Drone Autonomy Spec

Worked for 7 sec

Escalated internally to the Flux engineering team with:

Compute Vision Board link
HTTP 524 preflight failures
Partial auto-route corruption
Airwire increase from 247 to 442
Ground-fill/stitching-via corruption when applying routing rules
Clean recovery commit c52f37c6
Current safe board state

For a human support case and status follow-up, use Contact Support and reference the KRYSTAL Compute Vision Board routing/rules corruption issue.

olivier1970

write a reportwith all info for a new engineer to take over the PCB and fix it.

Thought for 9 sec

flux

I’ll create a structured takeover report covering both boards, architecture, completed work, current live state, known blockers, recovery history, verification gates, and the exact order a new engineer should follow.

Worked for 2 mins 22 sec

flux

Created the comprehensive PCB Engineering Takeover Report.

It covers:

Both project links and board responsibilities
Current CM5 and S32K344 architecture
Power, camera, radar, autopilot, Wi‑Fi, FHSS and SIYI interfaces
Board dimensions, stackups and enclosure direction
Completed fixes and verified checks
Routing-service failure and recovery history
Known footprints, software and regulatory risks
Recommended takeover sequence
Fabrication-release gates
Immediate first-day checklist and required engineer deliverables

The report clearly marks both boards HOLD for fabrication until routing, interface freeze, DRC, thermal, software and mechanical validation are complete.

Review takeover report

Audit live board states

Prepare migration package

Freeze external interfaces

Files

Schematic

Layout

Preview

U11

Preliminary Safety FMEA — KRYSTAL

Scope

Design-stage FMEA for the two-board drone companion, vision, communications and payload-management system.

Table

Subsystem	Failure mode	Effect	Severity (1–10)	Detection (1–10, higher is harder)	Mitigation / release action
Aircraft input	Surge/reverse/short	Board damage, smoke, loss of companion functions	9	3	Fuse, TVS, reverse protection, eFuse; validate at 9–36 V and transient profile
Compute supply	Undervoltage/reset loop	Loss of perception/network/swarm functions	8	4	Separate safety MCU, PGOOD/IMON, brownout policy, hold-up assessment
Linux compute	Crash/deadlock	Stale guidance or communications loss	10	3	Heartbeat, S32K watchdog/sanity gate, autopilot fallback
Safety MCU	Firmware or clock failure	Loss of supervision	10	5	External watchdog, safe GPIO defaults, independent reset/power monitoring
Camera link	Frozen/delayed frames	Incorrect terminal/GPS-denied guidance	10	5	Hardware timestamps, freshness checks, confidence gating, dual-sensor cross-check
Radar link	Stale/corrupt data	Incorrect obstacle/range estimate	9	5	Timestamp/CRC/plausibility checks and defined fallback
FHSS swarm link	Loss/interference/spoofing	Loss of coordination or unsafe tasking	9	5	Authentication, encryption, replay prevention, autonomous separation/failsafe
Wi-Fi/SIYI	Congestion/jamming	Video/data loss	6	3	Separate control/safety links; bandwidth prioritization and buffering
Autopilot interface	Pinout/power mismatch	Damage or loss of flight-control interface	10	4	Freeze exact autopilot model, protected connector power, preflight continuity test
Radar power connector	Disconnect/water ingress	Radar loss or short	8	4	Sealed locking connector, strain relief, fault detection
Enclosure	Condensation/water ingress	Corrosion, intermittent faults, shorts	9	6	Gasket, pressure vent, conformal coat, humidity testing, drainage/no water traps
Thermal system	Insufficient heat transfer	Throttling, shutdown, component ageing	9	5	Aluminum spreader/fins, TIM, thermal simulation and chamber test
TPS26630 footprint	Overlapping/incorrect thermal pads	Solder short/open or unreliable protection path	10	4	Verify/correct library footprint before release; AOI/X-ray criteria
AI overload	NPU/CPU saturation	Dropped frames, delayed decisions	9	4	Worst-case concurrent workload benchmark; do not assume Hailo-class capability

Highest-Priority Actions

Complete routing and all manufacturing DRC gates.
Resolve TPS26630 footprint geometry.
Freeze radar, cameras, autopilot and FHSS module/antenna SKUs.
Validate concurrent vision/radar/network workload on i.MX8M Plus.
Validate sealed-enclosure thermals, humidity, ingress and vibration.

Scope
Highest-Priority Actions