Rename project to OBDash + per-metric colored multi-axis

Rename: the app is vehicle-agnostic, so 'ford-obd' was wrong. Rebranded all
code/docs/profile authors to OBDash; Gitea repo renamed justin/ford-obd ->
justin/obdash (remote + description updated). Ford the make and the
ford-6.0-powerstroke profile are unchanged (that vehicle really is a Ford).

Multi-axis upgrade (per request):
- MultiAxisPlot now gives each METRIC its own Y axis, each axis colored to
  match its line; the primary metric owns the LEFT axis, others stack right.
- Click a line to promote it to the left axis (sigClicked -> set_primary).
- Cleaner teardown (no removeItem warnings); axis label no longer doubles the
  unit; Normalize round-trips.

Validated headless: colored per-metric axes, promote-to-left, gauge view,
normalize toggle, profile switch; obdcore + diagnostics tests pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016yT89n4zR4qbrySoSiEyZs

ARCHITECTURE.md

@@ -1,4 +1,4 @@
-# ford-obd — Architecture & Roadmap
+# OBDash — Architecture & Roadmap
 
 Plan for growing the terminal `obd_reader.py` into a graphical Windows scan
 tool for the 6.0L Power Stroke, on a shared headless core.

README.md

@@ -1,4 +1,4 @@
-# ford-obd
+# OBDash
 
 Minimal **ELM327 OBD-II code reader** with a **Ford 6.0L Power Stroke no-start triage**,
 built for a cheap CH340 ELM327 USB adapter. Works on any OBD-II vehicle for generic

diagnostics/2026-06-29-no-start/README.md

@@ -1,6 +1,6 @@
 # 2026-06-29 — 6.0 Power Stroke no-start session
 
-In-cab diagnostic session using the `ford-obd` tool on the truck.
+In-cab diagnostic session using the `OBDash` tool on the truck.
 Charger on "12V Hi" was attached for most of the session.
 
 ## Symptoms

gui/__init__.py

@@ -1,4 +1,4 @@
-"""PySide6 + pyqtgraph GUI for ford-obd (P1 shell).
+"""PySide6 + pyqtgraph GUI for OBDash (P1 shell).
 
 Run:  python run_gui.py      (or)   python -m gui
 """

gui/main.py

@@ -1,4 +1,4 @@
-"""ford-obd GUI -- vehicle-agnostic scanner shell.
+"""OBDash GUI -- vehicle-agnostic scanner shell.
 
 Menu bar: File (captures) | Profile (vehicle profiles) | View | Help.
 Toolbar:  port / baud / mock / connect + per-profile preset buttons.
@@ -98,7 +98,7 @@ class MainWindow(QtWidgets.QMainWindow):
         self.theme_act = self._act(viewm, "Light Theme", self._toggle_theme, checkable=True)
 
         helpm = mb.addMenu("&Help")
-        self._act(helpm, "About ford-obd", self._about)
+        self._act(helpm, "About OBDash", self._about)
         self._act(helpm, "PID Confidence Legend", self._legend)
         self._act(helpm, "Active Profile Info", self._profile_info)
 
@@ -375,7 +375,7 @@ class MainWindow(QtWidgets.QMainWindow):
         self._refresh_title()
 
     def _refresh_title(self):
-        self.setWindowTitle(f"ford-obd  —  {self.ctl.profile.name}")
+        self.setWindowTitle(f"OBDash  —  {self.ctl.profile.name}")
 
     def _load_profile(self, path):
         if self.ctl.connected:
@@ -643,10 +643,10 @@ class MainWindow(QtWidgets.QMainWindow):
 
     # ---------- help ----------
     def _about(self):
-        QtWidgets.QMessageBox.about(self, "About ford-obd",
+        QtWidgets.QMessageBox.about(self, "About OBDash",
-            "ford-obd — vehicle-agnostic OBD-II scanner\n\n"
+            "OBDash — vehicle-agnostic OBD-II scanner\n\n"
             "Open source. Vehicle data lives in JSON profiles you can add/share.\n"
-            "git.jpaul.io/justin/ford-obd")
+            "git.jpaul.io/justin/obdash")
 
     def _legend(self):
         QtWidgets.QMessageBox.information(self, "PID confidence",

gui/widgets.py

@@ -1,5 +1,5 @@
-"""Custom widgets for the ford-obd GUI: a unit-grouped multi-axis plot, a
+"""Custom widgets for the OBDash GUI: a multi-axis plot (one colored axis per
-simple single-axis plot, and an arc gauge / gauge grid.
+metric), a single-axis plot, and a car-style gauge / gauge grid.
 
 All three plot/gauge containers share a small interface so the main window can
 swap between them:  add_curve(key,name,unit,color) / set_data(key,xs,ys) /
@@ -10,8 +10,6 @@ import math
 from PySide6 import QtCore, QtGui, QtWidgets
 import pyqtgraph as pg
 
-MAX_EXTRA_AXES = 4          # base left axis + up to 4 right axes (5 units shown)
-
 
 class SinglePlot(QtWidgets.QWidget):
     """One shared Y axis. Used for the Normalize (% of range) mode."""
@@ -58,9 +56,14 @@ class SinglePlot(QtWidgets.QWidget):
 
 
 class MultiAxisPlot(QtWidgets.QWidget):
-    """Overlay with one Y axis PER UNIT (psi / V / rpm / C / %), so mixed-scale
+    """Overlay with one Y axis PER METRIC, each axis colored to match its line,
-    signals are all readable at their true values. Curves are grouped by unit;
+    so mixed-scale signals are all readable at their true values.
-    each extra unit gets its own right-hand axis + linked ViewBox."""
+
+    The 'primary' metric owns the LEFT axis; the rest stack on the right.
+    Click a line to promote it to the left axis. Beyond MAX_RIGHT extra metrics,
+    overflow curves share the primary axis (rare; plot fewer to compare)."""
+
+    MAX_RIGHT = 5
 
     def __init__(self):
         super().__init__()
@@ -73,40 +76,29 @@ class MultiAxisPlot(QtWidgets.QWidget):
         self.p.setLabel("bottom", "time", units="s")
         self.legend = self.p.addLegend(offset=(10, 10))
         self.base_vb = self.p.vb
-        self._units = {}        # unit -> {vb, ax, base}
+        self._curves = {}       # key -> {color,name,unit,curve,vb,ax}
-        self._curves = {}       # key -> {curve, unit}
+        self._order = []        # insertion order of keys
-        self._next_col = 3
+        self._primary = None
         self.base_vb.sigResized.connect(self._sync)
 
-    def _ensure_unit(self, unit):
-        e = self._units.get(unit)
-        if e is not None:
-            return e
-        if not self._units:                         # first unit -> base left axis
-            self.p.setLabel("left", unit)
-            e = {"vb": self.base_vb, "ax": self.p.getAxis("left"), "base": True}
-        elif len(self._units) - 1 < MAX_EXTRA_AXES:  # add a right axis
-            vb = pg.ViewBox()
-            ax = pg.AxisItem("right")
-            self.p.layout.addItem(ax, 2, self._next_col)
-            self._next_col += 1
-            self.p.scene().addItem(vb)
-            ax.linkToView(vb)
-            vb.setXLink(self.p)
-            ax.setLabel(unit)
-            e = {"vb": vb, "ax": ax, "base": False}
-            self._sync()
-        else:                                        # out of axes -> reuse base
-            e = self._units[next(iter(self._units))]
-        self._units[unit] = e
-        return e
-
     def add_curve(self, key, name, unit, color):
-        e = self._ensure_unit(unit)
+        if key in self._curves:
+            return
         curve = pg.PlotCurveItem(pen=pg.mkPen(color, width=2), name=name)
-        e["vb"].addItem(curve)
+        curve.setClickable(True, width=8)
-        self.legend.addItem(curve, name)
+        curve.sigClicked.connect(lambda *_a, k=key: self.set_primary(k))
-        self._curves[key] = {"curve": curve, "unit": unit}
+        self._curves[key] = {"color": color, "name": name, "unit": unit,
+                             "curve": curve, "vb": None, "ax": None}
+        self._order.append(key)
+        if self._primary is None:
+            self._primary = key
+        self._rebuild()
+
+    def set_primary(self, key):
+        """Move this metric's axis to the LEFT (make it the primary axis)."""
+        if key in self._curves and key != self._primary:
+            self._primary = key
+            self._rebuild()
 
     def set_data(self, key, xs, ys):
         c = self._curves.get(key)
@@ -117,30 +109,94 @@ class MultiAxisPlot(QtWidgets.QWidget):
         c = self._curves.pop(key, None)
         if not c:
             return
-        e = self._units.get(c["unit"])
+        self._order.remove(key)
-        if e:
+        self._detach(c)
-            e["vb"].removeItem(c["curve"])
+        if self._primary == key:
-        try:
+            self._primary = self._order[0] if self._order else None
-            self.legend.removeItem(c["curve"])
+        self._rebuild()
-        except Exception:
-            pass
 
     def clear(self):
-        for key in list(self._curves):
+        for c in self._curves.values():
-            self.remove_curve(key)
+            self._detach(c)
+        self._curves = {}
+        self._order = []
+        self._primary = None
+        self.legend.clear()
 
     def set_y_label(self, _text):
-        pass                                         # multi-axis labels itself per unit
+        pass                                         # labels itself per metric
 
     def set_background(self, bg):
         self.glw.setBackground(bg)
 
+    # -- internals --
+    def _detach(self, c):
+        """Remove a curve from its current ViewBox and tear down its extra axis
+        (the base left axis is kept). Idempotent -- safe to call repeatedly."""
+        cur = c["curve"]
+        vb = c.get("vb")
+        if vb is not None:
+            try:
+                vb.removeItem(cur)
+            except Exception:
+                pass
+        ax = c.get("ax")
+        if ax is not None and ax is not self.p.getAxis("left"):
+            try:
+                self.p.layout.removeItem(ax)
+            except Exception:
+                pass
+            sc = ax.scene()
+            if sc is not None:
+                sc.removeItem(ax)
+        if vb is not None and vb is not self.base_vb:
+            sc = vb.scene()
+            if sc is not None:
+                sc.removeItem(vb)
+        c["vb"] = None
+        c["ax"] = None
+
+    def _rebuild(self):
+        for c in self._curves.values():
+            self._detach(c)
+        self.legend.clear()
+        if self._primary is None:
+            return
+        order = [self._primary] + [k for k in self._order if k != self._primary]
+        col = 3
+        left = self.p.getAxis("left")
+        for idx, key in enumerate(order):
+            c = self._curves[key]
+            cur = c["curve"]
+            pen = pg.mkPen(c["color"])
+            if idx == 0:                              # primary -> left axis
+                self.base_vb.addItem(cur)
+                left.setLabel(c["name"])             # name already carries the unit
+                left.setPen(pen); left.setTextPen(pen)
+                c["vb"] = self.base_vb; c["ax"] = left
+            elif idx <= self.MAX_RIGHT:               # right axis, colored to line
+                vb = pg.ViewBox()
+                ax = pg.AxisItem("right")
+                self.p.layout.addItem(ax, 2, col); col += 1
+                self.p.scene().addItem(vb)
+                ax.linkToView(vb); vb.setXLink(self.p)
+                ax.setLabel(c["name"])
+                ax.setPen(pen); ax.setTextPen(pen)
+                vb.addItem(cur)
+                c["vb"] = vb; c["ax"] = ax
+            else:                                     # overflow -> primary axis
+                self.base_vb.addItem(cur)
+                c["vb"] = self.base_vb; c["ax"] = None
+            self.legend.addItem(cur, c["name"])
+        self._sync()
+
     def _sync(self):
         rect = self.base_vb.sceneBoundingRect()
-        for e in self._units.values():
+        for c in self._curves.values():
-            if not e["base"]:
+            vb = c.get("vb")
-                e["vb"].setGeometry(rect)
+            if vb is not None and vb is not self.base_vb:
-                e["vb"].linkedViewChanged(self.base_vb, e["vb"].XAxis)
+                vb.setGeometry(rect)
+                vb.linkedViewChanged(self.base_vb, vb.XAxis)
 
 
 class ArcGauge(QtWidgets.QWidget):

handoff.md

@@ -1,6 +1,6 @@
-# Handoff — ford-obd / 6.0 Power Stroke no-start
+# Handoff — OBDash / 6.0 Power Stroke no-start
 
-Pick-up notes for diagnosing the truck in the cab. Repo: `git.jpaul.io/justin/ford-obd` (private).
+Pick-up notes for diagnosing the truck in the cab. Repo: `git.jpaul.io/justin/obdash` (private).
 
 ## TL;DR — what to do at the truck
 1. CH340 ELM327 adapter → OBD port (under dash, driver side).
@@ -78,10 +78,10 @@ The 6.0 needs, to fire: **good batteries → FICM ~48V → ICP ~500 psi → fuel
   [crank-test-2026-06-30.txt](diagnostics/2026-06-29-no-start/crank-test-2026-06-30.txt).
   Next: physical inspection (IPR valve first, then STC fitting, then
   oil rail O-rings).
-- Pushed to `git.jpaul.io/justin/ford-obd`, branch `main`.
+- Pushed to `git.jpaul.io/justin/obdash`, branch `main`.
 
 ## To resume with Claude from the cab
-Mention: "6.0 Power Stroke no-start, using the ford-obd tool (git.jpaul.io/justin/ford-obd)".
+Mention: "6.0 Power Stroke no-start, using the OBDash tool (git.jpaul.io/justin/obdash)".
 Then **paste the tool's full output** (codes + live values). Useful to also say: cranks vs.
 no-crank, hot vs. cold, what changed before it died, and FICM/ICP readings if you metered them.
 

profiles/README.md

@@ -1,7 +1,7 @@
 # Vehicle Profiles
 
 Each `*.json` file here is a **vehicle profile** — pure data that makes the
-ford-obd app vehicle-agnostic. A profile defines a vehicle's PIDs (with safe
+OBDash app vehicle-agnostic. A profile defines a vehicle's PIDs (with safe
 scaling formulas), DTC meanings, and named presets. Load one in the app via
 **Profile → Load**, or drop a new file in this folder and it appears in the list.
 

profiles/ford-6.0-powerstroke.json

@@ -6,7 +6,7 @@
     "model": "Super Duty / Excursion",
     "years": "2003-2007",
     "engine": "6.0L Power Stroke diesel",
-    "author": "ford-obd project",
+    "author": "OBDash project",
     "version": "1.1.0",
     "protocol": "auto",
     "notes": "PID addresses + scaling corrected/verified by the ford-60-pid-hunt workflow (2026-06-29) and on-truck reads (2026-06-30). confidence: verified = multi-source or read on a real 6.0; doc = corroborated in sources, not yet read on-vehicle; tentative = single-source / disputed scaling. ICP_DES (desired ICP) has no public Mode-22 DID -> FORScan-only, not included."

profiles/ford-mustang-cobra-4.6-1996.json

@@ -6,7 +6,7 @@
     "model": "Mustang SVT Cobra",
     "years": "1996",
     "engine": "4.6L DOHC 32-valve modular V8 (naturally aspirated, EEC-V, MAF-metered)",
-    "author": "ford-obd project",
+    "author": "OBDash project",
     "version": "0.1.0",
     "protocol": "SAE J1850 PWM",
     "notes": "First OBD-II model year on early EEC-V; Ford SCP J1850 PWM at 41.6 kbps. MAF-based airflow (no MAP/speed-density). V8 with two banks: dual-bank fuel trims and pre/post-cat narrowband HO2S included. CAN-era PIDs (0142 module voltage, 0146 ambient, 0133 baro, 012F fuel level) not supported and omitted. No verifiable manufacturer-enhanced (mode 22) PIDs for this EEC-V SCP vehicle; generic ELM327 adapters widely reported to fail enhanced sessions on Ford SCP PWM. All reliable data is in the standard SAE J1979 mode-01 set. Validated: all formulas safe-evaluator-clean; fuel-trim vmax normalized to +-100."

profiles/ford-mustang-gt-4.6-1996.json

@@ -6,7 +6,7 @@
     "model": "Mustang GT",
     "years": "1996",
     "engine": "4.6L SOHC 2-valve modular V8 (EEC-V, MAF-metered)",
-    "author": "ford-obd project",
+    "author": "OBDash project",
     "version": "0.1.0",
     "protocol": "SAE J1850 PWM",
     "notes": "EEC-V PCM on SAE J1850 PWM (41.6 kbaud, OBD-II pins 2 & 10). MAF-metered V8 with dual exhaust: four heated O2 sensors (B1S1/B1S2/B2S1/B2S2) and two fuel-trim banks. Bank 1 = passenger side (cyl #1). Standard SAE J1979 Mode-01 backbone; no verifiable mode-22 enhanced PIDs published for this early EEC-V generation."

profiles/generic-obd2.json

@@ -6,7 +6,7 @@
     "model": "Any OBD-II vehicle (1996+)",
     "years": "1996+",
     "engine": "any",
-    "author": "ford-obd project",
+    "author": "OBDash project",
     "version": "1.0.0",
     "protocol": "auto",
     "notes": "Standard SAE J1979 Mode-01 PIDs only -- supported by essentially every OBD-II vehicle. Use as a base/starting point for a new vehicle profile, then add manufacturer-enhanced Mode-22 PIDs. Decodes are the SAE-standard formulas."

profiles/jeep-wrangler-4.0-1997.json

@@ -6,7 +6,7 @@
     "model": "Wrangler TJ",
     "years": "1997",
     "engine": "4.0L I6 (242 cu in)",
-    "author": "ford-obd project",
+    "author": "OBDash project",
     "version": "0.1.0",
     "protocol": "ISO 9141-2",
     "notes": "Chrysler/Jeep OBD-II over ISO 9141-2 K-line (used by Chrysler/Jeep for generic OBD-II through the early 2000s, later replaced by ISO 15765 CAN; Chrysler never used J1850). Speed-density: MAP sensor, no MAF. Single bank (inline-6): fuel trim bank 1 only, two narrowband O2 sensors (B1S1 upstream, B1S2 post-cat). Generic Mode-01 only; no generic service-22 enhanced channel on this JTEC PCM (Chrysler enhanced data lives on the proprietary SCI bus)."

profiles/mercury-mountaineer-4.6-2006.json

@@ -6,7 +6,7 @@
     "model": "Mountaineer",
     "years": "2006",
     "engine": "4.6L SOHC 3-valve Triton V8 (MAF-metered, AWD)",
-    "author": "ford-obd project",
+    "author": "OBDash project",
     "version": "0.1.0",
     "protocol": "SAE J1850 PWM",
     "notes": "UN150 platform, badge-twin of the 4th-gen (2006-2010) Ford Explorer. Uses Ford SCP = SAE J1850 PWM (DLC pins 2 & 10, 41.6 kbps) for SAE J1979 diagnostics \u2014 ELM327 protocol 1. The MS-CAN on this platform is an internal body network (FORScan), not the generic emissions bus; ISO 15765 CAN only arrived for MY2008. MAF-metered, no MAP. Two banks, two narrowband HEGO O2 sensors per bank. No verifiable mode-22 enhanced PIDs for this pre-CAN J1850 PCM, so none included. Mode-01 0142 module voltage omitted (CAN-era PID); use BATT (ATRV)."

run_gui.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-"""Launcher for the ford-obd GUI.
+"""Launcher for the OBDash GUI.
 
     pip install PySide6 pyqtgraph numpy pyserial
     python run_gui.py