Sensor Wiring Setup
Thought for 3 sec
Work done
- Integrated the two native PC817 homing sensor channels with labeled X/Y sensor terminals, 10kΩ pullups, 100nF filters, 4.7kΩ status LED resistors, Nano D9/D10 outputs, and a single 0Ω star link between
GND_24VandGND_LOGIC. - Preserved the 100 mm × 152 mm, 2-layer board and placed the new/updated sensor parts in the connector area with no placement overlap or out-of-bounds issues.
- Applied the required 1.6 mm copper spacing rule conservatively and documented the implementation in Homing Sensor Integration Audit.
- ✅ Native X/Y sensor circuitry integrated and connected to
+24V_SENSOR/GND_24V. - ✅
LIMIT_X_NETconnects to Nano D9;LIMIT_Y_NETconnects to Nano D10. - ✅ Sensor terminals are documented as BRN/BLU/BLK and filters/status LEDs are included.
- ✅ Board size and 2-layer stackup are preserved.
- ❌ Final layout DRC is not clean: airwires and overlapping copper remain after the stricter spacing rule, so the board is not fabrication-ready yet.
Run routing cleanup/autoroute for the updated board, then re-check DRC until the airwire and copper-clearance issues are cleared. I can continue with PCB routing/cleanup guidance next.
Route sensor nets
Review DRC violations
Verify clearance rule
Prepare Gerbers
Update audit doc
Refine this doc
Ask about this doc
Jerky Robot V3 Control Board Implementation Plan
Goal
Implement the Jerky Robot V3 control board from
FLUX_COPILOT_PCB_SPEC.md as a 100 mm × 152 mm, 2-layer FR4 PCB for JLCPCB/PCBA.Required Architecture
- ESP32-S3-DevKitC-1 N16R8 socket/module interface.
- Arduino Nano socket/module interface.
- Screw-terminal I/O on board edges for 24 V input, 5 V input, X/Y stepper driver signals, X/Y sensors, HX711 cable, relay output, button box, AC contactor coil, spare expansion, SD card, and OLED.
- BSS138 level shifting for ESP32 ↔ Nano UART plus two spare BSS138 channels.
- PC817 optocoupler isolation for X/Y NPN photoelectric sensors.
- Optional HX711 load-cell ADC footprint/interface.
- 7 status LEDs and 6 labeled test points.
- 4× M3 plated mounting holes 5 mm from corners.
Critical Electrical Rules
- Shared GND across 5 V and 24 V domains; bottom layer is solid GND fill.
- Driver opto-input commons PUL+, DIR+, ENA+ connect to +5 V, not +24 V.
- ESP32 and Nano pin assignments must match firmware
config.hexactly. - Nano D12 / Z limit is intentionally unconnected.
PCB Constraints
- Board: 100 mm × 152 mm rectangular.
- Stackup: Standard 2 Layer / FR4 1.6 mm target.
- Components: top layer only.
- Bottom layer: continuous GND fill.
- Min trace/clearance: 0.2 mm.
- +24 V traces: ≥1.5 mm.
- +5 V traces: ≥1.0 mm.
- +3V3 traces: ≥0.5 mm.
- UART level-shifter traces: <30 mm target.
- HX711 analog area: keep away from relay; analog traces <50 mm if populated.
Execution Steps
- Create schematic components and document part selections.
- Wire all power, MCU, connector, level-shifter, optocoupler, HX711, LED, and test-point nets.
- Validate schematic and resolve ERC issues where possible.
- Configure PCB size, 2-layer stackup, and layout rules.
- Place components by functional floor plan with connectors at edges.
- Review DRC/ERC readiness and document any manual actions still required.
Goal
Required Architecture
Critical Electrical Rules
PCB Constraints
Execution Steps
