On Jul 18, 3:44 pm, "MrNixie (UK)" <[email protected]> wrote: > Hmm - I might have just made an expensive mistake (or just be unlucky > so far). > > Has anyone bought any of the exquisite-looking huge 7 x 9 dot matrix > display off ebay?
Yes, unfortunately. > I can't get them to run correctly. On closer inspection, they strike > me as mis-manufactured items, all with the same bizarre fault (problem > with the assembly machine?) Several of the grids do not appear to be > connected to the external pins. Those grids which are connected appear > to be shorted together. Under a lens, this is clear to see. > > Anyone else had any experience? Yup. I don't know why they were intentionally built that way, but there is no control over the individual elements. The best you can do is get one whole column to light up. I contacted the seller and asked (repeatedly), but never got a response. Note that his eBay listing (see another post in this thread) shows two different types of packages - the headline picture appears to be of blister-faced (for lack of a better term) units, while the pictures inside the listing are of flat-faced ones. The giant 7-segment tubes he (and other sellers) have listed are blister-faced units. Also, the only picture he has of a lit display are from the specimen I gave to VTA: http://www.decadecounter.com/vta/articleview.php?item=1033 -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
