Electrical Verification

do not place just route

Thought for 5 sec

Routing requires Agent mode to inspect the updated PCB, check routing feasibility, route all nets, and verify remaining airwires/DRC.

Thought for 4 sec

flux

Understood: routing only—no component placement or movement. Switch to Agent mode to route the existing placement and verify all airwires and routing DRC.

Continue in Agent Mode

Thought for 9 sec

flux

I’ll preserve the current placement, run a routing feasibility check, route the board, then verify remaining airwires and routing DRC.

Worked for 17 mins 10 sec

flux

Auto-routing converged with the existing placement: all nets are routed. I’m running the final airwire and DRC verification now; no components were moved.

Worked for 46 sec

flux

Board routing completed without moving components.

0 airwires
0 dangling traces
No routing-related DRC errors or warnings
Auto-router noted one skipped decoupling-routing preference on GND, but the net is fully routed and DRC-clean.

Review route quality

Clean up decoupling

Manufacturing readiness

Export fabrication files

Files

Schematic

Layout

Preview

Schematic Verification Report

Completion Status

Completed: full electrical schematic, all specified connectors, passives, active devices, test points, M3 NPTH holes, functional groups, and unused ESP32 no-connect markings.
Completed: electrical rule review with no open ERC errors or warnings.
Completed: explicit isolation inspection for L12V and R12V.
Completed: DC simulation of the mirrored throttle channels.
Not attempted: PCB layout, placement, routing, or board outline.

Sourced Parts

Table

Function	Selected part	Evidence / sourcing note
Controller module	Custom published `DOIT ESP32 DEVKIT V1 30-PIN`, part UID `4cfa3351-8811-41ed-8053-a7a91193dcec`	Created from public 30-pin pinout and nominal geometry; independently verified in its part project.
Dual op amp	Microchip MCP6002-I/P, PDIP-8	Flux library exact match; Microchip datasheet confirms pins 1-8 and 1.8-6.0 V operation.
Isolated contacts	Panasonic AQY212EH, DIP-4, LCSC C2894775	Flux/LCSC library; Panasonic GE DIP4 datasheet confirms 1-Form-A, LED pins 1-2 and contact pins 3-4.
Zeners	onsemi 1N5231BTR, DO-35	5.1 V nominal, 500 mW; cathodes connected to LAMP/RAMP.
J1	KEFA KF128-5.08-2P-AA, LCSC C474952	2-position 5.08 mm through-hole screw terminal.
J2	Phoenix Contact 1729160	6-position 5.08 mm through-hole screw terminal; distributor metadata includes LCSC availability.
J4/J5	Phoenix Contact 1702558	5-position 5.08 mm through-hole screw terminal, 20 A/400 V family.
Test points	Keystone 4952, LCSC C238118	Through-hole probe loop.
Mounting	3.2 mm NPTH / 7.4 mm no-copper mounting-hole part	Four instances H1-H4.
C1	HRK CD110 10 uF / 50 V radial electrolytic, LCSC C2960373	Higher than requested preferred 25 V rating.

Connectivity Evidence

61 schematic components and 33 named nets.
J1/J2/J4/J5 pin memberships match the requested order.
MCP6002 pin mapping verified: VOUTA=1, VINA-=2, VINA+=3, VSS=4, VINB+=5, VINB-=6, VOUTB=7, VDD=8.
Both ESP32 GND pins connect to logic GND; VIN connects only to +5V; 3V3 connects to J2 and R5.
All 19 test points are connected to their named requested nets.

Isolation Boundary Evidence

L12V has exactly J4 pin 3, U2 pin 4, U3 pin 4, TP14.
R12V has exactly J5 pin 3, U4 pin 4, U5 pin 4, TP17.
Neither L12V nor R12V contains a GND, +5V, or +3V3 pin.
L12V and R12V are distinct nets and do not share any component pin.
Contact outputs are limited to their own PhotoMOS contact, connector pin, and test point.

ERC / Review

Electrical review returned no checks in ERROR, WARNING, OPEN, or UNCERTAIN state.
All unused ESP32 pins and mechanical mounting-hole schematic terminals are intentionally marked no-connect.
Manufacturing review still flags 25 generic passives for missing manufacturer MPNs; this is a BOM finalization item, not an electrical/ERC defect.

Analog Simulation

Simulated both MCP6002 channels from 0-3.3 V input on a 5 V supply.
LAMP/RAMP linear gain: 1.30000 V/V.
Connector-side LTHR/RTHR gain: 1.28712 V/V due to the 1 kOhm / 100 kOhm divider.
At 3.3 V input: LAMP/RAMP approximately 4.290 V and LTHR/RTHR approximately 4.248 V.
No clipping occurs over 0-3.3 V; high-rail compression begins around 3.81 V input.

Footprint Risk

Public sources agree on 30 pins and 2.54 mm pitch, but clone body dimensions vary. The created footprint uses 25.4 mm row spacing, 1.0 mm drill, and 1.8 mm pads.
Before PCB fabrication, physically measure the delivered module's row spacing, body width/length, USB protrusion, button envelope, and antenna end. This is the only material unresolved fit risk.

Exact Blockers

No electrical blocker remains.
Final procurement-grade BOM is blocked only by selection of exact manufacturer MPNs for generic R1-R23 and C2-C3.
PCB layout must not begin until the user's actual DevKit dimensions are checked against the nominal footprint.

Completion Status
Sourced Parts
Connectivity Evidence
Isolation Boundary Evidence
ERC / Review
Analog Simulation
Footprint Risk
Exact Blockers