Finding Arduino Pro Mini footprint

[dchisholm]

@jgalak

Be careful with Pro Minis, especially if you use SparkFun modules (or ones based on sparkfun). They aren’t an exact match to the reference standard, a few of the pins (the four that aren’t near the edge, iirc) aren’t the same.

From an old post at Arduino Blank Shield Available? :

@dchisholm

. . . the “Pro Mini” doesn’t seem to have standards for its mechanical interface, so you must lock in a particular vendor before you lay out a board. Some of this non-standardization is demonstrated at https://arduino-board.com/boards/arduino-pro-mini Notice that some vendors place various pins in different locations, and some of the pin groupings appear in a different order on various versions of the product. One thing that isn’t obvious in the photos on that web page: some of the pad locations are NOT on the 50-mil (1.27 mm) grid that seems to govern the other pin placements. (They’re about 10 mils (0.25 mm) off the grid.) To aggravate the problem, it’s difficult to find diagrams that actually define the pin locations for any of the variants - the best I found is at http://img.alibaba.com/img/pb/053/955/500/500955053_563.jpg

Click the first link in the above quote & look at the pictures! Even Sparkfun seems to have produced two variations of the Pro Mini!

@jgalak

. . . I know I recently found a KiCad library that had both standard and sparkfun Pro Mini footprints and symbols, but can’t recall where . . . .

Perhaps the attachments to Help with importing arduino pro mini . . . ??

Dale