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X-Recipient: | geda-help AT delorie DOT com |
Date: | Sat, 17 Dec 2016 04:06:07 +0100 (CET) |
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To: | geda-help AT delorie DOT com |
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From: | gedah AT igor2 DOT repo DOT hu |
Subject: | Re: [geda-help] Orientation of components in X-Y (centroid) files |
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On Fri, 16 Dec 2016, DJ Delorie wrote: > > This is something typically "fixed" by the assembly houses that know > which way the parts are on the tape and reel, but... > > PCB uses pin 1 (and sometimes pin 2) to determine the angle. IIRC there > are specs for how to determine angle too, but I don't remember what they > are. > IPC7351, page 16 It tries to specify what pin1 is and says pin1 should be to the top-left (compared to the ceontroid) at 0 degree rotation.
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