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 < >>>>>>>>> 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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