--- In email@example.com
, "Brett Paulin" <yahoogroups@...>
> Hi Guys,
> I"ve been lurking on here for a while, keeping an eye out for some
> tubes to have a play with some smart sockets, when I had an idea
> How about using 15 x in-13 (Bargraph) tubes arranged in the same
way as a
> B7971 ?
> It would take a little work to mount them, and possibly require
> mods to to the cathode drivers, but you would end up with a pesudo-
> 200mm tall !
> With a little more mods to the drivers, you could use some op-amps
> RC-constant and PWM the outputs to control the "legnth" of the
> give you a whole new range of fade-in/out effects.
> You can get Nixie Bargraphs for about $2-$3 each, so each digit
> out to be about $35 (US). Cheaper than B7971's and much bigger.
> Anyone see any problems before I push the button on a supplier of
> found ?
> How much is a smart-socket kit again for me to start tinkering with
> Regards (and Greetings/Introductions :-)
> Brett Paulin
Hello Brett, not a bad idea.
The sockets kits have yet to be priced, but I have some assembled for
£15.35 complete, or £14.25 without pin receptacles to hold the tube
pins. Bare PCBs with a controller IC are £7.
now to your idea, I'm guessing from the price that you are not
interested in using the underscore character. in that case the pin
which normally drives the underscore could become a PWM output for
effects, just like you say !
In the files section is a video 'david.avi' which sows some large LED
displays I made from taped reel leds which I just thumbtacked through
the tape to a board to hold the segment strips in place, I could see
your idea looking something like that. nice and large is good !
One of this group's members made a word sculpture, which has a 4-
letter space in a familiar looking sentence. Passers-by got to change
the 4 letter word to something they would rateh see in the space, in
the sentence ' I ++++ YOU '
I wondered if a display ni ashop window which passers-by could send
text messages to as they passed would be interesting. For that you
would need large displays of the sort of size you're talking about
and an old Nokia phone is virtually free and could receive texts at
no cost as far as I know !