Ryan Malloy 6d40c9e30b Add project docs: development journal, architecture, circuit design ...

Three reference documents built from conversation history and codebase:
- development-journal.md: chronological engineering log across 4 sessions
  (SPICE validation, R2 fix, ESP32 port, multi-protocol refactor, hardening)
- architecture.md: AutoWire composition pattern, concurrency model,
  protocol comparison, defensive design
- circuit-design.md: PC817 optocoupler RX/TX paths, R2 sweep data,
  K-line compatibility analysis, SPICE netlist inventory

Also updates CLAUDE.md with OBD-II hardening notes from code review.

2026-02-13 06:25:19 -07:00

docs

Add project docs: development journal, architecture, circuit design

2026-02-13 06:25:19 -07:00

firmware

Add project docs: development journal, architecture, circuit design

2026-02-13 06:25:19 -07:00

reference

K-line compatibility analysis: optocoupler vs 510 ohm pull-up

2026-02-13 02:18:20 -07:00

CLAUDE.md

Add project docs: development journal, architecture, circuit design

2026-02-13 06:25:19 -07:00

Description

BMW I/K-Bus + OBD-II K-line interface board (ESP32, optocoupler isolated)

687 KiB

Languages

MDX 60.4%

C++ 35.7%

C 1.2%

JavaScript 0.8%

Makefile 0.7%

Other 1.2%