After much cross checking between digits I have now settled on what I believe the final measurements are and this is the result:
[image: crosscheck.JPG] The left half will sit right on top of the right half so there is x & y consistency between the two characters, the risk of the part fitting is tending away from zero! - Richard On Monday, 6 November 2023 at 04:33:39 UTC Richard Scales wrote: > Many thanks again, > @Christian - that is a sound plan, will do/ > > @Gregbert - noted though I never solder these things in, I make sockets > for them every time which makes insertion/removal and replacement > relatively easy. I purchase 40 way turned pin sockets and break the pin > sockets out of them to fit into the right sized hole on the PCB and I > always make an oversized hole for the 'glasshole'. > > I've already made footprints for many different displays including SP-33x, > SP-35x, SP-101 and SP-151 - made as sockets. > > > [image: QQPic.JPG] > > This is the display board for a different clock that uses SP-332 displays. > > - Richard > > > On Sunday, 5 November 2023 at 23:06:21 UTC gregebert wrote: > >> Make sure the holes for the display pins are larger than minimum; I made >> my own footprint for the SP-151 and it was difficult to get the pins fully >> aligned when trying to solder it in. Larger holes makes it much easier to >> insert the display for soldering. >> >> Also beware of the *glasshole*, as I call it. It's the fill-tip when the >> display gets gassed-up, and you need to make the PCB hole large enough to >> accommodate slight manufacturing variances in diameter and location. I >> think I used a 5mm hole, and keep traces spaced away as much as possible in >> case you need to make the hole larger. I didn't have any glasshole >> problems on my boards. >> >> On Sunday, November 5, 2023 at 9:35:11 AM UTC-8 Christian Riise Wagner >> wrote: >> >>> Can't help you with better drawings, but I can recommend 3D-printing a >>> small piece with the holes at the planned locations to verify the fit >>> before sending off the board for production. I've used this technique >>> myself a couple of times. >>> søndag den 5. november 2023 kl. 16.12.59 UTC+1 skrev Dekatron42: >>> >>>> Have you asked Dieter if he has a better scan that he can share? >>>> >>>> /Martin >>>> >>>> On Sunday, 5 November 2023 at 05:30:53 UTC+1 Richard Scales wrote: >>>> >>>>> Thank you Benoit but I need actual data to make a footprint to use in >>>>> PCB design application. >>>>> >>>>> I think I'm mostly there but was really seeking a better picture so I >>>>> can confirm the accuracy of the supplied numbers and to which pins they >>>>> apply - some of the ones buried in the centre of the display are not so >>>>> clearly linked to the numbers at the side. >>>>> - Richard >>>>> >>>>> >>>>> On Saturday, 4 November 2023 at 14:37:27 UTC Benoit Tourret wrote: >>>>> >>>>>> try to find 0.5 mm inner diameter pipe, 10cm long, fit all the pins, >>>>>> pour some silicone, you should have a good representation of the >>>>>> socket... >>>>>> if you didn't forgot to add some wax or similar to unmold the silicon. >>>>>> the more parallel your pipes will be, the more accurate your print >>>>>> will be. >>>>>> for a good print, the end of the pins is not important, the most >>>>>> important is the place they have at the beginning, the nearest to the >>>>>> display. without sacrifying a display; I don't see any other way to have >>>>>> a >>>>>> good measurement. >>>>>> >>>>>> Le samedi 4 novembre 2023 à 10:04:19 UTC+1, Richard Scales a écrit : >>>>>> >>>>>>> Hello, there are indeed a few the line up - it's the ones that don't >>>>>>> that worry me the most! >>>>>>> - RIchard >>>>>>> >>>>>>> >>>>>>> On Saturday, 4 November 2023 at 08:54:44 UTC Benoit Tourret wrote: >>>>>>> >>>>>>>> Hello Richard, >>>>>>>> >>>>>>>> have a look on the SP-351, >>>>>>>> >>>>>>>> https://www.tube-tester.com/sites/nixie/data/datasheets/SP-351_SP-352-drawing-01.jpg >>>>>>>> [image: SP-351_SP-352-drawing-01.jpg] >>>>>>>> not the same number of digit, but some of the pins should be >>>>>>>> identical... >>>>>>>> On my SP-356, there is 0 aligned pins on a diagonal way. only in >>>>>>>> horizontal. >>>>>>>> >>>>>>>> Le samedi 4 novembre 2023 à 07:31:29 UTC+1, Richard Scales a écrit : >>>>>>>> >>>>>>>>> I used to so that but it relies on all the pins being straight and >>>>>>>>> for this particular display - there are 30+ pins in a very small >>>>>>>>> space - >>>>>>>>> the more accurate the better - especially when it finally comes to >>>>>>>>> plugging >>>>>>>>> the things in! >>>>>>>>> [image: TTPicture.JPG][image: PPpicture.JPG] >>>>>>>>> >>>>>>>>> Perhaps the differences are so subtle it's not worth worrying >>>>>>>>> about. It's like staring at constellations! This group on the left >>>>>>>>> seems a >>>>>>>>> little out of alignment when compared with the image from Sperry, >>>>>>>>> it's >>>>>>>>> counterpart in the image for the character on the right looks more >>>>>>>>> like my >>>>>>>>> chart - yet - from the data I have logged - the chart shows similar >>>>>>>>> groupings for left and right - is their image wrong ? is their data >>>>>>>>> wrong? >>>>>>>>> >>>>>>>>> [image: DDpicture.JPG] >>>>>>>>> >>>>>>>>> When daylight comes I'll get eyes on the physical display though I >>>>>>>>> fear at my age - that may be the least helpful method! >>>>>>>>> >>>>>>>>> - Richard >>>>>>>>> >>>>>>>>> On Saturday, 4 November 2023 at 06:09:25 UTC Audrey wrote: >>>>>>>>> >>>>>>>>>> You could scan the bottom of one using a scanner and convert to >>>>>>>>>> inches/mm using the DPI. >>>>>>>>>> >>>>>>>>>> On Sat, Nov 4, 2023, 2:04 AM Richard Scales < >>>>>>>>>> [email protected]> wrote: >>>>>>>>>> >>>>>>>>>>> I'm looking for any details of the pinout of the Sperry / >>>>>>>>>>> Beckman SP-252 Multi Segment display which are any better than the >>>>>>>>>>> one that >>>>>>>>>>> I found over at tube-tester.com: >>>>>>>>>>> https://tube-tester.com/sites/nixie/data/SP-252/sp-252.htm >>>>>>>>>>> >>>>>>>>>>> I'm making a footprint and need to get the pin positions as >>>>>>>>>>> accurate as possible. My usual process for this is to copy the pin >>>>>>>>>>> positions into a spreadsheet and make a scattergram which should >>>>>>>>>>> represent >>>>>>>>>>> the pin positions. >>>>>>>>>>> >>>>>>>>>>> This allows me to spot any obvious blunders. It's just that the >>>>>>>>>>> image I have is not that clear and there is some information >>>>>>>>>>> missing (IMHO) >>>>>>>>>>> so if anyone can point me to anything better I would be most >>>>>>>>>>> grateful. >>>>>>>>>>> >>>>>>>>>>> I could not find it in the Sperry Information Systems catalogue >>>>>>>>>>> for which I already have a PDF. >>>>>>>>>>> - Richard >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>>> Google Groups "neonixie-l" group. >>>>>>>>>>> To unsubscribe from this group and stop receiving emails from >>>>>>>>>>> it, send an email to [email protected]. >>>>>>>>>>> To view this discussion on the web, visit >>>>>>>>>>> https://groups.google.com/d/msgid/neonixie-l/171bf56b-7195-454e-8ebb-2ef9aceb2e78n%40googlegroups.com >>>>>>>>>>> >>>>>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/171bf56b-7195-454e-8ebb-2ef9aceb2e78n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>>>>>> . >>>>>>>>>>> >>>>>>>>>> -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/b00a8edb-1595-4945-ac8a-7bd6592a9f9an%40googlegroups.com.
