justin
c94caefd50
In-place updating CLI dashboard for watching data while cranking/running. Pure-ANSI (no new deps; works on Windows 10+ terminals). - Color-coded gauges (green/yellow/red) by no-start thresholds - Live min/max per gauge -> captures PEAK ICP during a crank - ASCII bars for ICP and FICM main voltage - Presets: crank (ICP/FICM/batt/RPM, fastest), vitals (default), full - Dead-PID auto-skip keeps refresh rate up when 09xx FICM PIDs no-respond - --dash-log PATH writes a CSV while you watch (streaming log preserved) - q=quit, r=reset min/max; cross-platform non-blocking key input Validated: render + decoders vs the truck's real scan bytes, and the full dashboard() loop via a mock ELM (ICP climb across the 500psi firing threshold, peak capture, battery-sag capture, CSV logging, clean exit). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016yT89n4zR4qbrySoSiEyZs
71 lines
3.2 KiB
Markdown
71 lines
3.2 KiB
Markdown
# ford-obd
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Minimal **ELM327 OBD-II code reader** with a **Ford 6.0L Power Stroke no-start triage**,
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built for a cheap CH340 ELM327 USB adapter. Works on any OBD-II vehicle for generic
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codes/PIDs; the triage notes are 6.0-specific.
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Created as a stopgap while [forscan.org](https://forscan.org) was offline — it covers
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reading/clearing codes and the basics, not Ford-enhanced diesel PIDs (see Scope below).
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## Features
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- Read **stored** (mode 03), **pending** (mode 07), **permanent** (mode 0A) DTCs
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- Decode P/C/B/U codes, with common **6.0 codes** described and **no-start suspects flagged**
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- **Clear** codes (mode 04) — guarded behind `--clear` + a typed `CLEAR` confirmation,
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then re-reads to show any code that returns immediately (active fault)
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- Key **live values** (coolant, IAT, MAP, module voltage, RPM, load, throttle) + battery voltage
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- 6.0 Power Stroke **no-start triage** checklist (FICM, ICP, cam/crank, batteries, fuel)
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## Setup (Windows)
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1. Install the CH340 driver (WCH `CH341SER`) so the adapter appears as
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`USB-SERIAL CH340 (COMx)` in Device Manager → Ports.
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2. Install Python from <https://www.python.org/downloads/> — tick **Add Python to PATH**.
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## Usage
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```
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python obd_reader.py # auto-detect the COM port
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python obd_reader.py COM5 # force a port
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python obd_reader.py COM5 9600 # force port + baud (default 38400)
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python obd_reader.py COM5 --clear # read, then optionally clear (asks to confirm)
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python obd_reader.py COM5 -v # verbose: show raw ELM327 traffic
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```
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### Live dashboard (real-time gauges)
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Updates in place as you crank or run the engine — color-coded, with live
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min/max so a crank's **peak ICP** is captured. No extra dependencies (ANSI;
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works on any Windows 10+ terminal). `q` quits, `r` resets min/max.
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```
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python obd_reader.py COM5 --dash # vitals preset (ICP, FICM, IPR, batt, RPM, temps)
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python obd_reader.py COM5 --dash crank # cranking preset: ICP / FICM main / batt / RPM (fastest)
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python obd_reader.py COM5 --dash full # every PID
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python obd_reader.py COM5 --dash crank --dash-log crank.csv # + write a CSV while you watch
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```
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**No-start use:** run `--dash crank`, then crank. A healthy 6.0 builds
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**~500+ psi ICP within 1–2 s**; if ICP stalls below 500 (red), that confirms
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the high-pressure oil bleed-off. FICM Main should hold ~48V. The `--dash-log`
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CSV is your streaming log — paste it back for analysis.
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Note: the FICM PIDs (`09xx`) are `[DOC]` (not yet confirmed on this truck); if
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they read `--`, they auto-drop after a few frames so the refresh rate stays up.
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Or just double-click **`RUN_OBD.bat`** on Windows (auto-installs `pyserial`).
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On the truck: plug into the OBD port under the dash, key to **RUN** (engine off is fine
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for codes), then run the tool.
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## Scope / honesty
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A generic ELM327 reads standard OBD-II only: codes, generic PIDs, port voltage. It does
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**not** read Ford-enhanced diesel PIDs (ICP, FICM main/sync voltage, IPR%) — those need
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FORScan. For FICM/ICP numbers, measure at the FICM with a meter, or use FORScan when it's
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available. Default baud is 38400 (measured on the CH340 adapter); try 9600 if you get garbage.
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## Requirements
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`pyserial` (`pip install pyserial`). Tested against a QinHeng CH340 ELM327 v1.5 clone.
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