Any chance of relasing the drill and board outline files?

[plugwash]

As an add-on board designer i'd much preffer to know the EXACT positions of the holes rather than going on someone's attempts with a ruler.

[jbeale]

the exact mounting hole coordinates have already been posted.

Upcoming board revision

Two 2.5mm (drilled 2.9mm for M2.5 screw) non plated mounting holes have been provided to assist with ATE test mounting. Positions of these holes relative to the bottom left of the PCB (Power Input Corner) are:

Corner: 0.0mm,0.0mm
First Mount: 25.5mm,18.0mm
Second Mount: 80.1mm, 43.6mm

My two RPi boards, from different batches measure 84.99 x 56.00 mm and 84.99 x 55.93 mm so I think you can say they are "supposed" to be 85 x 56 mm but of course there is some variation due to router tool accuracy so you cannot count on a consistent size at the 10 micron level. I am using calipers, not a ruler.

[plugwash]

It wasn't so much the mounting holes I was thinking of as the vaious headers. IIRC we only have rough measurements of unknown provenence for the GPIO header and nothing at all for the JTAG header.

While I know the jtag header is of no use electrically it is potentially very useful from a mechnical mounting perspective, particually on rev 1 boards.

I could try to determine this myself but it's not easy to measure stuff accurately at this size.

[jbeale]

The drill file would be nice, but I think not entirely necessary.

I see the GPIO pin closest to the corner of the board (P1-02) as being centered 2.4 mm from the long side of the board, and 2.0 mm from the short side of the board (CF card side). I will quote my measurement tolerance at +/- 0.1 mm and I will suggest there is no point in having a higher-accuracy figure as the production tolerance on the board edges will probably not be much better than that.

The debug connector (is that P2) is harder to measure and I'll leave that one for someone else.

[jbeale]

Just as an addendum: although I measured my two R-Pi boards to both be 85.0 x 56.0 mm in size (to within several 10s of microns) the eLinux.org wiki at http://elinux.org/RPi_Hardware#Specifications claims the dimensions are 85.6 x 53.98 mm based on some artwork. I think my measurements are more likely true (well they ARE true for my particular boards) but it would be nice to have official confirmation.

[W. H. Heydt]

Well.... According to Wikipedia (which ought to be okay, as this is not a controversial subject), the ISO standard for a credit card, which has been stated as the size of the Pi PCB is 85.60 by 53.98 mm.

The article is here: http://en.wikipedia.org/wiki/ISO/IEC_7810

[jojopi]

The FAQ still claims the Pi boards are exactly credit card sized (85.60×53.98) too, although we knew in January they were 85×56: http://www.scribd.com/doc/77785093/Rasp ... Mechanical

The FAQ also claims that keyboards with built-in hubs, and four AA batteries "work well". And unlike the wiki, we can not fix it. (Apparently, nobody can fix it. Like the Raspite style sheet.)

[abishur]

Actually.... that's not strictly true. It may in fact be very possible to change the FAQ page. There would need to be consensus on what it should say about various issues though (such as the batteries thing)