My 3D printer pays for itself every time I skip buying a PC accessory

RP2350B bells&whistles development board features on-board RP2040 debugger, HDMI, and microSD card slot

Bảng phát triển RP2350B Bells&Whistles tích hợp sẵn bộ gỡ lỗi RP2040 (Picoprobe), cổng HDMI (qua PicoDVI), khe cắm thẻ microSD, PSRAM 8MB tùy chọn, flash SPI 4MB, 46 chân GPIO và hai cổng USB-C. Bo mạch hỗ trợ nguồn mở (KiCad, sơ đồ trên GitHub) với giá 29,95 USD trên Tindie.

Lập trình viên muốn phát triển ứng dụng trên RP2040 nhưng gặp khó khăn với việc debug và mở rộng hệ thống cần tìm hiểu cách tích hợp RP2350B để tiết kiệm chi phí và tăng hiệu năng với các tính năng như debug built-in, HDMI, và lưu trữ MicroSD.

Terramaster F4-425 Pro: An Hardware Upgrade for an Already Solid NAS

Terramaster has refreshed its F4-425 NAS lineup with the Pro model, upgrading the CPU from an Intel N150 (4-core) to an Intel Core 3 N350 (8-core, 7W TDP) and doubling the integrated GPU execution units to 32. The unit reviewed is the top configuration with 16GB DDR5, priced at $799.99. A notable discovery: TOS installs on user-inserted disks rather than onboard storage, making drive migration between devices seamless. TOS 7 brings a cleaner UI and better storage management, but the 'AI-native' marketing claim is questioned — the OpenClaw AI feature is merely an orchestration layer requiring external LLM configuration, not on-device inference. Several software rough edges are noted: global search limited to home directory, Jellyfin subdirectory browsing issues, no keyboard navigation in Photos, and apps needing manual re-enabling after each reboot. The underlying Linux environment is Ubuntu 22.04, which reaches EOL in April 2027 — a concern for a newly launched device. Hardware performance is solid, with under 20% CPU/RAM load during photo indexing and under 10% during 4K streaming.

This $125 discounted Ubiquiti access point is what your home network has been missing

A look at why dedicated Wi-Fi access points like the Ubiquiti UniFi AP AC PRO are a better choice than ISP-provided routers for home networks. The post explains the benefits of PoE-powered APs — flexible placement, VLAN support, and seamless roaming — and highlights a Prime Day deal bringing the UniFi AP AC PRO down to $125. It also touches on use cases like smart home IoT devices, NAS, home labs, and Home Assistant automations.

I turned an old Android phone into a home server, and it outperformed my Raspberry Pi

An old Android phone running Termux can serve as a capable home server that outperforms a Raspberry Pi in several ways. The phone's UFS storage is significantly faster than microSD cards commonly used in Pi setups, and even older flagship Android chips tend to be more powerful than typical SBC processors. Setup involves installing Termux, disabling battery optimization, and assigning a static IP. Services like Jellyfin, Tailscale, ad-blockers, file servers, and lightweight databases run well. The main caveat is battery longevity when kept plugged in constantly, which a smart plug can help manage.

Visualize radio signals with Raspberry Pi 5-based QuadRF 4x4 MIMO software-defined radio tile (Crowdfunding)

QuadRF là một thiết bị SDR 4x4 MIMO dựa trên Raspberry Pi 5 và FPGA Lattice ECP5, hoạt động như camera RF thời gian thực. Nó hiển thị tín hiệu radio 4,9–6,0 GHz dưới dạng lớp phủ AR 30 FPS trên iOS/Android/desktop, tương thích với GNU Radio, SoapySDR và ZeroMQ, mã nguồn mở GPLv2. Các module có thể ghép nối thành mảng phased array cho liên lạc EME, thiên văn vô tuyến, vệ tinh LEO và mạng mesh, khởi động crowdfunding 100.000 USD, giá từ 499 USD, dự kiến giao hàng vào tháng 9/2026.

Lập trình viên nên đọc bài này để khám phá cách kết hợp FPGA và Raspberry Pi 5 tạo ra một hệ thống định hướng sóng vô tuyến tiên tiến, giúp phát triển ứng dụng SDR (Software-Defined Radio) đa kênh MIMO hiệu quả cho các dự án nghiên cứu, phát triển phần mềm và ứng dụng thực tế như truyền thông vệ tinh, radar hoặc hệ thống truyền thông mesh.

Proxmox on microSD cards is technically possible, but terrible transfer speeds aren't the only problem

Running Proxmox on microSD cards is technically feasible but deeply impractical. Installation took over 40 minutes, LXC containers were sluggish, and VMs with desktop environments were nearly unusable — a NixOS install took over 90 minutes. Beyond the terrible transfer speeds (around 30MB/s sustained write), the real dealbreaker is microSD card write endurance. Even with mitigations like disabling pve-ha services and using Log2Ram to reduce write frequency, microSD cards are far too fragile for a home server workload. The experiment serves as a cautionary tale against using microSD cards for Proxmox nodes.

Skip the cloud: this compact Ryzen AI 9 mini PC handles 8B local LLMs and it's at a special Prime Day price

The GEEKOM A9 Max mini PC is on sale for $1,189.15 during Prime Day. It features an AMD Ryzen AI 9 HX 370 processor, 32GB DDR5 RAM, 1TB SSD, and Windows 11 Pro in a compact form factor. The 32GB RAM makes it capable of running 7B–8B local LLMs via tools like Ollama or LM Studio without relying on cloud services. It supports up to 128GB RAM and dual PCIe Gen4 SSDs up to 8TB, offering room to grow. Connectivity includes Wi-Fi 7, USB 4, dual 2.5 GbE, and HDMI 2.1. It's positioned as a compact developer workstation or home lab machine for those wanting to experiment with local AI.