* Clarified PDM microphone behavior: data unit width is effectively 16-bit in PDM mode * Updated microsecond timing with Arduino-ESP32 note about direct timer usage * Added "Precision waiting" subsection: coarse delay then busy-spin for microsecond accuracy * Expanded error-handling docs with non-aborting check example * Adjusted logging example presentation for human readers --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: softhack007 <91616163+softhack007@users.noreply.github.com>