- Sun Aug 14, 2011 5:24 pm
#131813
Considering we'll be using these, I thought I'd make some Eagle parts for the Circular LED Bargraph that SparkFun now carries (1). Only later did I think to check the SparkFun Eagle library (2), which already has it. Go figure.
On the up side, the library I put together contains parts for all of the variants that Top-Up Industry Corp carries(3), adds component restrictions(4) and some alignment hole-less variants(5) and I think has the correct pad layout (6) .. and a more symmetrical schematic (7)
1) http://www.sparkfun.com/products/10595
2) http://www.opencircuits.com/SFE_Footprint_Library_Eagle
3) http://top-up.so-buy.com/front/bin/cgli ... ory=325007
4) For those using component placement, the LED-CCL-A is a fairly big package with plenty of area where you can't place anything else on the top, and of course on the bottom if you use the alignment tabs and implied holes.
5) The alignment holes are for very stringent placement requirements. If you won't be using them, no need to have the (auto)router work around those holes. Hence the inclusion of hole-less versions.
6) As anybody making packages will tell you, going by the manufacturer's datasheet alone is not enough. You really should test against the actual product. While I haven't done so, I did notice a discrepancy between the various variations; in LED-CCL-A, one part (bottom center) of the diagram states the 'vertical' distance between pins as 25.5mm, while another part (top left) states 26.4mm. In the datasheets for LED-CCL-AB, LED-CCL-M and LED-CCL-MB, the bottom-center diagram does also state 26.4mm. Given the 'horizontal' distance is 26.4mm, this seemed like the appropriate value. If you inspect the SparkFun package, the inner pins are slightly inside of the physical (plastic) package, rather than slightly outside. The difference 0.9mm makes. This probably doesn't matter in practice as the drill holes for the pins are 1.2mm diameter. It's still a good idea to inspect datasheets even across variations, however, as the *B variant has a very slightly smaller inner diameter.
7) Arraying elements in Eagle is hard. Go ULP!
Of course it's entirely possible I did mess something up. If so, point it out and I'll fix it.
2011/08/17: LED-CCL-MB had incorrect label in package.
On the up side, the library I put together contains parts for all of the variants that Top-Up Industry Corp carries(3), adds component restrictions(4) and some alignment hole-less variants(5) and I think has the correct pad layout (6) .. and a more symmetrical schematic (7)
1) http://www.sparkfun.com/products/105952) http://www.opencircuits.com/SFE_Footprint_Library_Eagle
3) http://top-up.so-buy.com/front/bin/cgli ... ory=325007
4) For those using component placement, the LED-CCL-A is a fairly big package with plenty of area where you can't place anything else on the top, and of course on the bottom if you use the alignment tabs and implied holes.
5) The alignment holes are for very stringent placement requirements. If you won't be using them, no need to have the (auto)router work around those holes. Hence the inclusion of hole-less versions.
6) As anybody making packages will tell you, going by the manufacturer's datasheet alone is not enough. You really should test against the actual product. While I haven't done so, I did notice a discrepancy between the various variations; in LED-CCL-A, one part (bottom center) of the diagram states the 'vertical' distance between pins as 25.5mm, while another part (top left) states 26.4mm. In the datasheets for LED-CCL-AB, LED-CCL-M and LED-CCL-MB, the bottom-center diagram does also state 26.4mm. Given the 'horizontal' distance is 26.4mm, this seemed like the appropriate value. If you inspect the SparkFun package, the inner pins are slightly inside of the physical (plastic) package, rather than slightly outside. The difference 0.9mm makes. This probably doesn't matter in practice as the drill holes for the pins are 1.2mm diameter. It's still a good idea to inspect datasheets even across variations, however, as the *B variant has a very slightly smaller inner diameter.
7) Arraying elements in Eagle is hard. Go ULP!
Of course it's entirely possible I did mess something up. If so, point it out and I'll fix it.
2011/08/17: LED-CCL-MB had incorrect label in package.
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