid robot

Elephant Robotics Mercury X1 is a 1.2-meter high wheeled humanoid robot with two robotic arms using an NVIDIA Jetson Xavier NX as its main controller and ESP32 microcontrollers for motor control and suitable for research, education, service, entertainment, and remote operation. The robot offers 19 degrees of freedom, can lift payloads of up to 1kg, work up to 8 hours on a charge, and travel at up to 1.2m/s or about 4.3km/h. It’s based on the company’s Mercury B1 dual-arm robot and a high-performance mobile base. Mercury X1 specifications: Main controller – NVIDIA Jetson Xavier NX CPU – 6-core NVIDIA Carmel ARM v8.2 64-bit CPU with 6MB L2 + 4MB L3 caches GPU – 384-core NVIDIA Volta GPU with 48 Tensor Cores AI accelerators – 2x NVDLA deep learning accelerators delivering up to 21 TOPS at 15 Watts System Memory – 8 GB 128-bit LPDDR4x @ 51.2GB/s Storage – 16 [...]

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ASUSTOR Flashstor Gen2 NAS features AMD Ryzen Embedded V3C14, 10GbE networking, up to 12x NVMe SSD sockets

AMD Ryzen V3C14 NAS

ASUSTOR Flashstor 6 Gen2 and Flashtor 6 Pro Gen2 are NAS systems based on AMD Ryzen Embedded V3C14 quad-core processor with up to two 10GbE RJ45 ports and taking up to 6 or 12 M.2 NVMe SSDs respectively. The Flashstor Gen2 models are updated to the ASUSTOR Flashtor NAS launched last year with similar specifications including 10GbE and up to 12 M.2 SSDs, but based on a relatively low-end Intel Celeron N5105 quad-core Jasper Lake processor. The new Gen2 NAS family features a more powerful AMD Ryzen Embedded V3C14 SoC, support for up to 64GB RAM with ECC, and USB4 ports. The downside is that it lacks video output, so it can’t be used for 4K/8K video consumption like its predecessor. Flashstor Gen2 NAS specifications: SoC – AMD Ryzen Embedded V3C14 quad-core/8-thread processor @ 2.3/3.8GHz; TDP: 15W System Memory Flashstor 6 Gen2 (FS6806X) – 8 GB DDR5-4800 Flashstor 12 Pro [...]

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SoundSlide capacitive touch USB-C adapter aims to ease volume control on laptops

USB-C capacitive touch volume control

SoundSlide is an open-source hardware USB-C adapter that adds a capacitive touch interface to your laptop or keyboard PC in order to control the volume without having to reach out to the volume keys on the keyboard that may require Alt or Fn presses. SoundSlide is meant to be more intuitive than pressing keys and works without drivers with macOS, Windows, and Linux. At just 20.9 x 6.9 x 3.5 mm in size excluding the USB Type-C port, you can leave it connected to your laptop when you move around or put the laptop in your backpack. The SoundSlide relies on the touch interface from the Microchip SAM D11 Arm Cortex-M0+ microcontroller, and the company behind the project – Drake Labs – has made the firmware, schematics (PDF/WebP), and a command-line interface written on Go available on GitHub. You can check out how it works on a laptop in the [...]

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MYiR Tech MYC-LR3576 Rockchip RK3576 LGA SoM offers 6 TOPS NPU and 8K video support for AIoT applications

MYC LR3576 SOM as Controller Board

MYiR Tech MYC-LR3576 is a system-on-module (SoM) based on Rockchip RK3576 octa-core Cortex-A72/A53 SoC with a 6 TOPS NPU and 8K video support suitable for AIOT applications that powers the MYD-LR3576 development board. The SoM supports up to 8GB of LPDDR4X RAM and 64GB of eMMC storage, along with a 32Kbit EEPROM. Connectivity options include dual Gigabit Ethernet ports, USB 3.2, and more. For multimedia, it supports HDMI, DisplayPort, eDP, MIPI-DSI, and MIPI CSI interfaces, and up to 8K video decoding/4K video encoding. The MYC-LR3576 also offers several audio I/O and multiple GPIO and I2C interfaces suitable for embedded systems. The MYD-LR3576 development board gives access to dual Gigabit Ethernet ports, Wi-Fi and Bluetooth support, HDMI, Mini DisplayPort, USB 3.0 ports, and GPIO headers. It also supports MIPI camera modules and a 10.1-inch LCD module and provides full access to the SoM’s features. Previously we have written about various development [...]

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216MHz GigaDevice GD32G5 Cortex-M33 MCU features analog interfaces and accelerators for industrial applications

Gigadevice GD32G5 Arm Cortex M33 MCU

Starting with the GD32G553 SKUs, the 216 MHz GigaDevice GD32G5 high-performance Arm Cortex-M33 microcontroller family features 256KB to 512KB of embedded Flash with dual-bank Flash support, 128KB of SRAM, and a range of hardware accelerators including a DSP, single-precision FPU, a trigonometric function accelerator (TMU), and other hardware acceleration units, filter algorithms (FAC) and Fast Fourier Transform (FFT). Designed for industrial applications, the GD32G5 microcontrollers also offer a wide range of digital and analog interfaces and enhanced security capabilities suitable for digital power systems, charging stations, energy storage inverters, frequency converters, servo motors, and optical communication. GigaDevice GD32G5 specifications: MCU Core – Arm Cortex-M33 Armv8-M core clocked at up to 216MHz with DSP instruction set and single-precision FPU; up to 316 DMIPS, CoreMark score: 694. Memory/Storage 128KB SRAM (80KB SRAM0 + 16KB SRAM1 + 32KB TCMSRAM) 256KB to 512KB on-chip flash, QSPI interface for external storage External memory controller (EXMC) [...]

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AAEON FWS-2370 network appliance features Intel Atom Parker Ridge/Snow Ridge processor, up to 14 Ethernet ports

FWS-2370 Front panel

The FWS-2370 is a network appliance powered by the Intel Atom C Series “Parker Ridge” or P Series “Snow Ridge” processor family (Atom C5315 by default), tailored for SD-WAN and uCPE applications. It incorporates Intel QAT and Intel VT-d/VT-x to accelerate encryption, decryption, and virtualization tasks. The system supports up to 64GB of DDR4 memory (ECC/Non-ECC) through dual SODIMM slots and offers onboard eMMC storage options up to 128 GB. Networking capabilities include four 2.5GbE RJ-45 ports (Intel I226-V), four gigabit Ethernet RJ-45 ports (Marvell 88E1543), and four 10GbE SFP+ ports, with optional PoE af/at support for enhanced deployment flexibility. For connectivity, the FWS-2370 features two M.2 B-Key slots for 5G/LTE modules, one M.2 E-Key slot for Wi-Fi, and two Mini Card slots with SIM support. This expansive configuration ensures seamless wired and wireless networking. Designed to manage high data throughput and multi-threaded workloads, the FWS-2370 is ideal for applications [...]

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ESP32 Rainbow is an open-source, ESP32-S3-powered ZX Spectrum single board computer (Crowdfunding)

ESP32 Rainbow

Retrocomputing enthusiasts will be delighted to learn that a new ZX Spectrum replica is on the market: the ESP32 Rainbow. The single board computer swaps the Zilog Z80 for an ESP32-S3 microcontroller chip running an emulator, bringing the classic 80s computer back to life with a modern twist. It features a built-in color display, a microSD card slot for storage, a built-in touch keyboard in the ZX Spectrum style, and a USB Type-C port for power and data. The keyboard was recreated using full-color UV printing and is the most true-to-life component of the ESP32-S3-based ZX Spectrum single board computer. The touch keys won’t likely offer the best typing experience but that is reminiscent of the original ZX Spectrum. A lovely cherry on top is that the onboard USB-C port supports HID and the device can be used as a keyboard on another computer. The ZX Spectrum is one of [...]

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SolidRun unveils HummingBoard i.MX8M IIOT SBC and the IIOT-200-8M Gateway for Edge AI and industrial IoT applications

HummingBoard i.MX8M IIOT

SolidRun has recently introduced HummingBoard i.MX8M IIOT SBC and IIOT-200-8M Gateway built around the NXP i.MX 8M Plus Edge AI processor. Designed for IIoT and HMI applications the SBC hosts the NXP i.MX 8M Plus SOM which gives access to various connectivity options, including dual Gigabit Ethernet, Wi-Fi/Bluetooth, CAN-FD, RS232/RS485, and audio. Additionally, it has support for industrial protocols such as Modbus and MQTT, making it suitable for factory automation and smart energy projects. Based on the HummingBoard i.MX8M IIOT SBC, the IIOT-200-8M Gateway features a DIN-rail mountable design, which sacrifices some I/O interfaces to meet the demands of harsh deployment environments. Both products support Industrial temperature ranges, fanless construction, and compact dimensions, making them reliable choices for demanding applications like industrial automation, predictive maintenance, and remote monitoring. HummingBoard i.MX8M IIOT SBC Specifications SoC – NXP i.MX 8M Plus AI SoC CPU Quad-core Arm Cortex-A53 processor @ up to 1.6 GHz [...]

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Black Friday and Cyber Monday 2024 – International deals and coupons

Banggood Black Friday Mega Deals

While Black Friday and Cyber Monday used to be a US-only event, it changed many years ago, and we’ve been writing about international Black Friday and Cyber Monday deals and coupon codes since 2014, since a large portion of our audience cannot benefit from promotions on Amazon’s Black Friday and Cyber Monday events that will take place from November 21 until December 2 this year. So I’ve gathered some international Black Friday and Cyber Monday 2024 deals and discount coupon codes from relevant manufacturers and popular online stores such as Aliexpress, Banggood, and others. Aliexpress Black Friday and Cyber Monday event Aliexpress’ Black Friday and Cyber Monday 2024 event has already started. There are three periods: Nov 19-21 PST – Warm Up event where users can find and add items to the cart before purchasing during the main event. Nov 22-30 PST – “On Sale” event with discounts up to [...]

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The first Android 16 developer preview is out (much) earlier than expected

Android 16 developer preview

Google releases a new Android version every year, and while the first Android 15 developer preview was released this year in February, the company has already announced the first Android 16 developer preview just a couple of months after the official release of Android 15 on AOSP in an “effort to drive faster innovation in apps and devices”. More specifically, Google plans to release two Android APIs next year: a major SDK release in Q2 2025 instead of Q3 followed by a minor SDK release in Q4 2025 that won’t include behavior changes that may require changes in apps, but only pick up feature updates, optimizations, and bug fixes. The change was mostly made to better accommodate the device launch schedule of smartphone manufacturers. That almost means many more changes are expected between the preview and the beta release. As of now, Google has only announced a few new features [...]

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PCBWay: Your One-Stop Shop for Electronics Manufacturing from Design to Production (Sponsored)

PCBWAY PCB electronics manufacturing

PCBWay, founded in 2013, is a global electronics manufacturing services company driven by customer value. With 5 factories in Shenzhen China (2 offering PCB services, 2 offering PCBA services, and 1 offering CNC machining, sheet metal, and injection molding services), we are able to leverage advanced electronics technology, component resources, experienced technicians, and more. We also work with a number of manufacturers in Shenzhen and other cities to support products beyond our own capabilities. PCBWay has a long history of providing manufacturing support and design advice based on our customers’ products, and we continue to provide our customers with printed circuit boards, components, PCB assembly, molding services, electronic assemblies, contract manufacturing, etc. from design to mass production. Today, multiple technology trends are driving PCB adoption. The Internet of Things (IoT) and Artificial Intelligence (AI), combined with the development of 5G systems, have opened up a whole new level of connectivity [...]

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DFRobot EDGE102-DMX512 lighting controller combines ESP32-S3 MCU and DMX512 protocol chip

EDGE102 DMX512 Lighting Programming Controller

DFRobot’s EDGE102-DMX512 is a DMX512 lighting programming controller based on ESP32-S3 wireless MCU designed for efficient management of stage, theater, and venue lighting. With integrated WiFi and Bluetooth, the controller supports wireless programming and control, simplifying the setup of advanced lighting systems. It offers RS485 (master/slave modes) interfaces, I2C, UART, and GPIO pins for compatibility with a wide range of sensors and boards. This controller enables automation through sensor integration, supporting devices such as infrared detectors, sound level meters, and laser sensors. Its eight optically isolated industrial switch inputs ensure seamless compatibility with PNP sensors, allowing lighting effects to respond automatically to environmental inputs. By reducing dependence on manual DMX consoles, it is well-suited for automated lighting in theaters, stages, and commercial venues. EDGE102-DMX512 specifications: SoC – Espressif ESP32-S3 CPU – Dual-core Tensilica LX7 up to 240 MHz with vector instructions for AI acceleration Memory – 512 KB of internal [...]

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UP 710S – A slim, credit card-sized Intel N97 development board with M.2 E-Key WiFi socket and GPIO, I2C, SPI, and COM wafers

UP 710S Intel N97 development board

AAEON’s UP 710S is a credit card-sized Intel N97 SBC and development board with an M.2 E-Key socket for a WiFi and Bluetooth module, and similar interfaces such as gigabit Ethernet, USB 2.0, USB 3.0, and  HDMI outputs as found in Raspberry Pi boards. It’s very similar to the UP 7000 SBC with Intel N50, N97, or N100 CPU, but it’s designed to be slimmer so the 40-pin Raspberry Pi-compatible header has been replaced by 1mm pitch wafers exposing GPIO, I2C, SPI, and serial (COM) interfaces. UP 710S specifications: Alder Lake-N SoC Default – Intel Processor N97 quad-core  processor up to 3.6 GHz with 6MB cache, 24EU Intel UHD Graphics Gen 12 @ 1.2 GHz; TDP: 12W Options – Intel N50, N100, N200 System Memory – Up to 8GB LPDDR5 Storage Up to 128GB eMMC flash 256Mbit flash for the BIOS/UEFI Video Output – HDMI 1.4b video output up to 4Kp30 [...]

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Raspberry Pi SSD Kit and Class A2 microSD cards review with Raspberry Pi 5

Raspberry Pi SSD Kit Class A2 MicroSD card review

Selecting a microSD card, and to a lesser extent an SSD, for your Raspberry Pi may feel like walking through a landmine field with fake microSD cards that may perform poorly and severely impact the performance and/or reliability of your Raspberry Pi, and you’ll find plenty of articles helping you select a good microSD card for your Raspberry Pi. That’s probably why Raspberry Pi Holdings decided to launch its own Raspberry Pi-branded class A2 microSD cards and NVMe SSDs, so users can be sure they got a certified storage device that should perform as advertised as long as they purchase those from some authorized resellers. The company sent me 32GB and 64GB Raspberry Pi microSD cards and a 256GB Raspberry Pi SSD kit for testing, so I’ll test those in this review and compare them against other SSDs and microSD cards I’m currently using. Since we’ve not covered the new [...]

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High-speed data acquisition with Raspberry Pi Pico 2’s HSTX interface and HDMI to USB 3.0 video capture dongle

Raspberry Pi Pico 2 high-speed data acquisition

We previously explained the HSTX high-speed serial transmit interface of the Raspberry Pi RP2350 microcontroller was mostly useful for video outputs and display interfaces since it can only transmit, and not receive data. But Steve Markgraf found another use case for the HSTX interface – high-speed data acquisition – combining a Raspberry Pi Pico 2 board with the DVI Sock board for Pico and one of those cheap MS2130-based HDMI to USB 3.0 video capture dongles. He managed to stream out up to 75 MB/s of real-time data from an overclocked RP2350 to a host computer with a USB 3.0 port. The Adafruit Feather RP2350 HSTX board should also work, but also not been tested. Steve’s “hsdaoh-rp2350” data acquisition over HDMI firmware is based on the dvi_out_hstx_encoder example from Raspberry Pi using the HSTX interface for DVI output and code by Shuichi Takano implementing the HDMI data island encoding required [...]

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Variscite DART-MX91 SoM offers dual GbE, WiFi 6, 15 years support

DART MX91 SoM

The Variscite DART-MX91 system-on-module (SoM) is a compact, cost-effective NXP i.MX 91 Arm Cortex-A55 module which is part of the DART Pin2Pin family already includes the DART-MX93 and DART-MX8M-PLUS among others. The SoM supports up to 2GB of LPDDR4 RAM and 8 to 128 GB of EMMC storage along with dual CAN-FD, dual Gigabit Ethernet, and dual USB interfaces. Wireless options include certified Wi-Fi 6, Bluetooth 5.4, and optional 802.15.4 for low-power wireless communication. Additionally, it supports three I2S audio interfaces, S/PDIF, and support for both digital and analog stereo mics along with 8-bit parallel camera interfaces and display with a capacitive touch controller. Variscite DART-MX91 SoM Specifications SoC – NXP i.MX91 single-core Cortex-A55 processor clocked at 1.4 GHz with 32 KB I-cache and D-cache, 256KB L2 cache (no 3D GPU) System Memory – Up to 2GB LPDDR4 Storage – 8 to 128GB eMMC flash Networking Qualcomm Atheros AR8033 Gigabit [...]

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Jetway MF30 – A 3.5-inch SBC with 13th Gen Intel Core i5-1335U/1335UE Raptor Lake SoC, quad display support

Jetway MF30

The Jetway MF30 is a 3.5-inch subcompact board powered by 13th-generation Intel Core Raptor Lake-P U-series processors, including the Intel Core i5-1335U and Core i5-1335UE. Designed for embedded applications such as digital signage, control systems, gaming setups, and transportation hubs, the board supports versatile high-definition multi-screen configurations with two HDMI ports, two DisplayPorts, one Type-C DP, and one LVDS/eDP interface. For connectivity, the MF30 offers dual 2.5GbE ports, three USB 3.2 Gen2 ports, four USB 2.0 ports, and a USB Type-C port, while storage options include SATA III port and M.2 (2242/2280) sockets. Jetway is well known for its SBCs, and we’ve previously covered products like the JMTX-ADN8, JNUC-ADN1 mini-ITX motherboard, and JF35-ADN1 3.5-inch motherboard all powered by the Intel N97 CPU. Additionally, we’ve explored other SBCs and Mini PCs featuring 13th-gen Raptor Lake SoCs, including the iBASE IB961, GEEKOM GT13 Pro, Cincoze DV-1100, and LattePanda Sigma. If you’re interested [...]

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$29 Banana Pi BPI-CanMV-K230D-Zero features Kendryte K230D RISC-V SoC for AIoT applications

Banana Pi BPI CanMV K230D Zero

The Banana Pi BPI-CanMV-K230D-Zero is a compact and low-power single-board computer built around the Kendryte K230D dual-core XuanTie C908 RISC-V chip with an integrated third-generation Knowledge Process Unit (KPU) for AI computation. It follows the form factor of the Raspberry Pi Zero or Raspberry Pi Zero 2W board and targets IoT and ML applications. The SBC comes with 128MB of LPDDR4 RAM and uses a microSD card slot for storage. Additional features of this board include dual MIPI-CSI camera inputs for 4K video, a 40-pin GPIO header for I2C, UART, SPI, PWM, and more. Wireless features include 2.4GHz WiFi, USB 2.0 with OTG, and microphone support. These features make this SBC suitable for applications such as AI tasks such as image, video, and audio processing. Banana Pi BPI-CanMV-K230D-Zero Specifications SoC – Kendryte K230D CPU CPU1 – 64-bit RISC-V processor @ 1.6GHz with RVV 1.0 support CPU2 – 64-bit RISC-V processor [...]

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