Design Review Feedback
Thought for 2 mins 14 sec
Here’s a high-level summary of what I see:
- No DRC or air-wire violations are reported
- All required pull-ups (BOOT0, I²C SDA/SCL) and pull-downs (BOOT0) are present
- LC decoupling on VDDA (L1 + C5/C6) and dual caps on the crystal (C7/C8) are correct
However, the following ERC/manufacturing-readiness issues remain:
-
Undefined component values & footprints
- All decoupling caps (e.g. Generic Capacitor) lack specified capacitance (e.g. 100 nF) and voltage rating
- All pull-up/pull-down resistors (e.g. Generic Resistor) need defined values (e.g. 10 kΩ) and package (0402/0603)
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Parts availability
- “Generic” symbols have no real MPN—each capacitor, resistor, and the crystal (X1) require a concrete part from the library or vendor
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Decoupling completeness check
- Verify you have a 100 nF cap close to every VDD pin of U1 (STM32F405), U2 (LM75B), and U3 (MPU-9250)
- Ensure bulk capacitance (e.g. 4.7 µF–10 µF) on the main 3.3 V rail, if not already placed
Next steps:
- Assign values, voltage ratings, footprints, and MPNs to every “Generic” part
- Add any missing bulk caps on the 3.3 V rail if your power budget calls for it
- Swap “Generic” symbols for real library parts once values are defined
Pull-up resistor values
Pick decoupling caps
Add bulk cap
Select crystal MPN
List resistor MPNs
![[Example] STM32F4x Preliminary Design thumbnail](https://img-cdn.flux.ai/eyJidWNrZXQiOiJncmF2aXRvbi1lbGVjdHJpYy1zeW1ib2xzIiwia2V5IjoiZG9jdW1lbnRfYXNzZXRzL3N0bTMyZjQtNjg5MjllYTEtNmZmZC1kMzhjLWQ5NDAtODY2ZDA3MTU1MjIyLnBuZyIsImVkaXRzIjp7InJlc2l6ZSI6eyJ3aWR0aCI6MTM2LCJoZWlnaHQiOjEzNiwiZml0IjoiY29udGFpbiIsImJhY2tncm91bmQiOnsiciI6MCwiZyI6MCwiYiI6MCwiYWxwaGEiOjB9fX0sIm91dHB1dEZvcm1hdCI6IndlYnAifQ==)