A Look at Ubuntu on MINIX NEO G41V-4 and J50C-4 Mini PCs

Mini PC Comparison

MINIX Technology Limited recently released two new Gemini Lake mini PCs running Windows 10 Pro namely the MINIX NEO J50C-4 actively-cooled mini PC with an Intel Pentium Silver J5005 processor and the MINIX NEO G41V-4 fanless mini PC powered by an Intel Celeron N4100 processor. Whilst each mini PC comes with 64GB of eMMC with pre-installed Windows 10 Pro together with 4GB of RAM they also support the addition of an optional 2280 M.2 drive and the MINIX NEO J50C-4 allows optional memory upgrades. Prior to testing their performance under Ubuntu, I established a comparison baseline by updating Windows to version 1903 and then running my standard set of benchmarking tools first with the default configuration of each mini PC and then repeated having installed the official MINIX 2280 M.2 240GB drives for each device together with adding an extra 4GB RAM to the MINIX NEO J50C-4. The results can then compared them with other Intel mini PCs: Then for …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

Testing NVIDIA Jetson Nano Developer Kit with and without Fan

Jetson Nano 52Pi-ICE Tower Cooling Fan

A few weeks ago I received NVIDIA Jetson Nano for review together with 52Pi ICE Tower cooling fan which Seeed Studio included in the package, and yesterday I wrote a getting started guide showing how to setup the board, and play with inference samples leveraging the board’s AI capabilities. I’ll now test the board with the stock heatsink in both 5W and 10W modes, and see if thermal throttling does occur, and then I’ll fit the tower cooling fan to find out if we can extract more performance that way and how much lower the CPU temperature is. Jetson Nano Stress Tests with Stock Heatsink Let’s install SBC-Bench testing utility, check it’s properly installed, and run it in 5W mode: The temperature never went over 44.5°C, and no throttling occurred. tegrastats during 7-zip multi-core test: Only two Cortex-A57 cores are used even under load, and power consumption is around 3.3 Watts. Let’s run sbc-bench in 10W mode: The maximum temperature …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

Getting Started with NVIDIA Jetson Nano Devkit: Inference using Images, RTSP Video Stream

Jetson Nano RTSP Stream Inference

Last month I received NVIDIA Jetson Nano developer kit together with 52Pi ICE Tower Cooling Fan, and the main goal was to compare the performance of the board with the stock heatsink or 52Pi heatsink + fan combo. But the stock heatsink does a very good job of cooling the board, and typical CPU stress tests do not make the processor throttle at all. So I had to stress the GPU as well, as it takes some efforts to set it up all, so I’ll report my experience configuring the board, and running AI test programs including running objects detection on an RTSP video stream. Setting up NVIDIA Jetson Nano Board Preparing the board is very much like you’d do with other SBC’s such as the Raspberry Pi, and NVIDIA has a nicely put getting started guide, so I won’t go into too many details here. To summarize: Download the latest firmware image (nv-jetson-nano-sd-card-image-r32.2.3.zip at the time of the review) …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

MINIX NEO G41V-4 Mini PC Review – Part 2: Windows 10 Pro


MINIX NEO G41V-4 is the latest mini PC from the Hong Kong-based company, and this time they’ve gone fanless with a new design that should allow proper cooling with a large heatsink, plenty of ventilation holes on the top, as well as a dust-resistant meshing to present dust from entering inside the enclosure. I’ve now had time to review the fanless mini PC, and I’ll report my experience with Windows 10 Pro. Switching to Windows 10 Boot from SSD I had installed the optional 240GB SSD in the first part of the review. It offers an easy way to get more storage and performance, and you don’t need to reinstall Windows 10 Pro since it’s already installed in the SSD. You just need to change some settings in the BIOS as explained in the user manual. To be on the safe side, you may want to follow the instructions to the letter, but for convenience, I followed a slightly different …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

Rikomagic R6 Mini Projector Review – Part 2: Android 7.1

Rikomagic R6 Android Projector Review

We’ve already quickly checked out Rikomagic R6 mini projector in the first part of the review with an unboxing and first boot,  but now I’ve had more time to play with the device, so I’ll report about my experience. Android Launcher and Default Apps Here’s the launcher pre-installed in the projector. Media Center The Media Center app allows you to display images, play audio files as well as videos. It will show thumbnails of images present in the current folder… and as soon as you select one image in the folder it will start a slideshow with classic music playing the background. You’ll be able to see what it looks like in the video at the end of this review. Happy Cast It’s an app in Chinese, that apparently allows you to cast from other Chinese apps, but I have not used it. WiFi Display WiFi Display will be one of the most useful app, as it allows you to …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

NVIDIA Jetson Nano Review with 52Pi ICE Tower Cooling Fan – Part 1: Unboxing

Jetson Nano Review with ICE Tower Cooling Fan

If you remember soon after Raspberry Pi 4 launch, there were talks about the SBC overheating under load, and depending on room temperature and workload a heatsink may be needed for the board to perform optimally at all times. This gave birth to “interesting” solutions such as 52Pi ICE Tower Cooling Fan, an oversized cooling solution for Raspberry Pi 4. It does the job however, and it allows me to overclock Raspberry Pi 4 to 2.0 GHz while keeping the CPU temperature under 55°C in a room at 28°C. But the latest Raspberry Pi Foundation board is not the only SBC to suffer from overheating, as at least one user noticed the board would just shutdown under load. The solution was to switch from 10W mode to 5W mode, not an ideal solution since it’s also lowering performance. But 52Pi is coming to the rescue again, as they adapted their ICE tower cooling fan to Jetson Nano SBC. Seeed Studio …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

How to install Duet 2 Maestro Board on HE3D K280 3D Printer

Duet 2 Maestro Wires Description

Quite a while ago I reviewed the HE3D K280 delta 3D printer.  Up until now, I did no mods other than the ones that I completed during the initial build. I have been very happy with it with the exception of the noise caused by inexpensive drivers and the salmon skin due to the drivers as well. The K280 prints big and pretty accurate at modest speeds. Today I am outlining how I upgraded to a Duet 2 Maestro mainboard. With this upgrade, I am jumping from an 8-bit board with generic drivers to a 32-bit board with TMC2224 drivers. The upgrade was quite painless and straightforward but not without a few hiccups. The Maestro is Duet’s entry-level board for about $130. I attempted the Bigtreetech SKR 1.3 with TMC2130’s but the firmware wasn’t quite there yet. I opened an issue on Marlin’s GitHub page which explains the issue in detail here. I only had one major issue with the …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

Sovol SV01 Upgrade with BigTreeTech SKR mini E3 Control Board

Sovol SV01 Upgrade: Bigtreetech SKR mini E3

Karl here with a quick upgrade guide. The one complaint I had in the review of the SV01 3D printer was it was loud. Today we are going to look at resolving part of the problem by replacing the Creality board with the BigTreeTech SKR mini E3 V1.2 control board sold on Amazon for around $37. Fan noise at a later date. This board is ideal because the SD card, USB, and screws line up for nearly a perfect replacement. I did not bother hooking up the filament runout sensor. I have never found them particularly useful and always ensure I start with enough filament and bypassed it for the review. The board comes with TMC2209 drivers which significantly reduce the stepper motor noise as well as stop any salmon skin. SKR Mini E3 Warning This board is a replacement for the board found on the Ender 3. Below is from the manual. I purchased a clamp meter to test …

Support CNX Software – Donate via PayPal or become a Patron on Patreon