OpenPrinter is an open-source, repairable inkjet printer designed for makers, artists, and anyone who wants a non-disposable device under their control. It rejects proprietary drivers and cartridge DRM, favoring standard mechanical components and modular parts so users can assemble, modify, refill, and repair it. The design supports both standard sheets and paper rolls, includes an integrated cutter for banners or strips, and can be mounted on a wall or sit on a desktop. The stated aim is longevity and customizability: users choose black or color cartridges (or both), refill inks, and adapt the hardware instead of being forced into vendor lock-in.
The hardware and software specifics emphasize openness and practical compatibility: 600 dpi mono and 1200 dpi color print, compatibility with HP 63/302 printheads, a Raspberry Pi Zero W as the main board, and an STM32 MCU on the cartridge board. The interface is a 1.47-inch 172×320 TFT with a jogger wheel; connectivity includes USB-C (host), USB-A for storage, Wi‑Fi 802.11ac, and Bluetooth 4.1. Power is 24 V DC and dimensions are 50 × 10 × 11 cm. It uses the CUPS print server for Windows, macOS, Linux, Android, and iPhone support, and all design files, firmware, and BOMs are released under CC BY‑NC‑SA 4.0 to encourage repair, upgrades, and community contribution.
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The Altair 8800 has been reborn as an Arduino-based emulator and kit, allowing hobbyists to build a cycle-accurate replica. The project was inspired by early personal computer history and aims to make the classic machine accessible and affordable. (adwaterandstir.com)
Esp32sim is an open-source emulator that allows users to run ESP32 firmware directly in their browser or locally without hardware or cloud services. It provides a way for developers to test and develop firmware easily and cost-effectively. (github.com)
A calculator helps users determine which Mac models can run specific large language models (LLMs) based on memory and bandwidth. Renting a high-end Mac like the M4 Pro with 64 GB costs around $286/month and can run models such as Llama 3.3 70B at about 5.7 tokens per second. (macyou.co)
Siltop is a system monitor for Apple Silicon Macs that displays real-time watts, clocks, and temperatures in the terminal without requiring sudo or telemetry. It aims to provide a simple and honest monitoring tool for Mac users with Apple chips. (github.com)
A hardware simulator for the Commodore 64 has been developed and shared on GitHub, featuring code, documentation, and testing tools. It enables emulation of the classic computer system for enthusiasts and developers. (github.com)
Brax Wink is a modular, open-source mobile phone designed to prioritize user privacy. It aims to provide a highly secure and customizable device for users concerned about privacy. (braxtech.net)
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