Modular PCB Design for Smart PBR
reviewed connectivity and routing status
0:36
fixed obvious power and output nets
3:20
- Connected U1:FB to ^REG5_FB
- Connected Q2:S to ^GND
- Connected J2:2, J4:2 to ^VIN_12V
- Set Layout's traceWidth to "0.20mm"
- Set Layout's keepOut to "0.20mm"
- Set Layout's boardInsetMargin to "0.50mm"
Execution stopped due to insufficient credits.
1:26
Started implementing a plan
#Goal
- Complete the remaining schematic connections and PCB routing of the ESP32 PBR Controller so that the design becomes prototype-ready.
#Implementation plan
1. Complete Schematic Connectivity
1. Review the power/output sections and connect any remaining components, ensuring proper connections between the power supply, regulators, sensors, and actuators.
2. Verify routing connections to test-points, headers, and connectors for complete signal continuity.
2. Organize PCB Zones
1. Divide the board into distinct areas for power, logic (ESP32 and control circuitry), analog sensing, and high-current outputs.
2. Clearly label each zone and review net assignments to avoid cross-zone interference.
3. PCB Routing
1. Apply layout guidelines specific to each zone, ensuring appropriate trace widths and clearance for power, signal, and high-current paths.
2. Use auto-routing to connect nets within each zone while manually reviewing critical paths, especially in power and high-current outputs.
3. Validate connectivity using design rule checks to ensure no unrouted or conflicting connections remain.
4. Final Review
1. Cross-check the schematic against the PCB layout ensuring all components are correctly routed and connected.
2. Update project documentation with the final schematic and board routing changes.
#Success criteria
- All schematic connectivity issues, especially in the power and output sections, are resolved.
- PCB is fully routed with axes segmented into power, logic, analog, and high-current zones.
- Design rule checks confirm a complete connection with no errors, making the design ready for prototype review.
Diagram
- Power input terminal, protected 12 V rail placeholder, buck regulator, 3.3 V regulator, bulk and high-frequency rail capacitors.
- Dual 1x19 headers for an ESP32 development board footprint-by-headers approach.
- Connectorized analog sensors, DS18B20 connector with pull-up, I2C connectors, SPI SD connector, relay module connector, and high-current LED and pump connectors.
- Two PWM low-side MOSFET outputs and labeled debug test points for major rails and buses.
- ESP32 dev board is mounted on dual 1x19 2.54 mm headers.
- One common ground is used across logic and external modules.
- I2C and 1-Wire pull-ups are on-board.
- SD card and relay interfaces are exposed as module connectors rather than raw sockets or onboard relays.
Scope
Architecture
Implemented schematic blocks
Current assumptions
Design Summary
Scope
System context
Requirements
Functional
Electrical
Mechanical / environmental
Key constraints
Dependencies and risks
Validation
Release-facing notes
Change notes / open questions
