PCB Design and Implementation
Image
Thought for 4 sec
I see the router committed a new auto-layout pass, but the UI still shows 71 airwires. I’ll verify the current post-route DRC directly and determine whether the route failed, is stale, or needs cleanup/retry.
Worked for 1 min 41 sec
I’m blocked from continuing because the account has no available ACUs, so AI tool execution is unavailable now.
Accomplished this session:
- Verified the new auto-route commit
#7242e711did run. - Found the route introduced 3 overlapping-copper shorts.
- Deleted the 3 shorted trace segments.
- Rechecked and confirmed route feasibility was clean.
- Found 11 airwires and 8 dangling-trace groups after removing the shorts.
- Deleted the dangling trace fragments from the affected nets.
Remaining work:
- Re-run DRC to confirm dangling traces are cleared.
- Run one cleanup auto-route pass for the remaining airwires.
- Run full DRC + manufacturing checks.
- Export Gerber, BOM, pick-and-place, netlist, and STEP only if checks are clean.
Run ERC/DRC later
Manual routing help
Final export checklist
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ESP32 RFID Access Control System v3.0
Objective
Design a professional, production-ready, industrial-grade 2-layer PCB for an ESP32 RFID access control system suitable for JLCPCB, PCBWay, and similar PCB manufacturers.
PCB Requirements
- 2-layer FR4, 1.6 mm, 1 oz copper
- Board size: 120 mm × 100 mm
- Corner radius: 5 mm
- 4× M3 mounting holes, 3 mm from PCB edges
- Green solder mask, white silkscreen
- Ground planes on both layers
- No copper below ESP32 antenna
- Signal traces: ≥0.3 mm
- Power traces: ≥2 mm
- Vias: 0.8 mm diameter / 0.4 mm drill
Functional Blocks
- ESP32 DevKit V1 38-pin controller, left side placement
- 12 V barrel jack input with 1 A fuse, reverse-polarity 1N4007 diode, SPST switch
- LM2596 buck converter for 5 V rail; 3.3 V logic rail from ESP32/module regulator unless a separate regulator is added
- MFRC522 RFID module via 8-pin header, 3.3 V only, SPI: SDA GPIO15, RST GPIO5, SCK GPIO18, MOSI GPIO23, MISO GPIO19
- 16×2 LCD with PCF8574 I2C backpack via 4-pin JST, 3.3 V, SDA GPIO21, SCL GPIO4, 4.7 kΩ pullups
- 5 V relay with GPIO26 transistor driver, flyback diode, status LED, screw terminal output
- 5 V active buzzer driven by GPIO27 through 2N2222 and 1 kΩ base resistor
- Four push buttons: UP GPIO33, DOWN GPIO32, SELECT GPIO25, BACK GPIO14; each has 10 kΩ pullup and 100 nF debounce capacitor
- LEDs: green power LED and red relay LED with 330 Ω resistors
- Connectors/test points: DC barrel jack, relay screw terminal, RFID JST/header, LCD JST, programming header, UART header, TP_5V, TP_3V3, TP_GND, TP_TX, TP_RX
Placement Intent
- Top left: ESP32
- Bottom left: LM2596 and power input
- Bottom center: buttons
- Center: RFID
- Top center: LCD connector
- Top right: buzzer
- Right: relay
- Bottom right: relay output
Validation Targets
- ERC clean
- DRC clean
- No unrouted nets
- Manufacturing notes, BOM, pick-and-place, Gerbers/drill, STEP/model exports after layout validation
Objective
PCB Requirements
Functional Blocks
Placement Intent
Validation Targets
