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C3
Capacitance
0.1uF
P4
3V3
J1
Vbat
R8
Resistance
10KΩ
P5
R5
Resistance
10KΩ
3V3
P3
P1
BAT -
P7
R1
Resistance
10KΩ
R3
Resistance
10KΩ
P8
C4
Capacitance
0.1uF
R12
Resistance
100 Ω
3V3
Vbat
P6
R15
Resistance
150 Ω
R2
Resistance
10KΩ
R13
Resistance
100 Ω
BAT +
C2
Capacitance
0.1uF
R4
Resistance
10KΩ
R14
Resistance
150 Ω
R6
Resistance
10KΩ
Vbat
R11
Resistance
200 Ω
P2
R7
Resistance
10KΩ
Vbat
R10
Resistance
200 Ω
Vbat
C1
Capacitance
0.1uF
R9
Resistance
10KΩ
Vbat
U2
Net 15
D3
R-LED
D4
C8
Capacitance
0.1uF
D1
HL2
Q3
Not Recommended for New Designs
HL1
D2
Q4
Not Recommended for New Designs
TL1
G-LED
C5
Capacitance
0.1uF
TL2
Net 17
Q2
Not Recommended for New Designs
Net 20
Net 21
Q1
Not Recommended for New Designs
U1
C7
End of Life
Capacitance
0.01uF
C6
End of Life
Capacitance
0.01uF

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LionCircuits Clearance Fix Summary
Date: 2026-07-23
Requirement
LionCircuits requires at least 0.15 mm / 6 mil copper clearance for pad-to-trace and pad-to-pad spacing. The requested constraints were:
  • Check every copper layer for pad-to-trace and pad-to-pad gaps under 0.15 mm.
  • Preserve the schematic/netlist.
  • Do not shrink trace widths, especially motor/power traces.
  • Add a design rule enforcing the 0.15 mm minimum.
Before-edit findings
Flux DRC did not expose a separate numeric clearance report, but it did report 7 overlapping-copper pad-to-trace errors in the same class as the LionCircuits clearance failure. No pad-to-pad clearance errors were exposed by the current Flux checks.

Table

#Component / padToo close to trace/netBefore statusAction takenAfter status
1C3 P1Trace cd712066... on Net 15Under 0.15 mm / overlapping copperRemoved dangling/stub trace segmentCleared; no overlapping-copper error
2C3 P1Trace d02b852d... on Net 15Under 0.15 mm / overlapping copperRemoved dangling/stub trace segmentCleared; no overlapping-copper error
3C1 P1Trace 48eeabd7... on Net 21Under 0.15 mm / overlapping copperRemoved dangling/stub trace segmentCleared; no overlapping-copper error
4C4 P1Trace 7f6388a9... on Net 20Under 0.15 mm / overlapping copperRemoved dangling/stub trace segmentCleared; no overlapping-copper error
5C4 P1Trace 8031d960... on Net 20Under 0.15 mm / overlapping copperRemoved dangling/stub trace segmentCleared; no overlapping-copper error
6C2 P1Trace d6cf88d0... on Net 17Under 0.15 mm / overlapping copperRemoved dangling/stub trace segmentCleared; no overlapping-copper error
7C1 P1Trace e08dab08... on Net 21Under 0.15 mm / overlapping copperRemoved dangling/stub trace segmentCleared; no overlapping-copper error
Two dangling remnants left by the clearance cleanup were also removed:
  • Trace 23a0420b... / 5369d7e1... on Net 17
  • Trace b22bea57... on Net 15
These were layout-only cleanup edits; the schematic netlist was not changed.
Rule changes
Updated project PCB rulesets:
  1. LionCircuits 0.15mm pad clearance (selector: pad)
    • keepOut: routeSegment(0.15mm) pad(0.15mm) !important
    • minKeepOut: routeSegment(0.15mm) pad(0.15mm) !important
  2. LionCircuits 0.15mm trace-to-pad clearance (selector: routeSegment)
    • keepOut: pad(0.15mm) !important
    • minKeepOut: pad(0.15mm) !important
Verification after edits
Final DRC check results:
  • Overlapping Copper: no errors returned.
  • Pad Access Clearance: no errors returned.
  • Floating Copper: no errors returned.
  • Airwires: no errors returned in the requested verification set.
  • Dangling Traces: 5 warnings remain, all pre-existing and not part of the LionCircuits pad-to-trace / pad-to-pad clearance failure:
    • Trace 16d9
    • Trace 6106
    • Trace 740d
    • Trace 7932
    • Trace d682
Logical netlist verification after edits shows the affected nets still exist with the same schematic endpoints:
  • Net 15: D3, P6, Q3
  • Net 17: D2, P4, Q2
  • Net 20: D4, P8, Q4
  • Net 21: D1, P2, Q1
  • Net 23: Vbat / battery / C1-C4 / D1-D4 / J1 / terminals / R8
Notes
The exact old numeric gap values for each Flux-reported item were not available from the current DRC output; Flux reported them as overlapping-copper errors. The post-fix pass verifies that the pad-to-trace/pad-to-pad overlap class is cleared and that the new 0.15 mm clearance rules are present for future checks.

  • Requirement

  • Before-edit findings

  • Rule changes

  • Verification after edits

  • Notes

Documents

Assets

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Inertial Measurement Unit (IMU) with MPU6050 IC and four-channel motor driver with N-MOSFETs for micro ESP32 drone.
XIAO Series - Modular Custom Add-on Board.

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