Everypin introduces PwrBlock 323 programmable power supply for test fixtures2 sources

Finnish company Everypin has introduced PwrBlock 323, a programmable power supply designed for integration into automated test fixtures. The device provides a single non-isolated output from 1 to 32 V at up to 3 A, reaching approximately 92 W when supplied by a 100-W USB-C Power Delivery source. A separate description identifies the gadget as STMicro STM32-powered and capable of controlling and measuring power via SCPI. Everypin is currently crowdfunding the device.

Homebrew 68K Machine Features PCI Bus

maniek86 has constructed a homebrew computer centered on a Motorola 68000 processor running at 10 MHz, integrating the Peripheral Component Interconnect (PCI) bus. This architecture defies expectations, as PCI became the standard for PC add-on cards in 1992, largely replacing older standards like ISA. The build relies on protoboard and loose wiring rather than custom PCBs. A Xilinx Spartan II FPGA (XC2S100) serves as the PCI bridge, providing two 32-bit, 5-volt, interrupt-capable slots. The system includes 1 MB of SRAM, 4 KB of ROM, and an MC68681P for I/O control. A XC95144XL CPLD handles glue logic.

Miniaturized Atari 2600 console brings retro gaming to a smaller form factor

Nick has successfully miniaturized the Atari 2600 console, reducing its footprint to less than half the original size while preserving authentic hardware. The project replaces standard components with smaller switches and buttons, and removes obsolete elements like the RF modulator. A custom-designed PCB enables this significant spatial reduction, and the cartridge port has been repositioned to facilitate a future handheld form factor. This build prioritizes original circuitry over modern emulation, offering a distinct approach to retro gaming preservation.

Steam Controller Runs Zork Without A Computer

Owen Feldman successfully ran the classic text adventure Zork on a Steam Controller by emulating an Intel 8080 CPU and CP/M environment directly on the device. He wrote a Rust program to handle the emulation, streaming input and output over USB since the controller lacks a keyboard or screen. Feldman utilized an undocumented Valve tool to flash custom firmware, a process that required him to brick the device twice before succeeding. This project demonstrates the peripheral’s unexpected computational versatility, turning a simple input device into a self-contained retro computing platform.

Deskbuddy ESP32 dashboard displays time, weather, and notes

LextZip’s customizable mini dashboard merges an ESP32 touchscreen with modular software widgets, offering a compact, always-visible display for time, weather, notes, and timers. This hardware solution eliminates the need to check phones or open extra apps, functioning as a clock, focus timer, or general desk status screen. The project remains in development, inviting users to tailor the interface to specific workflow needs. By consolidating essential data into a single physical unit, the device aims to reduce digital distraction and streamline daily desk operations.

Manufacturers blend PLLA to fix PLA filament’s notorious brittleness problem

PLA filament remains notoriously brittle, a flaw that persists despite decades of material engineering. Poly(lactic acid) derives from renewable lactic acid and offers compostability at temperatures exceeding 65 C, yet it lacks the durability of alternatives like PETG. Manufacturers now blend PLLA and PDLA, use plasticizers, and manipulate crystalline states to improve performance. Modern spools reflect these complex adjustments, though users still encounter failure points. Online advice often blames moisture and hydrolysis, suggesting drying as a fix. Understanding the polymer’s fundamental stereochemistry and degradation mechanics provides a clearer path to troubleshooting than simple drying tips.

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