Floating Copper Detection Help

flux

I checked the current project state, and the current Floating Copper review is passing — it shows “Floating Copper” status: Success right now. The review system in Flux is the right place to confirm this kind of issue, and it reports the floating-copper check as up to date.
That said, your project history does show an earlier floating-copper problem associated with Trace auto, and the disconnected items tied to that earlier state were around:
What this usually means
A Floating Copper error means there is a PCB copper object with no real net connection:
  • a short stray trace segment
  • an orphan via
  • a tiny isolated fill island
Fastest way to fix it
In PCB view:
  1. Click the review item for Floating Copper / Trace auto.
  2. Zoom to the flagged object.
  3. If it is a stray route stub or tiny orphan trace, delete it.
  4. If it is supposed to belong to a net, reconnect it so it touches the correct pad/trace continuously.
  5. If it is an isolated fill island, either:
    • remove that fill piece, or
    • make sure the fill is actually tied into the intended net.
In your design, the most suspicious earlier areas were Earlier flagged areas

Table

ItemEarlier issue
L1output-side copper around 12V_OUT
F2isolated battery LED source copper
R4isolated LED anode copper
R5previously isolated pad/trace
J1 + H4earlier isolated copper/net fragment
Important note
Because the current review now passes, the problem may already be fixed, or the flagged copper object was removed/changed since the error appeared.
If you still see the review entry in the UI, refresh the review panel or click back into the PCB canvas and re-check it. Flux’s review system is the authoritative source for whether the floating copper still exists.
If you want, I can help you narrow it down further by checking one suspect area at a time, starting with L1 and the 12 V output section.
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R2
Resistance
22kΩ
R8
Resistance
100kΩ
C1
Capacitance
10uF
Q3
F1
U1
Q1
J1
D1
LED1,RED

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Mini UPS 42V to 12V thumbnail
Mini UPS PCB for a 42 V external adapter and external 10S lithium battery pack. Includes adapter-priority source selection with automatic switchover, input protection, ideal-diode OR-ing, a 30 V to 42 V HV bus, and a regulated 12 V output stage. Includes status LEDs and battery monitor pads. Excludes onboard charger circuitry and excludes adapter or battery source design.

Properties

Pricing & Availability

Distributor

Qty 1

Arrow

$39.97–$40.80

Digi-Key

$1.75–$2.47

LCSC

$17.95–$17.97

Mouser

$42.87

TME

$0.43

Verical

$0.97–$2.63

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