LED Blinker Circuit Design

flux

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Work done
  • Repacked the PCB placement while preserving the existing architecture, keeping connectors on edges, and keeping U4 at the top edge with antenna overhang.
  • Tightened placement again to pull U4 farther inside the board and add local clearance around U6.
  • Verified the layout envelope and documented the cleanup state in Design Notes.
Success criteria review
  • ❌ No remaining PCB airwires: review still reports 59 airwires.
  • ❌ Overlapping copper eliminated: review still reports 4 overlapping-copper errors tied to U6.
  • ❌ Board dimensions strictly comply with 60 mm x 45 mm: component bounds improved to 57.75 mm x 49 mm, so height is still over the 45 mm limit.
  • ✅ Overall system architecture was preserved during placement cleanup.
  • ❌ DRC/ERC fully clean: the layout review still shows airwire and copper-overlap errors, and ERC still shows floating pin U1 LX.
Next steps I could not finish the remaining plan because this session is blocked from further project edits. The next concrete actions are:
  • compress the vertical placement another 4 mm while preserving U4 antenna clearance,
  • localize and clear the copper short at U6,
  • then route the remaining airwires and re-run validation.
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Design Notes
Cluck Guard layout cleanup - airwire and overlap reduction
Current observed state
  • Board target remains fixed at 60 mm x 45 mm
  • A refreshed placement pass has now pulled the ESP32-C3 module downward while keeping antenna overhang at the top edge
  • Placement engine reports all components placed, in-bounds, and overlap-free after the latest pass
  • Review still needs to confirm whether copper-overlap and airwire counts dropped
  • Remaining known ERC warning before the latest review was U1 LX floating
Placement constraints used
  • Preserve current architecture and connector functions
  • Keep all connectors at board edges
  • Keep ESP32-C3 module antenna overhanging the top edge for RF clearance
  • Keep power block grouped: U1, U3, U6, L1, D1, D3 and associated passives
  • Keep PIR connector away from switching power area
  • Keep board strictly within 60 mm x 45 mm
Observed hotspot
  • Earlier overlapping copper reports mapped to the U6 footprint
  • Latest placement pass added local clearance around U6 and nearby support parts
Planned cleanup sequence
  1. Re-run review after placement change
  2. If overlapping copper persists, target localized geometry or rule cleanup near U6
  3. Validate board bounds and remaining airwires
  4. Close remaining ERC warning if still present

    Cluck Guard layout cleanup - airwire and overlap reduction

    Current observed state

    Placement constraints used

    Observed hotspot

    Planned cleanup sequence

Documents

    Design Notes

Assets

No assets added.

Cluck Guard

Cluck Guard thumbnail
Solar-powered ESP32-C3 predator deterrent with PIR trigger, 5 V LED boost driver, audio amplifier, battery charging, and 60 mm x 45 mm 2-layer hand-solderable layout.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$3.20–$3.76

Digi-Key

$6.08–$8.80

LCSC

$16.79–$17.22

Mouser

$7.47–$7.67

TME

$4.80–$4.92

Verical

$2.81–$83.58

Controls