- fltrz proposed an unconventional transimpedance-amplifier topology in which the feedback resistor is eliminated and the ADC’s differential input impedance itself becomes the feedback element; the ADC’s analog-ground pin is tied to the op-amp’s virtual ground instead of system ground, theoretically removing the resistor’s thermal noise.

- Discussion with archels highlighted practical obstacles: most ADC inputs are switched-capacitor (not purely resistive), exhibit time-varying impedance during sampling, and expect a low-impedance ground reference—casting doubt on stability and noise performance of the proposed circuit.

- fltrz plans to test the idea by downloading SPICE models for several ADC architectures (SAR, sigma-delta, etc.) and simulating the configuration with representative signals.

- fltrz also described a home acoustics experiment: purchasing multiple earbuds with microphones and flexible tubing to attempt measuring otoacoustic emissions, noting the need for attenuating earplugs to complete the setup.

- lsneff pointed out that JLCPCB’s SMT assembly service now stocks all required parts for their custom boards, underscoring how accessible small-scale electronics manufacturing has become.

- kanzure shared a GitHub pull request on “concurrency control and snapshot isolation” (https://github.com/rxin/db-readings/pull/16) as background reading for distributed-systems topics relevant to future bio-data infrastructure.

- fenn and kanzure exchanged links to videos documenting the progression of the human deadlift record from 500 kg (Eddie Hall) to 501 kg (Hafþór Björnsson), framing it as a symbolic one-upmanship milestone at the edge of human performance.

- lsneff used Sci-Hub to retrieve a paper on using X7R multilayer ceramic capacitors as micro-actuators with low hysteresis, suggesting potential applications in compact, low-power mechatronic or haptic devices.