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Recast is open-sourcing a $25 balloon tracker and weather sensor to make weather balloon launches more accessible to hobbyists.
A hobbyist engineer designed and built a gravity-driven trebuchet using a pulley system and carbon fiber components to achieve projectile speeds of 716 mph, approaching the speed of sound.
A new Intel Itanium (IA-64) emulator from Yufeng Gao and gdwnldsKSC can boot Windows Server 2003 and Windows XP 64-bit, though it runs very slowly. The code is expected to be open-sourced later.
A 13-year-old built Formicarium, a web app for managing ant colonies with statistics, care reminders, and no sign-up required.
The Old Computer Challenge is an annual community event where retro computing and digital minimalism enthusiasts use limited vintage hardware (initially 512MB RAM) for a week, with a theme like 'Make Something' for 2026.
Optocam Zero is a compact DIY digital camera based on Raspberry Pi Zero, using off-the-shelf components and 3D-printed parts. It features autofocus, filters, GIF recording, and easy image transfer via hotspot.
QSOE project v0.1 is released, providing a QNX-compatible operating system with two microkernel variants (custom Skimmer kernel and seL4-based), shared userspace, and support for SiFive Unmatched RISC-V hardware.
A personal account of hunting for million-digit prime numbers using a home computer setup.
A developer ran DeepSeek-V4-Flash on a Raspberry Pi 5 by streaming model weights from an NVMe SSD, achieving 1.3 tokens/second at 8 watts, demonstrating the feasibility of frontier-adjacent open-weight models on low-cost, offline hardware.
The article details a project to revive the analog teletext system for use in ham radio, leveraging modern technology and open-source fonts to recreate the classic teletext experience for amateur radio operators.
The user is experimenting with OFDM using a Pluto SDR clone, achieving transmission and reception with various modulation schemes and a Viterbi decoder. A video demo is upcoming.
Garry Tan comments on the current state of AI in San Francisco, comparing it to early AGI with high costs and a priesthood of builders, but predicts personal AI becoming ubiquitous.
A hobbyist project demonstrates hosting a simple website on an 8-bit AVR microcontroller using SLIP over a serial connection to a Linux PC, avoiding the need for Ethernet hardware.
An exhibit chronicles the computer hobby movement in Canada from the mid-1970s to the late 1980s, focusing on the Toronto Region Association of Computer Enthusiasts (TRACE) and its role in bringing personal computing into Canadian homes.
The Cerelog ESP-EEG is an affordable 8-channel biosensing board using the ADS1299 chip, offering cleaner signal with closed-loop active bias at a lower price point than OpenBCI. It supports open-source firmware and software like Brainflow, but has limitations such as USB-only connectivity and non-commercial use restrictions.
A review of the DeskPi Super4C, a 4-node Raspberry Pi CM5 cluster board, highlighting its improved remote management and redundant power/Ethernet, while noting that SBC clusters are a poor value but fun for hobbyist HPC tinkering.