• A participant began self-tracking sleep and other biological metrics as a low-cost proxy for blood-based biomarkers, illustrating the DIY quantified-self approach when clinical labs are inaccessible.

• The DIN 3105-2 open-hardware standard draft was debated: fenn argued it over-emphasizes “official certification,” risks excluding individuals, and should instead mandate that every physical device carry a durable pointer (QR code, name+version) to its complete source and build specifications.

• hoijui clarified that DIN 3105-1 is fixed, but 3105-2 is now being developed openly; its twin goals are to nudge industry toward open hardware and, more importantly, to raise documentation quality and collaboration practices across the open-hardware ecosystem.

• Discussion highlighted tooling gaps: an “Open-O-Meter” auto-scorer currently favors PCB-centric projects and under-rates non-electronic hardware like Hexayurt; participants called for automated generation of technical drawings from CAD and better metrics that capture the full spectrum of hardware openness.

• Links and resources circulated included the epigenetic-aging-reversal trial (Fahy et al., Aging Cell 2020), Olimex’s forthcoming i.MX8QuadMax-based open-hardware Linux board, an open-source vacuum manifold for COVID-19 RNA extraction, and new Bitcoin developer-update transcripts added to diyhpl.us/wiki.