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August 24, 2025August 25, 2025 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Getting Started with Quectel EC200U 4G LTE Cat 1 IoT board using the QNavigator and the QuecOpen SDK

Quectel EC200U development board QNavigator

CNXSoft: This is a guest post by Eicut showing how to get started with a Quectel EC200U 4G TLE Cat 1 IoT development board using QNavigator and the QuecOpen SDK. In IoT projects—and across embedded systems in general—we’ve seen a growing demand for higher data exchange rates, along with broader frequency band coverage. These advancements are critical for enhancing the reliability of a device’s communication link with the network. As a result, 4G modules with fallback capability to 2G and 4G networks have emerged as a leading solution in this space. But the key question remains: Which modules should we use to leverage this technology, and what features do they offer? Exploring the Quectel EC200U LTE Cat 1 Module for IoT In this section of the EC200U tutorial, we’ll take a closer look at one of the most popular and dependable options in the IoT space—Quectel’s EC200U module. If you’ve […]

August 16, 2025August 16, 2025 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

AAEON NV8600-Nano AI Developer Kit Review – Part 2: Benchmarks, features testing, AI demos with Nx Meta

NV8600-Nano AI Developer Kit review with Nx Meta AI platform

In the first part of the review, I had a look at the hardware of the NV8600-Nano AI developer Kit featuring an NVIDIA Jetson Orin Nano 8GB module, booted it to Ubuntu 22.04, checked some system information, and made sure both the USB camera and Raspberry Pi Camera Module 2 (MIPI CSI) module worked fine.

I’ve now spent much more time with the Edge AI devkit, and report my experience in the second part of the review with some benchmarks, key features testing, and AI vision demos using Network Optix Nx Meta IP video management platform with the provided USB camera and an ONVIF-capable network camera.

August 15, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

Embedded Device Security: Protecting Linux Systems with Modern Tools

Embedded Device Security Protecting data on Linux systems

CNXSoft: This is a guest port by Erik Wierich, Senior Engineer at RISCstar Solutions, demonstrating a practical security implementation for embedded devices using standard Linux tools like dm-verity and TPM 2.0. It covers threat models, filesystem security, and TPM-based encryption with working code examples. Nowadays, it is (rightfully) impossible to put an embedded device into the market without comprehensive embedded device security measures. Most new devices store private data that we do not want to see leaked in dark corners of the Internet. We also want to avoid our device ending up as part of a botnet. Linux has a large set of tools to help us with security. What has historically been lacking is a simple, off-the-shelf way to integrate these tools into a secure-by-default configuration. This post will demonstrate how modern tools simplify deployments while ensuring strong security. Embedded Device Security Scope When talking about embedded system security, […]

August 7, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

XIAOML Kit with ESP32-S3, camera, microphone, and IMU complements a free Machine Learning Systems book

XIAOML Kit Machine Learning Systems Book

The XIAOML Kit is one of the devkits that complements Harvard University Professor Vijay Janapa Reddi’s book “Introduction to Machine Learning Systems“, available for free as a 2050-page PDF file. Made by Seeed Studio, the XIAOML Kit is composed of the XIAO ESP32S3 Sense with an ESP32-S3 WiFI and Bluetooth SoC, a microSD card slot, a built-in OV3660 camera and microphone, and the “IMU Breakout board” featuring a 6-axis IMU and 0.42-inch OLED display. The kit enables students, educators, and developers to build vision, sound, and motion applications through tinyML lab sessions developed with Marcelo Rovai (UNIFEI). XIAOML Kit specifications: Main Board – XIAO ESP32S3 Sense SoC – Espressif Systems ESP32-S3R8 dual-core Tensilica LX7 microcontroller @ 240 MHz with 512KB SRAM, 8MB PSRAM, Wi-Fi 4 & Bluetooth 5.0 dual-mode (Classic + BLE) connectivity Storage – 8MB flash, microSD card slot Sensors – OV3660 camera, digital microphone USB – USB-C port […]

July 7, 2025 by Jean-Luc Aufranc (CNXSoft) - 14 Comments

ThinkNode M1/M2 Review – Getting started with Meshtastic

I’ve been writing about Meshtastic firmware and hardware since 2020, but I never had the opportunity to test it myself. This has now changed as Elecrow sent us the ThinkNode M1 and ThinkNode M2 Meshtastic nodes for review. Both rely on Semtech SX162x radios, but the M1 is based on a Nordic Semi nRF52840 Bluetooth MCU with a 1.54-inch E-Ink display and GPS, and the smaller M2 is based on an ESP32-S3 chip and a 1.3-inch OLED but lacks a built-in GPS module. Since I’ve never used Meshtastic before, this “review” will be more like a Getting Started Guide from a beginner’s perspective. After an unboxing and a teardown, I’ll test messaging, GPS sharing, and the range I can get in a suburban environment in Thailand. ThinkNode M1/M2 unboxing Both packages look similar, with a plastic case and a white cover. The ThinkNode M1’s main features include a high-gain antenna, […]

June 29, 2025July 9, 2025 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Pironman 5 Max Review – A fancy Raspberry Pi 5 Tower PC enclosure with dual M.2 PCI sockets for SSD and/or AI accelerator

SunFounder has sent me a review sample of the Pironman 5 Max Tower PC case for the Raspberry Pi 5 SBC. We had already reviewed the Pironman 5 last year, but the new Max model has various improvements, including a sleeker design made of black aluminum and semi-transparent black acrylic panels, a dual NVMe PiP expansion board for two M.2 NVMe SSDs (optionally in RAID 0/1 configuration), or one NVMe SSD and one AI accelerator module, a Tap-to-Wake feature for the OLED information display, and programmable RGB LEDs for the two fans. So the Pironman 5 Max deserves another review of its own. I’ll be doing an unboxing, going through the assembly instructions and software installation, before testing the new features, and finally, the cooling efficiency of the solution. Pironman 5 Max unboxing I received the Pironman 5 Max in its retail package along with a Raspberry Pi AI Kit […]

May 18, 2025May 19, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

M5Stack Tab5 Review – Part 2: Getting started with ESP32-P4 firmware development using the ESP-IDF Framework and Arduino IDE

In the first part of the review, we checked out the hardware of the M5Stack Tab5 ESP32-P4 IoT development kit and tried the demo firmware, whose user interface allows the user to quickly experiment with the camera, microphone, speaker, WiFi, power consumption, GPIOs, RS485, and more. Since there’s no user application for the Tab5 at this stage, I decided to look into software development resources for the ESP32-P4 devkit in the second part of the review. I’ll first follow the instructions to build the demo firmware from source using the ESP-IDF framework, then analyze key aspects of the source and make some small modifications. After that, I’ll have a look at ESP32-P4 Arduino support via M5Unified and M5GFX library. ESP-IDF 5.4.1 installation and ESP32-P4 Hello World program The first step is to get the ESP-IDF 5.4.1 and configure ESP32-P4 following the instructions on the Espressif website, before testing it with […]

May 13, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

Root Commit releases free training materials on OpenEmbedded and Yocto using the BeaglePlay SBC

Michael Opdenacker, Founder of Root Commit, has published free and open-source training materials on OpenEmbedded and Yocto using the BeaglePlay SBC powered by a Texas Instruments AM625 processor. If the name rings a bell, it’s because Michael was the founder of Bootlin (previously Free Electrons) before selling the company to employees in 2021. He’s now started a new company called Root Commit, where he continues providing Embedded Linux training and development services. He’s kept the tradition of releasing free training materials, with the latest course being related to Yocto development on the BeaglePlay board. You’ll find resources on the Root Commit website with three files, including 220 pages of lectures, 18 practical labs for the BeaglePlay board and QEMU, and source code/patchsets released under a Creative Commons BY-SA 4.0 license. The course includes an introduction to the Yocto Project 5.0 and Embedded Linux, a Getting Started guide explaining how to […]