FreeCalypso > hg > freecalypso-reveng
changeset 58:d05b2e790e6b
Pirelli PCB: some measurements of the debug connector footprint
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
---|---|
date | Wed, 13 Nov 2013 21:00:30 +0000 |
parents | 277fd7b971f0 |
children | 3f38da3933c2 |
files | pirelli/debug pirelli/scale |
diffstat | 2 files changed, 28 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/pirelli/debug Wed Nov 13 21:00:30 2013 +0000 @@ -0,0 +1,15 @@ +Debug connector footprint on the side next to the display + +centre of the leftmost pad: (2670,2206) +centre of the rightmost pad: (3011,2206) + +distance in pixels: 341 +pitch in pixels: 31 (341/11) + +assumed physical pitch: 0.5 mm +length of the pads: a little longer than 1 mm + +The two larger (mounting?) pads appear to be 2x2 mm square. +They sit about 1.5 mm south of the signal pad centreline. +Horiz distance between centre of each outermost signal pad +and the nearby mounting pad: 140 pixels, or a little over 2 mm.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/pirelli/scale Wed Nov 13 21:00:30 2013 +0000 @@ -0,0 +1,13 @@ +Seeking to establish the scale between pixels and mm +Measuring the S71PL129NC0 footprint on L8 + +4 corner balls of this fp: + + (4698,443) (5250,443) + + (4697,893) (5249,895) + +rounding width to 552 pixels, height to 450 pixels +the actual dimensions are supposed to be 8.80x7.20 mm + +estimating somewhere between 62.5 and 62.8 pixels per mm