DRC review required: multiple nets in schematic have no PCB connections yet (BOUT1 partial, BOUT2, E_STOP_OUT, nFAULT, some ADC variants). Expect airwires on these nets until routed or intentionally NC’d. No specific shorted-net airwire conflicts identified from schematic alone; run board-level DRC and inspect unrouted airwires around TRACK_DRIVER header, J7 track output, E-STOP loop, and ESP32 ADC pins.

BOUT1, BOUT2, E_STOP_OUT, nFAULT, ADC

DRC review required: Floating copper region on Top layer near J1 pads; Floating copper region on Bottom layer near J1 pads; Isolated copper island near J7 track output terminal; Floating copper polygon near net nFAULT on Top layer; Isolated copper patch near BOUT1 trace. Inspect and either tie to GND with vias or remove, then repour all zones.

Mixed (Power + Digital Control + Ground Star)

Power Conversion

Buttons

Arduino

Battery

Power Management

Base station control board using ESP32-WROOM-32 to drive one DRV8825 stepper channel from 12 V and two DRV8833 linear/actuator channels from a 6 V buck rail, with E-Stop and star-grounding.

Industrial/Manufacturing

10

WiFi

BD

-20 to 60 °C

flowchart TD subgraph Sockets DIP_A["DIP-16 Socket A"] DIP_B["DIP-16 Socket B"] end subgraph ClearanceZones USB["USB Keep-Clear (15mm)"] HS["Heatsink Keep-Clear (10mm)"] end subgraph GroundPlane GND["Reinforced GND Plane"] end USB --> Sockets HS --> Sockets Sockets --> GND

Floating copper region on Top layer near J1 pads; Floating copper region on Bottom layer near J1 pads; Isolated copper island near J7 track output terminal; Floating copper polygon near net nFAULT on Top layer; Isolated copper patch near BOUT1 trace