On Mar 26, 10:18 am, Cobra007 <[email protected]> wrote: > Let's see who will win the race to make the first clock with these > tubes :-). > > I still wonder how it will scan a character, do you set the "X-Y" > voltages for the character and then perform a scan of the character, > or do you scan a series of characters slice by slice? If you want your > signal to be compatible for a PAL TV, I think you have to scan a row > of characters slice by slice, but that would make it more complicated > than scanning character by character.
Many of these tubes don't have alphanumerics - they have test cards or airfield overlays etc. Using one that does have numeric capability to create a clock display on another CRT is just making life hard - to be a valid exercise it'll have to be non-digital as using a uP, it would be quite simple to implement but begs the question "Why?" - if you are using a uP, then the character generation is is slightly academic (though you can use the sine/cosine route some have used). So, to be a valid exercise it should be completely analogue, and then preferably hollow-state. However, if I ever get round to it (unlikely) I'd go down the uP route... Nick -- 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.
