In that article, this remark struck me immediately as the KiCAD library convention has a different rule:
"... it’s our responsibility to design all of our footprints such that the footprint orientation matches that of the reel, relative to that of the reel feed direction. In a nutshell, we just need to make sure that pin 1 on our footprint design matches the same quadrant as pin 1 on the reel when it runs through the machine."
I checked the KiCAD library convention, and is says (rule 7.2):
"Pin-1 should be placed at the top-left. Where this is impractical, it should be placed closest to the top (IPC-7351)"
It might be, in practice, that pin 1 is in the first quadrant (read the hackable article to see what I mean) in the reel most of the time, but that is not guaranteed.
The article also says:
"Sometimes, an IC’s primary datasheet may not contain the reel orientation. For that info, they sometimes refer you to a different datasheet with reel information for a specific package type."
Should the library convention be adapted to include the reel orientation in rule 7.2? (I would hate that!)
Does anyone have any ideas on that?