popn_pico/PCB/agg-kicad/lib/README.md

Schematic Symbols

Directory	Contents
connector	Connectors
ic	ICs including microcontrollers, amplifiers, sensors,etc
misc	Other parts including generic/drawing symbols
module	PCB subassemblies and modules
power	Power symbols
passive	Passive and other two-terminal devices including crystals, etc
ui	User interface elements including buzzers, switches, etc

The file agg-kicad.lib contains all of the symbols in this library.

General Guidelines

Enforced automatically

• One symbol per library
  • Exception for automatically generated libraries such as conn.lib
• Library filename the same as the part name
• All pins on 100mil grid
• 100mil pin length for ICs and similar symbols
• No missing numbers in pin numbering sequence
• Text size 50mil (fields, pin names, pin numbers)
  • Exception for pin numbers that are words, e.g. "PAD"
• Part reference above the part
• Part name (value field) below the part
• Fields must be horizontal
• Name and reference fields must be visible unless explicitly overridden
• Other fields (footprint, datasheet, order codes) must be invisible
• ICs and similar symbols to be filled with background colour

Must be checked manually

• Part name follows the manufacturer or common generic name
• Part designator follows IEEE 315 where possible
• Origin on/close to centre of part
• Name and reference left-aligned with left edge on non-symmetrical symbols
• Name and reference centre-aligned on symmetrical symbols

Helpful but not mandatory

• Include Farnell order code where applicable
• Include DigiKey and RS order codes where applicable and useful
• Pre-fill with a footprint field if one is very commonly used

Associated documentation to include in README

• Link to datasheet/web page
• Common supplier order codes
• Names of available footprints
• Has the symbol been validated in practice? Where?
• Any other notes / gotchas