Schematic Checklist

Style

• Wires come straight out of symbol pins, do not connect directly to symbol pins
• Use labels instead of long wires
• Depopulated parts should have an additional attribute ("Depop": "DO NOT POP") visible on the schematic

Readability

• All connectors have description and pinout labeled
• Divide the schematic into functional blocks and label them
• Add notes to explain non-obvious components or circuits
• Add notes for circuit calculations for future reference
• Add notes for important component values (tolerance, power rating, etc.)

Best Practices

• All ICs should have a ceramic decoupling cap
• MCU I/O signals should have pull-up/pull-down resistors to set a default state when the MCU boots up
• All important signals that aren't easy to access should have test points
• Add a ground probe connection for easy board measurements
• Add jumpers in order to be able to disconnect/connect circuits when troubleshooting
• Add high value pull-down resistors to ensure signals aren't floating