Project Completion Steps

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The project is not ready for layout/routing yet: it has 92 components placed, but 0 schematic nets, so everything is electrically unwired. The review currently shows hundreds of floating-pin warnings because no pins are connected.
To complete it, do this in order:
  1. Finish the schematic first
    • Wire all power rails: AC input, isolated/non-isolated 5 V, 3.3 V, metrology analog supplies, MCU/ESP32/LAN/RS485 rails.
    • Wire the main ICs from datasheets: STM32G431, ESP32-WROVER-E, ATM90E36A, LAN8720A, AP63203, MIC5504, SN65HVD485.
    • Add/verify all required decoupling, boot straps, pull-ups, crystals, reset circuits, Ethernet magnetics, RS485 termination/protection, and metrology input networks.
    • Mark truly unused pins as no-connect.
  2. Run ERC and fix until clean
    • The current floating-pin warnings are expected because there are no nets.
    • Do not proceed to PCB routing until ERC is clean or every warning is justified.
  3. Validate safety-critical sections
    • Check mains input, fuse/MOV/NTC/X2/Y-cap placement, creepage/clearance, isolation boundary, and HV/LV separation.
    • Verify the Class 0.5 metrology front-end resistor/capacitor values against the ATM90E36A reference design.
  4. Then continue PCB layout
    • Board already exists as 160 mm × 100 mm, 4-layer, and components are placed.
    • After schematic wiring creates nets, place/adjust components by functional block, then route.
  5. Final review/export
    • Run DRC/ERC.
    • Fix airwires, clearance, copper, footprint, and manufacturing issues.
    • Export Gerbers, BOM, pick-and-place, and assembly files.
Important: your current access is view-only, so I can inspect and advise, but I can’t directly modify this project unless you get edit access or fork/copy it into a project you can edit.
Fork for editing
List power nets
Group review issues
Check metrology datasheet
Completion checklist
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3_Phase_Energy_Meter

3_Phase_Energy_Meter thumbnail
Industrial Class 0.5 three-phase energy meter with STM32G431 metrology/control, ESP32-WROVER-E Ethernet/WiFi communications, ATM90E36A metering front end, RS485, industrial HV/LV isolation, and 4-layer pre-layout constraints.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$12.35–$18.75

Digi-Key

$18.66–$18.88

LCSC

$28.46–$28.59

Mouser

$35.73

TME

$17.24

Verical

$17.78–$36.86

Controls