ELEGOO sent us the Saturn 4 Ultra 16K Resin 3D printer for review. As its name implies, the 3D printer features a 10-inch LCD with a resolution of up to 16K (14112×7936 pixels) to print sharper and more detailed workpieces. The printer also offers WiFi and Ethernet connectivity, and an automatic print base detection and leveling system to increase accuracy and reduce errors while printing. We were also provided with the ELEGOO Mercury Plus 3.0 wash and cure station for the review. It is designed to be easy to use, supports both water and alcohol washing, and is equipped with a 405nm UV light to increase strength and reduce the stickiness of the workpiece. Unboxing and Key features of the ELEGOO Saturn 4 Ultra 16K resin 3D printer Smart Tank Heating System The ELEGOO Saturn 4 Ultra 16K resin 3D printer features a “smart tank heating system” that enables high-quality [...]

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Renesas has recently introduced the RA4L1 ultra-low-power Arm Cortex-M33 MCU family along with two evaluation/development boards. This new lineup consists of 14 ultra-low-power devices based on an 80 MHz Arm Cortex-M33 processor with TrustZone support and designed for metering, IoT sensing, smart locks, digital cameras, and human-machine interface (HMI) applications. The RA4L1 MCU family offers high power efficiency at 168 µA/MHz while active and a standby current of 1.70 µA while retaining SRAM. Additionally, they support segment LCD, capacitive touch, USB-FS, CAN FD, low-power UART, multiple serial interfaces (SPI, QSPI, I2C, I3C, SSI), ADC, DAC, real-time clock, and security features like the RSIP security engine with TRNG, AES, ECC, and Hash. Renesas RA4L1 microcontroller Renesas RA4L1 specifications MCU core Arm Cortex-M33 core (Armv8-M) Up to 80 MHz operating frequency Arm Memory Protection Unit (MPU) 8 secure regions (MPU_S) 8 non-secure regions (MPU_NS) CoreSight ETM-M33 Dual SysTick timers (secure & non-secure) [...]

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Ubuntu 24.04.2 has just been released with Linux 6.11 kernel and hardware enablement (HWE) stack. I would typically not care too much about a point release, but our reviews of mini PCs have shown Ubuntu 24.04 with Linux 6.8 was not always well supported with recent mini PC, mostly due to issues with WiFi or Bluetooth, but sometimes it’s even worse. The most common problem I encountered was that MediaTek MT7922-based WiFi 6 and Bluetooth 5.3 module would not support Bluetooth on Ubuntu 24.04 unless we updated the Linux kernel to version 6.10 or newer. Mini PCs with recent processors like the Khadas Mind 2 AI Maker Kit based on Intel Core Ultra 7 258V AI SoC required even more tweaks for HDMI audio, GPU, and WiFi + Bluetooth which is why I tested it with Ubuntu 24.10 instead. Ubuntu 24.04.2 should solve all of those issues. The announcement explains [...]

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KiCad 9 open-source EDA software has just been released with a range of new features such as support for embedded files (fonts, 3D files, PDF), tables in schematics, custom ERC/DRC errors, warnings, and exclusion comments, mouse scroll wheel actions, multiple track drag, and much more. The latest KiCad 9.0.0 release includes 4,870 unique commits from hundreds of developers and translators, and the KiCad library has further gained 1500 new symbols, 750 new footprints, and 132 new 3D models. There are way too many changes to list them all here, so I’ll mention some highlights here: Jobsets (predefined output jobs) – Feature that provides predefined sets of ‘jobs’— plotting, exporting, and running DRC—on schematics and PCBs. Independent jobset files are reusable as users may want to create output pipelines that they can apply across their projects for consistency. Jobsets can be run from the command line or the KiCad GUI. Embedded [...]

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The Femtofox Pro v1 kit is a compact, low-power LoRa and Meshtastic development board running Linux specially designed for Meshtastic networks. Built around the Luckfox Pico Mini (Rockchip RV1103) SBC, this compact development platform supports USB host/device functionality, Ethernet, WiFi over USB, GPIO interfaces, I2C, UART, and a real-time clock (RTC). The most unique feature of this board is that it operates at very low power (0.27-0.4W), making it ideal for solar-powered applications. Additionally, Femtofox supports native Meshtastic client control, USB mass storage, and network reconfiguration via a USB flash drive. It also includes user-configurable buttons for WiFi toggling and system reboot, enhancing its usability. These features make Femtofox particularly useful for applications such as emergency response and off-grid messaging. Femtofox Pro v1 kit specifications Mainboard – Luckfox Pico Mini A SoC  – Rockchip RV1103 SoC CPU – Arm Cortex-A7 processor @ 1.2GHz + RISC-V core Memory – 64MB DDR2 [...]

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STMicro first introduced the STM32C0 32-bit Arm Cortex-M0+ MCU family as an 8-bit MCU killer in 2023, followed by the STM32C071 adding USB FS and designed for appliances with graphical user interfaces (GUI). The company has now added three new parts with the STM32C051, STM32C091, and STM32C092. The STM32C051 is similar to the original STM32C031 but adds more storage (64KB vs 32KB) and is offered in packages with up to 48 pins, while the STM32C09x parts offer flash densities up to 256 KB in packages up to 64 pins, and the STM32C092 also gains a CAN FD interface. The STM32C09x parts can be seen as an update to the STM32C071 where more flash memory is needed. That’s 30 new SKUs bringing the total to 55 when different packages and flash memory size/RAM size options are taken into account. The STM32C051 offers the same maximal amount of SRAM as the STM32C031 [...]

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People are trying to run LLMs on all sorts of low-end hardware with often limited usefulness, and when I saw a solar LLM over Meshtastic demo on X, I first laughed. I did not see the reason for it and LoRa hardware is usually really low-end with Meshtastic open-source firmware typically used for off-grid messaging and GPS location sharing. But after thinking more about it, it could prove useful to receive information through mobile devices during disasters where power and internet connectivity can not be taken for granted. Let’s check Colonel Panic’s solution first. The short post only mentions it’s a solar LLM over Meshtastic using M5Stack hardware. On the left, we must have a power bank charge over USB (through a USB solar panel?) with two USB outputs powering a controller and a board on the right. The main controller with a small display and enclosure is an ESP32-powered [...]

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The Raspberry Pi Pico SDK 2.1.1  has just been released with official 200 MHz clock support for the Raspberry Pi RP2040 MCU, several new boards mostly from Waveshare, but also one from Sparkfun, as well as new code samples, and other small changes. Raspberry Pi RP2040 gets official 200 MHz clock support When the Raspberry Pi RP2040 was first released along with Raspberry Pi Pico in 2021, we were told the default frequency was 48 MHz, but the microcontroller could also run up to 133 MHz. Eventually, I think the Cortex-M0+ cores were clocked at 125 MHz by default, although some projects (e.g. PicoDVI) would boost the frequency up to 252 MHz. Frequencies higher than 133 Mhz were not officially supported so far, but the Pico SDK 2.1.1 changes that since the Raspberry Pi RP2040 has now been certified to run at a system clock of 200MHz when using a [...]

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Youtuber and tech enthusiast Binh Pham has recently built a portable plug-and-play AI and LLM device housed in a USB stick called the LLMStick and built around a Raspberry Pi Zero W. This device portrays the concept of a local plug-and-play LLM which you can use without the internet. After DeepSeek shook the world with its performance and open-source accessibility, we have seen tools like Exo that allow you to run large language models (LLMs) on a cluster of devices, like computers, smartphones, and single-board computers, effectively distributing the processing load. We have also seen Radxa release instructions to run DeepSeek R1 (Qwen2 1.5B) on a Rockchip RK3588-based SBC with 6 TOPS NPU. Pham thought of using the llama.cpp project as it’s specifically designed for devices with limited resources. However, running llama.cpp on the Raspberry Pi Zero W wasn’t straightforward and he had to face architecture incompatibility as the old [...]

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Kontron 3.5″-SBC-AML/ADN is a 3.5-inch single board computer powered by either Intel Amston Lake (Industrial grade) or Alder Lake-N (commercial grade) processor and designed for applications such as automation, healthcare, smart city, and smart retail. It builds upon the smaller Kontron 2.5”-SBC-AML/ADN Pico-ITX SBC with many of the same features, but replaces eMMC flash storage with an M.2 SATA/NVMe socket and a SATA connector, features DDR5 SO-DIMM memory instead of soldered-on LPDDR5, and the larger PCB size allows it to gain an extra DisplayPort connector, a USB 2.0 Type-A port, additional serial ports, and a board-to-board (B2B) connector for expansion. It also supports a wider 9 to 36V DC range. Kontron 3.5″-SBC-AML/ADN specifications: SoC Standard Intel Atom x7211RE dual-core processor up to 3.2GHz with 6MB cache, 16EU Intel UHD graphics; TDP: 6W Intel Atom x7433RE quad-core processor up to 3.4GHz with 6MB cache, 32EU Intel UHD graphics; TDP: 9W Intel [...]

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ESPHome is the favorite open-source firmware of Smart Home devices, but Tasmota is another option that’s been available for many years. We’ve just seen fewer products based on Tasmota (previously Sonoff-Tasmota) in recent years, but it recently showed up on a credit card-sized quad relay board, and I’ve just come across Maker Go’s Xcrhom T4S WiFi Outdoor Smart Socket that also ships with Tasmota firmware and sells on AliExpress for $24.88 shipped. The Xcrhom T4S exposes two sockets with dust and rainproof covers to be used safely outdoors, integrates a power meter, and the Tasmota firmware enables MQTT support, Home Assistant compatibility, and support for Amazon Alexa and Google Assistant. Xcrhom T4S specifications: Two EU sockets Max load – 3680W in total (16A x 230V) Rated Current – Up to 16A in total Power Input – 100 to 240V AC 50Hz Wireless – 2.4 GHz 802.11b/g/n WiFi 4; Tx power [...]

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Connections between chips have become increasingly complex, and applications with higher frequency and speed requirements may not make use of traditional PCB technology. That’s where the interposer PCB, a new type of PCB comes into play. PCBWay has the capability to manufacture high-layer, high-order PCBs, and even successfully developed a 24-layer, 6-order arbitrary interconnection HDI PCB. The interposer PCB is a highly precise, high-density interconnect (HDI) PCB that allows for a higher wiring density per unit area compared to traditional PCBs. HDI PCBs are characterized by features such as micro vias, finer lines and spaces, higher connection pad density, and the use of blind and buried vias. These features enable the miniaturization of electronic devices by allowing more functionality to be packed into a smaller space. The design characteristics of this PCB include inner layers connected to the outer layers through laser microvias and dense routing, resulting in a multi-structure [...]

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Made by Shenzhen SIDIQIAO Technology, the Bapaco is a mechanical keyboard PC powered by an Intel Core i5-1235U 10-core Alder Lake SoC and equipped with a 12.3-inch ultra-wide touchscreen display with 1920×720 resolution. The keyboard PC is offered as a barebone model without memory or storage but supports up to 32GB RAM, an M.2 2280 NVMe SSD, and/or an M.2 2242 SATA 3.0 SSD.  It also features an HDMI output to connect an extra display, WiFi 6 connectivity, a few USB ports, and a 3.5mm audio jack and stereo speakers. Bapaco specifications: SoC – Intel Core i5-1235U CPU – 10-core/12-thread hybrid Alder Lake U-Series processor with 2x Performance cores @ 1.3/4.4GHz, 8x Efficient cores @ 0.9/3.3GHz Cache – 12 MB Intel Smart Cache GPU – 80EU Iris Xe Graphics @ 1.2 GHz BPB: 15W System Memory – Up to 32GB DDR4 3200MT/s SO-DIMM single-channel memory Storage M.2 2280 NVMe PCIe [...]

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Vaaman is a reconfigurable single-board edge computer that integrates a Rockchip RK3399 hexa-core ARM processor with an Efinix Trion T120 FPGA, offering a reconfigurable platform for edge computing applications. The board combines the flexibility of an FPGA with the raw power of a hard processor to create a system capable of adapting to varying computational demands in real time. The compact SBC features the Rockchip RK3399 hexa-core processor with two Cortex-A72 cores and four Cortex-A53 cores, as well as an Efinix Trion T120 FPGA with 112,128 logic elements, interlinked with RK3399 via a high-speed 300Mbps bridge (but it’s unclear how this is implemented). It is billed as a “Raspberry Pi-style board for the FPGA world” that can be used for cryptographic acceleration, software-defined radio (SDR), digital signal processing, real-time robotics, real-time video processing, edge AI deployments, industrial automation, and hardware prototyping. It features a 40-pin Raspberry Pi-compatible GPIO header and [...]

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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 [...]

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ADLINK OSM-MTK510 is an OSM Size-L compliant module powered by a MediaTek Genio 510 hexa-core Arm Cortex-A78/A55 SoC with a 3.2 TOPS AI accelerator and equipped with up to 8GB LPDDR4 and 128GB eMMC flash. The OSM module supports HDMI 2.0, MIPI DSI, and eDP display interfaces, up to 30MP cameras, and I/O options such as gigabit Ethernet, USB 3.0, and PCIe Gen2 x1. The OSM-MTK512 is available in either commercial or industrial (-40°C to 85°C) temperature grades and the company offers at least a 10-year lifecycle for long-term use. ADLINK OSM-MTK510 specifications: SoC – MediaTek Genio 510 (MT8370) CPU – Hexa-core processor with 2x Cortex-A78 cores @ up to 2.2 GHz and 4x Cortex-A55 cores @ up to 2.0 GHz GPU – Arm Mali-G57 MC2 GPU VPU for visual processing Encoding up to 4Kp30 with H.265/HEVC or H.264 Decoding up to 4Kp60, AV1, VP9, HEVC, H.264 codecs supported AI [...]

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Beagleboard has recently announced the PocketBeagle 2, a single board computer (SBC) built around TI’s AM6232 dual-core Cortex-A53 and Cortex-M7 SoC and an additional MSPM0L1105 Arm Cortex-M0+ microcontroller for ADC pins and board ID storage. Designed for developers, students, and hobbyists, it’s a direct upgrade from the previous generation PocketBeagle which the company released in 2017. The new board comes with a faster dual-core 64-bit CPU (compared to a single-core CPU), faster memory (DDR4), improved power management (USB-C + LiPo charger), and easier debugging (UART + JTAG) for faster development. Additionally, it comes with four user-controllable LEDs, a power LED, and a battery-charging LED for better status indication. Unlike the first generation, this new version comes with pre-soldered GPIO headers with the same compact (55 x 35mm) form factor making it suitable for embedded applications and IoT projects. PocketBeagle 2 single-board computer specifications Main SoC – Texas Instruments AM6232 CPU [...]

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Waveshare has recently released the RoArm-M3-Pro and RoArm-M3-S, a 5+1 DOF high-torque ESP32 robotic arm kit. The main difference between the two is that the RoArm-M3-Pro features all-metal ST3235 bus servos for durability and longevity, on the other hand, the RoArm-M3-S uses standard servo motors which are less durable for long-term use. These robotic arms feature a lightweight structure, a 360° omnidirectional base, and five flexible joints, which together create a 1m workspace with a 200 grams @ 0.5m payload. A 2-DOF wrist joint enables multi-dimensional clamping and precise force control. It integrates an ESP32 MCU, supporting multiple wireless control modes via a web app, it also supports inverse kinematics for accurate positioning, curve velocity control for smooth motion, and adaptive force control. The design is open source and with ROS2 compatibility, it allows secondary development via JSON commands and ESP-NOW for multi-device communication. Compatible with the LeRobot AI framework, [...]

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Morse Micro in collaboration with GL.iNet has recently showcased the HaLowLink 1 Wi-Fi HaLow gateway, which the company terms as Wi-Fi HaLow reference design and evaluation platform developed for long-range, low-power wireless connectivity for IoT applications. Built around the AzureWave AW-HM593 module with Morse Micro MM6108 silicon, it supports 1/2/4/8 MHz bandwidths. It features a MediaTek MT7621A dual-core CPU, Wi-Fi 4 module, dual Gigabit Ethernet, USB-C, and an SMA antenna connector, allowing it to work as a Wi-Fi HaLow router, access point, or extender. The device runs OpenWrt and provides an intuitive web-based UI and SSH/CLI configuration. OpenWrt also gives access to a web-based UI and SSH/CLI configuration. These features make this device useful for applications like smart homes, industrial automation, agriculture, and telecommunications. HaLowLink 1 specifications: SoC – Mediatek MT7621 dual-core, quad-thread MIPS1004K processor @ up to 880MHz System Memory – 256MB DDR3 (optional 512 MB) Storage – 32MB [...]

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Mekotronics R58-N100 is an Intel Processor N100 mini PC whose main differentiating feature is its metal enclosure with four holes suitable for direct wall mounting. The computer supports DDR5 SO-DIMM memory and M.2 MVMe SSD storage. It also features three 4K-capable HDMI video outputs, gigabit Ethernet, WiFi 6, three USB 3.0 ports, a USB Type-C port, and a 3.5mm audio jack. Mekotronics R58-N100 specifications: SoC – Intel Processor N100 CPU – Quad-core Alder Lake-N processor @ up to 3.4 GHz (Turbo) GPU – 24EU Intel HD graphics @ 750 MHz Cache – 6MB cache TDP – 6W System Memory – 8GB or 16GB DDR5 Storage – 128GB, 256GB, or 512GB M.2 MVMe SSD Video Output – 3x HDMI 2.0 ports up to 4Kp60; up to at least 3x independent displays supported Audio – 3.5mm headphone+mic jack, digital audio output via HDMI Connectivity Gigabit Ethernet RJ45 ports Dual-band 802.11b/g/n/ac/ax WiFi 6 [...]

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