Power Distribution Schematic Design
Worked for 1 min 39 sec
Added the optional battery-sense ADC filter capacitor: C12 is a 0.1µF ceramic capacitor from
BATTERY_SENSE_GPIO34 to GND, labeled as optional ADC noise filter / C_BATSENSE in its role details. I verified R3 remains 100kΩ, R4 remains 22kΩ, and BATTERY_SENSE_GPIO34 still connects to U1 GPIO34, R3/R4 midpoint, TP5, and C12.Open item:
- ERC still shows the pre-existing
U1:VPmissing-power symbol warning; unrelated to this change. - Your account has no available ACUs, so I can’t continue with additional AI-assisted edits right now.
Suggested next steps:
- Place C12 physically near U1 GPIO34 / R3-R4 during PCB layout.
- Continue PCB placement once ACUs are available.
- If desired later, update the cleanup/design-review project file to mention C12 explicitly.
Worked for 6 mins 15 sec
Initial PCB placement is complete, with no overlap or out-of-board placement issues: thermocouple connectors along the top edge, battery/fuse/regulator on the left, fan/servo connectors and drivers on the right, ESP32 centered, and MAX31855 devices grouped near the ESP32. Estimated time saved vs. manual EDA workflow: ~2–4 hours.
Open items:
- Airwires remain because routing was intentionally not performed.
- Placement concern: the design spans most of the 160 mm board width, so keep BAT_12V routing wide and thermocouple traces physically separated from fan/servo current paths during routing.
Suggested next steps:
- Set high-current trace-width rules for
BAT_12V,FAN_GND, and servo power. - Add/confirm GND plane setup on the 4-layer stackup.
- Route power first, then sensitive thermocouple/SPI signals.
- Run DRC after routing.
Worked for 2 mins 5 sec
Final hardware review is complete and saved as Final Hardware Design Review Before PCB Routing. Highest-priority items before routing are reverse-polarity protection, fuse/current sizing, LM2596 module-vs-IC confirmation, and high-current trace-width rules; no design changes were made.
Add protections and rules
Add reverse protection
Set trace rules
Verify LM2596
Explain fuse sizing
