But it’s a pretty cool rabbit hole that leads to homebrew neon seven-segment displays on a calculator with relay logic. It’s a little thin on documentation so far, but that’s because [Mark ...

Lupus is an unpredictable and misunderstood autoimmune disease. It is difficult to diagnose, hard to live with, and a challenge to treat. Lupus has a range of symptoms, and strikes without warning.

The calculator’s architecture is intentionally modular, with the display and keyboard housed in completely separate enclosures communicating by a serial interface. If the bulkiness alone doesn ...

“[My representative] couldn't have been more empathetic and understanding to my situation, even sharing his own similar story to help relate to me,” said Tracey C. from Bay St. Louis, Mississippi.