Tootfinder

Polish engineer Piotr Ostapowicz has created what may be the world's smallest 8-bit Atari computer recreation, the "Atarino". The entire system—processor, graphics chips, sound hardware, and memory controllers—fits on a module measuring just 2×1.5 centimeters (about 0.79×0.59 inches), roughly the size of a postage stamp:

Polish engineer creates postage stamp-sized 1980s Atari computer
Hobby project shrinks 1980s computer platform that pierced the Iron Curtain.

Genetic Algorithm-Based Inverse Design of Guided Wave Planar Terahertz Filters
Ali Dehghanian, Thomas Darcie, Levi Smith
https://arxiv.org/abs/2506.03372 h…

Genetic Algorithm-Based Inverse Design of Guided Wave Planar Terahertz Filters
We present a genetic algorithm (GA)-based inverse design framework for synthesizing high-performance planar terahertz (THz) filters integrated with coplanar striplines (CPSs). The method efficiently explores high-dimensional design spaces to generate filter geometries matching user-defined S-parameter magnitude and phase responses, while enforcing structural connectivity for compatibility with terahertz system-on-chip (TSoC) platforms. To accelerate optimization, filter performance is evaluated…

An Advanced Cyber-Physical System Security Testbed for Substation Automation
Akila Herath, Chen-Ching Liu, Junho Hong, Mansi Girdhar
https://arxiv.org/abs/2505.24021

An Advanced Cyber-Physical System Security Testbed for Substation Automation
A Cyber-Physical System (CPS) testbed serves as a powerful platform for testing and validating cyber intrusion detection and mitigation strategies in substations. This study presents the design and development of a CPS testbed that can effectively assess the real-time dynamics of a substation. Cyber attacks exploiting IEC 61850-based SV and GOOSE protocols are demonstrated using the testbed, along with an analysis on attack detection. Realistic timing measurements are obtained, and the time fra…