- ... If I used an existing microcontroller that was
- programmed for a seven segment LED clock would the same
- firmware work for driving the 7 segment VFD tubes or are
- there timing issues that would be a problem? ...
- Robert W8UUU
Should still work. A couple of things to look out for:
(1)
- - colon separator. Eye tubes like an EM80 or EM84 ...
-
- You could also use a DM160 / 6977 (interchangable) or IV-15
- (different) for the colon. They're similar to eye tubes ...
Good point. I'm not familiar with the IV-15, but the DM160 also runs
on a 60V supply (max), so you'll only need one
- I'm not so sure about that. The electrons are only being
- pulled by a few dozen volts, so they're basically drifting
- along. You might get ghosting if you try to multiplex VFDs
- too fast with insufficient blanking periods. Certainly,
- they don't respond as fast as LEDs.
-
- John KG4L
You,
corrected email addr and web site:
sales at goldphoenixpcb.biz
http://www.goldphoenixpcb.biz/
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coggs bob.coggesh...@gmail.com wrote:
So what are Itead and seeedstudio in terms of $/sq in ?
If you can take optimal advantage of the 5x5cm 10pc deal, the price is
under .40 per sq inch.
But that's the best case scenario.
Dorkbot is closer to 1.66 square in. Which is still pretty good in
I have heard of http://www.pcbcart.com/, another pcb supplier settled in
China.
But I severely doubt that these cheap Chinese companies are interested
in any environmental protection... The quality of the PCBs is not too
bad, as I have heard, although I have never ordered from them.