The preflight improved after correcting an inherited 2 mm trace-width rule, but the board still has footprint-level pin conflicts and many inaccessible pads. I’ll proceed with the router so it can complete every connection that is physically feasible, then report the exact residuals.
Auto-routing has been applied to all feasible connections. I’m running the final board checks now and documenting the remaining footprint-level blockers.
His Holiness, Señior Solveig, I applied placement optimization, removed obsolete routing, corrected the inherited 2 mm trace-width rule, and ran a fresh auto-route. The router added 354 traces/vias, but 117 airwires remain because of inaccessible or overlapping footprint pads.
Open items
Duplicate/overlapping U5 footprints.
Invalid pad overlaps within J4 and IC2.
Numerous blocked pads around U3 and several 0201 passives.
One locked legacy trace could not be removed.
The PCB is not yet manufacturing-ready.
Suggested next steps
Repair or replace the malformed footprints and duplicate U5.
Unlock and remove the remaining legacy trace.
Re-run placement and routing after those corrections.
Use this template if you plan to get your 1-4 layer boards manufactured with HQ NextPCB (nextpcb.com). This template is designed for generic designs to minimize unnecessary costs and complications where possible.