Layout: Standard distance between D7 & D8 pin

Projects General Guidance
1

Hi,

I 'm looking for the "Arduino" standard on pin spacing. I saw this thread http://arduino.cc/forum/index.php/topic,22831.0.html but no conclusion is derived in this thread.
So, is there a "standard" on distance between pin D7 and D8 from Arduino team?

Thanks

2

Hi Richard,

The accidental factor could be true. I go ahead and use 155 mils but would still like to invite comments from the core team.
I also don't understand the significance of the Arduino footprint with a jagged right edge; It decreases the yield of the PCB.

Thanks 'n' 73s,

Chetan Bhargava

3

I just downloaded the Ladyada's eagle library. There are three footprints for Arduino shield, all measure 160 mil between D7 and D8.

4

I downloaded Duemilanove and Uno ref designs and found the following:

  1. Duemilanove Ref Design - 160 mil
  2. Uno Ref Design - 160 mil
  3. Ladyada library - 160 mil
  4. Sparkfun Library - 150 mil

Chetan