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 <ric...@scalesweb.co.uk> >>>>>>>> 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 neonixie-l+...@googlegroups.com. >>>>>>>>> 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. 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