Muxcard is a credit-card-sized, ESP32-C3–based computer with an e-paper display and NFC, demonstrated as an ultra-thin prototype with ongoing DIY hardware work.
A hardware archeology piece on the Griffin iMate: an ADB-to-USB adapter from 1998–2008 that hides an undocumented CR1225 battery powering a USB wake feature, with a teardown revealing noise issues, a fix via decoupling, and a regulatory note about FCC filings for similar devices.
Open-source zero-power hackathon NFC badges built around RP2040 with e-ink, plus explicit manufacturing cost and BOM data.
A niche PDP-11 based homebrew computer project (DCJ11HackPlus) on Codeberg with 27 commits, 31 MiB repo, and hardware-focused updates.
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