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March 12, 2025March 11, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

Tips to use a touchscreen display with Raspberry Pi OS in 2025

I’ve just reviewed the SunFounder 10.1-inch touchscreen display with Raspberry Pi 5 running Raspberry Pi OS, and the experience was not quite as smooth as I had expected, so I’ll report some tips to save people time. The first is the software keyboard. Matchbox keyboard used to be the go-to solution, but two years ago, my preferred keyboard became the Onboard keyboard. Sadly, it’s not working so well with the latest Raspberry Pi OS using labwc Wayland window-stacking compositor, so now Raspberry Pi recommends squeekboard. It was not installed by default, but installation is fairly easy:

sudo apt install squeekboard

1	sudo apt install squeekboard

It did not show up automatically when trying to type in a text field, maybe because I’m using a third-party touchscreen keyboard, but going to Raspberry Pi Configuration and setting On-screen Keyboard to Enabled always in the Display tab fixed that. I was able to type a URL/web search terms in the URL […]

February 18, 2025 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

exo software – A distributed LLM solution running on a cluster of computers, smartphones, or SBCs

You’d typically need hardware with a large amount of memory and bandwidth and multiple GPUs, if you want to run the latest large language models (LLMs), such as DeepSeek R1 with 671 billion parameters. But such hardware is not affordable or even available to most people, and the Exo software works around that as a distributed LLM solution working on a cluster of computers with or without NVIDIA GPUs, smartphones, and/or single board computers like Raspberry Pi boards. In some ways, exo works like distcc when compiling C programs over a build farm, but targets AI workloads such as LLMs instead. Key features of Exo software: Support for LLaMA (MLX and tinygrad), Mistral, LlaVA, Qwen, and Deepseek. Dynamic Model Partitioning – The solution splits up models based on the current network topology and device resources available in order to run larger models than you would be able to on any […]

February 12, 2025February 16, 2025 by Paisit Wongsongsarn - 9 Comments

SONOFF ZBM5 Review – A 3-gang Zigbee Smart Wall Switch tested with eWeLink and Home Assistant

We will be reviewing a smart home device from SONOFF that we recently received right after the New Year, the SONOFF SwitchMan Zigbee Smart Wall (ZBM5). This is SONOFF’s first Zigbee-enabled Smart Wall Switch. In addition to functioning as a smart wall switch, it can also act as a Zigbee Router, making it easier to expand your Zigbee network at home in one shot. One of the key features of the SONOFF ZBM5 is that it can either operate in with-neutral (N) or without-neutral (N) wiring setups. Typically, in the market, we see these as separate models: one for with-neutral and another for without-neutral. This feature adds more flexibility for users, especially those with wiring constraints in their homes. Let’s dive into the details. SONOFF ZBM5 Unboxing Inside the box, you’ll find a user manual, wall plugs, and the switch itself. The model we received has a rectangular shape (120mm) […]

February 9, 2025February 9, 2025 by Jean-Luc Aufranc (CNXSoft) - 20 Comments

DeepSeek shown to run on Rockchip RK3588 with AI acceleration at about 15 tokens/s

Rockchip RK3588 DeepSeek R1 NPU acceleration

DeepSeek R1 model was released a few weeks ago and Brian Roemmele claimed to run it locally on a Raspberry Pi at 200 tokens per second promising to release a Raspberry Pi image “as soon as all tests are complete”. He further explains the Raspberry Pi 5 had a few HATs including a Hailo AI accelerator, but that’s about all the information we have so far, and I assume he used the distilled model with 1.5 billion parameters. Jeff Geerling did his own tests with DeepSeek-R1 (Qwen 14B), but that was only on the CPU at 1.4 token/s, and he later installed an AMD W7700 graphics card on it for better performance. Other people made TinyZero models based on DeepSeekR1 optimized for Raspberry Pi, but that’s specific to countdown and multiplication tasks and still runs on the CPU only. So I was happy to finally see Radxa release instructions to […]

January 29, 2025March 3, 2025 by Jean-Luc Aufranc (CNXSoft) - 36 Comments

Radxa Orion O6 Review – Part 1: Unboxing, Debian 12 installation, and first benchmarks

Radxa sent me a sample of the Orion O6 mini-ITX motherboard for review. The system is powered by an CIX P1 (CD8180) 12-core Armv9 processor, equipped with 16GB RAM, and offers features like 5GbE, HDMI and DisplayPort, a PCIe Gen4 x16 slot, and more. It’s one of the most anticipated boards of the first part of 2025 since it’s powerful, offers a good performance/value ratio, and eventually promises to boot any ISO Arm64 image through an open-source BIOS / EDKII bootloader. I’ll start this review with an unboxing, NVMe SSD and WiFi module installation, and a short tutorial showing how to install Debian 12 operating systems before getting some system information and running a few benchmarks. In a few weeks, I’ll publish a more detailed review with features testing and more benchmarks to see what works and what doesn’t at this very early stage. Radxa Orion O6 unboxing I received […]

January 20, 2025 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Disabling VT-d improves Intel Arc GPU Linux performance on Meteor Lake and newer SoCs

Improve Intel Arc GPU performance Linux VT-d disabled

In this post, I’ll check whether disabling VT-d virtualization support may improve the performance of the Intel Arc GPU in recent Meteor Lake or Lunar Lake SoC using a Khadas Mind Maker Kit with an Intel Core Ultra 7 258V CPU with Intel Arc 140V graphics running Ubuntu 24.10. A few days ago, I read a post on Phoronix about Intel publishing tips to improve the performance of Intel GPUs in Linux: Keep the system updated with the latest kernel and Mesa versions. Ensure SoC firmware is up-to-date. These firmware updates currently require installing the Windows graphics driver; firmware updates via fwupd are in progress. Use Wayland where possible, as it supports additional modifiers for better performance. For MTL (Meteor Lake) and newer integrated GPUs, disable VT-d if virtualization is not needed. For discrete GPUs: Enable ReBAR_ Enable ASPM_ I was especially curious about the line about disabling VT-d virtualization […]

January 13, 2025January 16, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

Review of SMARTHON Smart City IoT Starter Kit for BBC Micro:bit

Smarthon Smart City IoT Starter Kit review

SMARTHON Smart City IoT Starter Kit for micro:bit is an educational kit for 10+ years old teaching basic projects from turning an LED to more complex projects with multiple sensors, IFTTT integration, and mobile app development. The company sent us a sample of the Start Kit along with a BBC Micro:bit board for review, and we’ll report our experience with the kit in this review. Unboxing of SMARTHON Smart City IoT Starter Kit for micro:bit The package I received includes the SMARTHON Smart City IoT Starter Kit for Micro:bit and a BBC Micro:bit V2 board since it’s not included in the starter kit. The bottom side of the package lists the main components and features a QR code pointing to the product page. The package includes cardboard and wooden models, various cables, a 180° servo, a screw set, a city map, the Smarthon IoT:bit carrier board for the BBC Micro:bit, […]

December 22, 2024March 2, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

Raspberry Pi CM5 review with different cooling solutions (and camera tribulations)

Raspberry Pi CM5 IO board cooling heatsink active cooler

The day of Raspberry Pi CM5 release, I published a mini review of the Raspberry Pi Development Kit for CM5 showing how to assemble the kit and boot Raspberry Pi OS, and I also ran sbc-bench benchmark to evaluate the performance. Sadly, the Broadcom BCM2712 CPU did throttle during the test meaning cooling was not optimal when the CM5 IO board was inside the IO Case and the Compute Module 5 was only cooled by the fan. So today, I’ll repeat the same test with other cooling solutions namely the official Raspberry Pi Cooler for CM5 (that’s a heatsink only), and EDATEC’s CM5 active cooler similar to the active cooler for the Raspberry Pi 5, but designed for the CPU module. But before that, I’ll do some house cleaning so to speak since last time, I booted Raspberry Pi OS from an NVMe SSD and I noticed the camera did […]