• Project description updated to reflect wiring and cleanup goals.
• Renamed power rails: Net 10→5V, Net 28→VIN_12V, Net 1→3V3; added corresponding power net portals.
• Connected U4’s 3V3 pins and all ground pins to 3V3 and GND respectively.
• Added three 100 kΩ pulldown resistors for Q1–Q3 bases (nets Net 12, Net 16, Net 18 → GND).
• Renamed relay contact nets: REL1_COM, REL1_NO, REL2_COM, REL2_NO, REL3_COM, REL3_NO.
• Renamed coil low-side nets: REL1_COIL_LO, REL2_COIL_LO, REL3_COIL_LO.
• Removed redundant net portals (D1/D2/D3, NOx, COMx, RELx), floating resistors R2 and R3, and unused DC jack J10.
Success Criteria Met:
✅ U4 has correct 3.3 V supply and common ground.
✅ Base pulldowns in place.
✅ Nets are descriptively named.
✅ Orphan parts removed.
Next step: Review the schematic for completeness and functional correctness before proceeding to PCB layout.
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
General Purpose Thick Film Standard Power
and High-Power Chip Resistor
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film
Features:
- RMCF – standard power ratings
- RMCP – high power ratings
- Nickel barrier terminations standard
- Power derating from 100% at 70ºC to zero at +155ºC
- RoHS compliant, REACH compliant, and halogen free
- AEC-Q200 compliant