Redundant Traces Fix

The "Redundant Traces" review flagged a warning on Smart Via, Trace auto.

Reports traces and vias that no connection needs: copper that can be removed without disconnecting any pad, custom trace, fill, or polygon. This includes dangling stubs, floating trace islands, and loops.

Name: Smart Via, Trace auto; Net: BATTERY

Context: Reports traces and vias that no connection needs: copper that can be removed without disconnecting any pad, custom trace, fill, or polygon. This includes dangling stubs, floating trace islands, and loops.

Help me fix this.

Worked for 22 sec

flux

I can fix this by locating the Smart Via / Trace auto copper on BATTERY, removing only the redundant stub/loop and rerunning the DRC to confirm connectivity remains intact. The warning isn’t currently reproduced by the read-only review, so I need Agent mode to inspect and edit the live PCB geometry.

Files

Schematic

Layout

3D View

Placement Validation

Scope status

Table

Item	Status	Evidence / note
11.7 mm × 30.5 mm board	Completed	Layout readback remains exactly 11.7 mm × 30.5 mm.
Two-layer stackup	Completed	Standard two-layer stackup; no stackup or outline change was made.
Connector and switch anchors	Completed	J1, J2, and SW1 positions/orientations were preserved. J1/J2/SW1 remain Top; every other electrical component remains Bottom.
Reinforced tether hole	Completed	Existing 4.0 mm finished plated hole and 5.0 mm copper diameter were preserved.
`RoysRockets.com` branding	Completed	Moved from (0, 8) to (4.85, 11.0) mm, rotated 90°, retained 0.8 mm font height on Top silkscreen. It clears SW1, the tether pad, and the adjacent via.
Opposite-side body/copper collision cleanup	Completed	Repacked the Bottom-side buzzer and lower charger/driver clusters; final DRC has zero body-overlap, overlapping-copper, overlapping-trace, outside-board, invalid-layer, keepout, pad-access, or redundant-trace findings.
Signal routing repair	Completed	Previously open `ALARM_PWM`, `BUZZER_GATE`, `BUZZER_LOW`, and `VSYS` signal connections were completed by targeted repair plus one cleanup auto-route pass.
Zero-airwire target	Failed	Four `GND` airwires remain after the auto-route pass; no signal-net airwires remain.
J1 edge warning	Completed with advisory	One pre-existing J1 edge-placement warning remains. The connector placement was intentionally preserved because moving its asymmetric footprint origin previously created opposite-side collisions.

Exact placement changes

Final positions in millimetres:

Table

Item	Previous	Final	Purpose
`RoysRockets.com`	(0, 8), 0°	(4.85, 11.0), 90°	Clear SW1 while preserving readable 0.8 mm text.
BZ1	(0, 3.5)	(-0.15, 3.7)	Clear C2/Q2/R5 while retaining acoustic access.
F1	(3.0, -13.29)	(4.6, -13.29)	Separate lower protection/charger bodies.
C1	(2.3, -11.75)	(2.7, -11.75)	Resolve the C1/F1 cluster while staying close to U2.
R6	(3.35, -10.45)	(3.9, -10.5)	Clear C1/D2 and maintain the gate pull-down connection corridor.
D1	(4.75, -12.15)	(5.0, -10.7)	Clear F1/C1 at the lower edge.
D2	(3.0, -7.9)	(3.65, -7.9)	Open a narrow routing/placement corridor beside U1.
R5	(5.27, 0.3)	(2.4, -6.5)	Remove buzzer-region body conflicts and place the gate resistor near U1/Q2 without touching J1 shield copper.

Routing work

Deleted stale/redundant routing created by the placement changes on GND, USB_5V, USB_VBUS_RAW, BUZZER_GATE, BUZZER_LOW, and VSYS.
Surgically reconnected moved endpoints where the point-to-point router succeeded.
The point-to-point router repeatedly rejected ALARM_PWM and BUZZER_GATE despite targeted placement changes, so one cleanup auto-route pass was used. It added 32 routing nodes and completed the remaining signal connections, but regressed the ground network to four airwires.
Deleted all five redundant traces/vias left by that cleanup pass.

Final validation evidence

Final DRC review at 2026-09-13T22:50:16.630Z reports only:

GND: J1 GND::1 → U1 GND
GND: C2 P2 → U1 GND
GND: C3 P2 → GND fill
GND: C3 P2 → GND-fill stitching via
J1 edge-placement warning

No open body-overlap, overlapping-copper, overlapping-trace, pad-access, outside-board, invalid-layer, keepout, or redundant-trace findings were present. Top- and Bottom-side layout renders were inspected after the final mutation; scene-tree inspection also confirmed the intended side assignment and component-model population.

Remaining uncertainty

The four ground airwires require a later targeted ground cleanup or fill/stitching review. The cleanup auto-route explicitly blocked further targeted routing in the same run after its partial result.
J1's routing preflight continues to report intrinsic same-net stacked GND/VBUS pads and shell-pin keepout interactions within the library footprint.
The board remains extremely dense (the placement tool estimates approximately 91% usable Bottom-side area utilization), so future movement should be minimal and localized.
The provisional SMT-0927-S-HT-R acoustic-performance issue remains unchanged.

Scope status
Exact placement changes
Routing work
Final validation evidence
Remaining uncertainty