PCB Routing Congestion
Worked for 1 min 33 sec
Blocked by permissions: this account has view-only access, so I could not move components or run the edit-gated auto-route board check.
What I verified:
- Current DRC: 513 errors, 0 warnings
- All reported DRC errors are Airwires: 513 remaining
- Routing feasibility from layout inspection: UNROUTABLE
- Main affected area: near (27.5 mm, 0 mm) around FCC1, UART3_FCC1, U11, LED4
- Key affected nets/signals called out by congestion analysis: FCC1 PB1–LED4 A, UART3_FCC1 3–FCC1 PD8, U11 RXD–FCC1 PB14, FCC1 PB15–U11 TXD, R53 P1–FCC1 PA11
Open items:
- Targeted FCC/UART cluster spreading was not applied due to view-only access.
- Auto-route feasibility check was not executed because that tool also requires edit access.
- The board still has 513 airwires and remains unrouteable as placed.
Suggested next steps:
- Grant edit access or open the owner/editable fork.
- Re-run the scoped placement fix for FCC1/UART3_FCC1/U11/LED4.
- Run auto-route board check, then full DRC.
- If feasibility improves, run the router and report final remaining airwire/DRC counts.
Run FULL DRC feasibility improves, run the router and report final remaining airwire/DRC counts
Thought for 7 sec
I’ll re-run the full read-only DRC now and report the current counts; routing/auto-route still requires edit access, so I can only run it if this project becomes editable.
Worked for 35 sec
Full DRC re-run completed at 2026-07-27 20:13:58Z.
Results:
- Total DRC errors: 513
- Total DRC warnings: 0
- Airwires remaining: 513
- Other DRC categories shown: 0 errors / 0 warnings
- Router was not run because the project is still view-only for this account; routing requires edit access.
The design is therefore not complete and remains unrouted.
Prepare editable fork
Summarize routing blockers
List critical airwires
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KiCad Import Status
Source files
Uploaded KiCad legacy schematic/layout files:
Hades.sch— top-level power/input regulation sheetFCC.sch— STM32H753 flight-control computer coreFCCPeripherals.sch— PWM, EEPROM/flash, UART/I2C/ADC/RC connectorsNAVC.sch— STM32F405 navigation computer coreNAVCPeripherals.sch— IMU, magnetometer, temperature sensor, GPS, NAVC connectorsConnections.sch— USB, SWD, interconnect, UART bridge, GPS backup connectorSensors.sch— parsed as effectively empty/malformed ($EndSCHEMATConly, no components)Hades.net— KiCad netlist used to reconstruct connectivityHades.kicad_pcb— PCB layout/reference; board outline and some footprint coordinates were extracted
What is now recreated in Flux
The schematic is now reconstructed at the component and logical-net level.
Current status after this update:
- Schematic components: 208 physical components plus generated net/no-connect helper objects used by Flux connectivity
- Nets reconstructed from
Hades.net: 171 - ERC electrical checks run for floating pins, power pins, pin-to-pin, and no-connects: clean for checked categories
- Added netlist-missing components:
C56,FB4,FB5,FB6,D4,D5,JP2
Major recreated blocks:
- Power input and regulation: XT60 input, INA219 monitor substitute, MIC26903 buck, LD39200 LDO, inductor, Schottky diode, bulk/decoupling/feedback passives, LEDs
- FCC core: STM32H753VIT6, 25 MHz crystal, decoupling, pullups, switches, status LEDs, test points
- FCC peripherals: PCA9685 PWM controller, PWM headers, PicoBlade connectors, EEPROM/flash substitutes, support passives
- NAVC core: STM32F405RGT6, 25 MHz crystal, decoupling, pullups, switches, status LEDs, test points
- NAVC peripherals: BMI088 IMU, TMP100 temperature sensor, IIS2MDCTR magnetometer, MAX-8Q GPS, pressure sensor, PicoBlade connectors, support passives
- Connections: USB Micro-B connectors, CH330N USB-UART bridges, SWD headers, solder jumpers, GPS backup connector, ferrite beads, Schottky protection parts
PCB layout recreation status
Board outline recreated from KiCad
Edge.Cuts:- Bounding box: approximately 100.078 × 60.198 mm
- Rounded-corner outline reconstructed from KiCad line/arc geometry
- 4-layer stackup applied with inner GND and power planes
Placement:
- Exact KiCad coordinates were recovered and applied for the board outline plus a subset of footprint placements, including the main MCUs, several ICs, key USB/connectors, test points, some passives, and selected protection parts.
- Remaining components were cleaned up with placement optimization inside the KiCad outline.
- Final placement is not an exact full KiCad placement clone because the uploaded PCB file extraction exposed only partial footprint coordinate data through the available parser.
Routing:
- Not routed yet. Airwires remain and are expected.
Exact missing parts and substitutions
Exact parts not found in the Flux library; missing-part requests were filed earlier:
Table
| KiCad part | Status / Flux substitute | Note |
|---|---|---|
W25N01GVZEIG_TR | W25N04KVZEIR used for U4 | SPI NAND density/command assumptions must be reviewed in firmware/layout |
24CW1280T-I/OT | 24LC64T-I/OT used for U3, U9 | EEPROM capacity differs significantly; verify firmware expectations |
TE Connectivity 5-1814832-1 | CONSMA001-G used for ANT1 | RF/mechanical footprint must be verified before manufacturing |
Other substitutions:
Table
| KiCad source | Flux component used | Note |
|---|---|---|
INA219AIDCNR | INA219AIDCNT | Same INA219A SOT-23-8/DCN family; tape/reel suffix differs |
Ferrite_Bead_Small | MPZ1005S121HT000 | 0402 ferrite bead substitute |
u-blox MAX-8Q / MAX module footprint | MAX-8Q | Library GPS module used |
Molex 53048-0710 | 530470710 | Related 7-position Molex connector substitute; exact 53048-0710 not found |
PWM_SIG1 1x08 vertical 2.54 mm header | 1x08 2.54 mm horizontal header | Exact vertical 1x08 was unavailable in search result |
CH330 | CH330N | Closest Flux USB-UART bridge library match |
Known limitations remaining
- PCB placement is only partially reference-exact because not all footprint coordinates could be extracted from the uploaded
.kicad_pcbvia the available file parser. - Airwires remain because routing has not been run.
- Several generic passives still use Flux generic footprints/properties rather than exact KiCad footprint geometry.
- Substituted parts must be reviewed before manufacturing, especially
U3,U4,U9,ANT1, and the PWM header. - Mounting holes were identified in KiCad at approximately
(29.718,29.718),(121.031,29.845),(29.845,81.153), and(121.031,81.153)mm, but they are not fully recreated as dedicated mounting-hole components yet.
Recommended next actions
- Review the schematic visually for readability; the logical ERC is clean, but the generated net portals are not hand-polished.
- Provide the original KiCad project archive if exact full placement/routing recreation is required.
- Verify or replace substitute parts before layout finalization.
- Add mounting holes/mechanical constraints.
- Route the PCB, then run DRC and manufacturing checks.
Source files
What is now recreated in Flux
PCB layout recreation status
Exact missing parts and substitutions
Known limitations remaining
Recommended next actions
