In a message dated 12/27/01 11:35:11 AM Eastern Standard Time,
erd_6502_at_yahoo.com writes:
> I found that. More than once. That's for an LED bargraph. I'm
> looking for a circuit that operates an old-fashioned galvanometer-
> style panel meter with a needle that swings from side-to-side.
>
> I can invent my own - a simple ladder D-to-A to produce a variable
> voltage out of the parallel port. I was hoping to save the math
> and use resistor values that someone else has calculated, but after
> two days of searching, I guess I _will_ have to go do it myself.
>
> Somewhere in my junk boxes, I have some .5" tall by 1.5" wide signal
> meters that I think I pulled from a dead CB radio, c. 1978 (pre-40-
> channel). The plane of the needle swing is parallel to the floor,
> and the needle has a 90-degree bend at the end, so you see a .2"
> tall vertical line slide from left to right as the signal improves.
> If I can find it, it'll mount perfectly in a 3.5" blank faceplace.
>
> Now to excavate the old parts!
>
> -ethan
>
>
Well, please let us know if and how you get this working. I would love to
have something like this as well!
-Linc.
In The Beginning there was nothing, which exploded - Yeah right...
Calculating in binary code is as easy as 01,10,11.
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Received on Thu Dec 27 2001 - 10:56:45 GMT