Designing serial tools for hostile benches
Isolation, fault models, and the unglamorous details that make an instrument interface trustworthy.
Engineering notes.
Technical writeups on embedded systems, hardware interfaces, diagnostics, field reliability, and engineering models.
Making ESP32 radio firmware observable
A practical state model for radios, storage, an LCD, and a browser interface sharing one constrained device.
Three ways home for field firmware
Why a browser flasher, UF2 fallback, and explicit bootloader path are one recovery system rather than redundant conveniences.