Debashis Das, Author at CNX Software

November 17, 2025 by Debashis Das - No Comments

Nuvoton NuMicro M55M1 low-power Arm Cortex-M55 MCU enables on-device AI with Ethos-U55 NPU

Nuvoton’s NuMicro M55M1 is a low-power AI MCU that combines a 220 MHz Arm Cortex-M55 CPU with a 111 GOPS Ethos-U55 NPU to run basic AI tasks on-device. It specifically targets small IoT and embedded devices that need low-power voice, audio, or simple image processing. The chip embeds 1.5 MB RAM, 2 MB flash, and supports external OctoSPI/HyperRAM memory. Connectivity options include Ethernet, USB-OTG, CAN-FD, I3C/I2C/SPI, SDIO, and an 8-bit camera interface, along with ADCs, DACs, comparators, PWM, and multiple low-power modes. It’s built for secure IoT applications with Arm TrustZone, secure boot, AES, and PSA Level 2 certification. Typical uses include voice triggers, smart sensors, simple vision nodes, small appliances, and industrial monitoring devices. Nuvoton NuMicro M55M1 specifications: CPU Core – 220 MHz Arm Cortex-M55 core Architecture – Armv8.1-M with Helium M-Profile Vector Extension (MVE) Arm TrustZone Technology DSP extensions Hardware Floating-point Unit (FPU), double-precision Cache – 16KB I-Cache […]

November 14, 2025 by Debashis Das - 21 Comments

Turris Omnia NG Wi-Fi 7 router features dual 10GbE SFP+, mini PCIe slot for 4G LTE/5G, runs OpenWrt-based Turris OS

The Turris Omnia NG is a high-performance Wi-Fi 7 router with a mini PCIe slot for 4G/5G modems, two 10GbE SFP+ cages, a 240×240 px color display, and a D-Pad button, running OpenWrt-based Turris OS, and designed for advanced home users, small businesses, and lab environments. Built around a 2.2 GHz Qualcomm IPQ9574 quad-core 64-bit Arm Cortex-A73 CPU, the Omnia NG supports Wi-Fi 7/6 tri-band connectivity. Additionally, it features four 2.5Gbps Ethernet ports, two USB 3.0 ports, NVMe storage support, and includes a 90 W power supply for attached peripherals. Other hardware highlights include rack-mount supports, a metal chassis, and antenna arrays for 4×4 MIMO operation. It comes 10 years after the original Turris Omnia open-source router was launched on Indiegogo. Turris Omnia NG Router specifications: CPU – Qualcomm IPQ9574 quad-core Arm Cortex-A73 processor @ 2.2GHz processor Memory – 2 GB RAM Storage 8 GB eMMC storage M.2 socket for […]

November 13, 2025November 13, 2025 by Debashis Das - 3 Comments

The PV PI HAT adds 10A true MPPT solar charging to the Raspberry Pi (Crowdfunding)

PV Pi A Solar Charging Hat for Raspberry Pi

Developed by Luke Ditria and his team at AutoEcology, the PV PI is a plug-and-play MPPT solar charging HAT designed for Raspberry Pi and other SBCs like the Orange Pi, Banana Pi, and NVIDIA Jetson. Designed for outdoor and remote projects and built around TI BQ25756 charge controller and STM32F103 MCU, it supports LiFePO4 management, true MPPT charging, power monitoring, and automation over the RS-232 UART interface. It also produces 5V output via a high-current buck/boost converter, supports watchdog-based power cycling, RTC wake-up scheduling, and automatic restart at safe voltage levels. With XT30 connectors, stackable headers, and RTC backup, the PV PI HAT is ideal for solar-powered IoT like AI-based wildlife monitors, environmental monitoring, and remote data logging applications. PV PI HAT specifications Compatibility – Raspberry Pi, Orange Pi, Banana Pi, NVIDIA Jetson, etc… Main MCU – STmicro STM32F103 Arm Cortex-M3 microcontroller @ 72 MHz Charge controller – BQ25756 I2C […]

November 12, 2025 by Debashis Das - 13 Comments

$69 Sipeed SLogic16U3 low-cost logic analyzer supports 3.2 Gbps bandwidth, 150+ protocols

The SLogic16U3 is a compact, low-cost USB 3.0 logic analyzer with up to 3.2 Gbps bandwidth and 16 input channels, designed for debugging, reverse-engineering, and verifying digital circuits and embedded systems. The device supports sampling rates up to 800MS/s with four channels, 400MS/s with eight channels, and 200MS/s with sixteen channels via a 5 Gbps USB 3.0 interface. On top of that, it supports 0–10V inputs and features adjustable trigger thresholds (0–6V). Housed in a 40×40×10 mm compact aluminum case, it supports over 150 protocols like SPI, I²C, UART, CAN, and JTAG, and provides edge-based triggering with real-time streaming over USB. The device can be extended as an oscilloscope via an optional ADC module and integrates seamlessly with Sigrok and PulseView software for waveform visualization. SLogic16U3 specifications: MCU – TBD Input channels – 16 digital channels Sampling rates 800MS/s @ 4 channels 400MS/s @ 8 channels 200MS/s @ 16 channels […]

November 10, 2025November 10, 2025 by Debashis Das - 2 Comments

Raspberry Pi CM5 industrial carrier board features dual Ethernet, optional 4G LTE/5G cellular connectivity, metal case, and more

Waveshare CM5-DUAL-ETH-4G/5G-BASE is an industrial carrier board for the Raspberry Pi CM5. It features dual Ethernet (GbE + 2.5GbE), 4G/5G options, and includes an optional metal enclosure, active cooling fan, and power supply, which is an upgrade from the previous CM5-DUAL-ETH-BASE carrier board. The board also offers two HDMI outputs supporting 4K displays, two MIPI DSI/CSI connectors for displays and/or cameras, two USB 3.2 ports, a 40-pin GPIO header, M.2 slots for both NVMe SSDs and 4G/5G modules, and PoE support via an add-on module. The board supports 7V–36V DC input, a PWM fan header, and RTC battery backup, with precise cutouts and labeled connectors for easy integration. Its main benefits over the CM5-DUAL-ETH-BASE are its more compact size and neatly arranged ports on the rear panels, while adding optional support for 4G LTE or 5G connectivity. CM5-DUAL-ETH-4G/5G-BASE specifications: Compatibility – Raspberry Pi Compute Module 5 (CM5) Storage Optional NVMe SSD […]

November 10, 2025 by Debashis Das - 2 Comments

$149 Allwinner A733 development board offers HDMI Input, eDP, Android 15 support

While browsing AliExpress, I came across an Allwinner A733 development board (A733MAIBORADBV1) priced at $149, which piqued my interest as the price tag was much higher than other A733 boards, such as the $35+ Orange Pi 4 Pro or Radxa Cubie A7Z/A7A. It turns out that this board not only supports up to 16GB of RAM, and Android 15. It also includes features like HDMI input and output, MIPI-CSI/DSI, eDP, capacitive touch, and M.2 expansion, making it a development platform for tablets, laptops, and AI prototypes rather than low-cost maker projects. A733MAIBORADBV1 board specifications: SoC – Allwinner A733 CPU Dual-core Arm Cortex-A76 @ up to 2.00 GHz Hexa-core Arm Cortex-A55 @ up to 1.79 GHz Single-core RISC-V E902 real-time core GPU – Imagination Technologies BXM-4-64 MC1 GPU VPU 8Kp24 H.265/VP9/AVS2 decoding 4Kp30 H.265/H.264 encoding AI accelerator – Optional, up to 3 TOPS NPU System Memory – 2GB, 4GB, 8GB, or 16GB […]

November 5, 2025November 6, 2025 by Debashis Das - 5 Comments

WCH BLE Analyzer Pro – A Bluetooth LE sniffer, analyzer, and debugging tool

WCH BLE AnalyzerPro A BLE sniffer debugging tool

WCH BLE Analyzer Pro is a USB-based Bluetooth Low Energy (BLE) sniffer and debugging tool designed to capture, decode, and analyze BLE communication packets in real-time. The analyzer supports adjustable polling intervals, broadcast and connection packet tracking, address filtering, and detailed packet inspection with statistics and graphical representation. It can monitor BLE broadcast and connection data in real-time and includes functions such as PHY mode selection and whitening control. These features enable low-level monitoring of BLE communication, help identify transmission issues, and verify protocol behavior. Applications include use in R&D, testing, and debugging of Bluetooth-enabled products such as IoT devices, wearables, and sensors. WCH BLE Analyzer Pro specifications: Main chips – 3x CH582F Bluetooth LE RISC-V microcontrollers, and a CH334 USB hub (see board photo at the end of the post) Supported protocol – Bluetooth Low Energy (BLE) 4.0/4.2/5.0 Capture range – BLE advertisement and connection packets Frequency band – […]

October 31, 2025October 30, 2025 by Debashis Das - 1 Comment

ESP32JTAG – An open-source wireless JTAG and logic analyzer (Crowdfunding)

EZ32 ESP32JTAG is an open-source, wireless JTAG and logic analyzer tool that can debug both MCUs and FPGAs. It features a 16-channel 250 MHz logic analyzer and integrated UART interface, designed to replace tools such as ST-Link or Saleae analyzers in a single compact, wireless solution. The device is built around an ESP32-S3 dual-core SoC and a small FPGA with 5k logic gates and 1 Mbit of internal RAM to handle high-speed signal processing. Connectivity options include Wi-Fi 4, Bluetooth 5.0, and USB Type-C, and a small 1.83-inch LCD displays system information such as IP address and status. The ESP32JTAG is also equipped with four configurable 4-wire ports for JTAG, SWD, UART, and logic analyzer mode, and supports target voltage monitoring. EZ32 ESP32JTAG specifications: Wireless MCU – Espressif Systems ESP32-S3 CPU – dual-core Tensilica LX7 @ up to 240 MHz with vector instructions for AI acceleration Memory – 512KB RAM, 8MB […]