Digital potentiometer and a 3 digit display


2012-02-10 12:12 pm
Hi folks!

I'm thinking of making a low power amplifier and I've realized I have
an old satellite receiver enclosure that I'd like to put to good use.
The front side has two pushbuttons (up,down) and an On/Off switch.
I would really like to reuse the switches for volume control and there
came an idea to implement a digital pot like DS 1802. This product
is the closest thing to ideal in my view, only thing I don't know is how to
to wire it to a 3 digit 7 segment display and program it to display
sound level corresponding to its setting. Pot has 65 positions and I
was hoping the display would show 0,-1,-2......-64 and the last mute.

I have nothing against learning a simple enough language if I really
have no other choice but to burn a chip myself.

Thank you!
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2012-02-10 12:12 pm
So far I have found out that one of the ways to control a seven segment
led display is to program a microcontroller, for example an 8051 which
means that one would have to have some clue about programming and
the book that covers basics and more than that costs about 80 bucks.
Perfect, in a year or two or a decade i'll be able to lit the thing myself
and I'll come back here and explain it all to you, maybe. Super! :c_flag:


2012-02-10 12:12 pm
Thanks guys. The very idea of programming chips or anything
connected with it is terra nuova for me so forgive me for being
slow about it. Yesterday I found out about arduino things for the
first time.

I was browsing Elektor web and I ran into multiple possibilities.
A bit overwhelming for now. I ought to find a source of information
that would describe things in a logical way so I can figure out for myself
how to or whether or not to proceed. I'm too old to waste my time on
something that may turn out not to be worth the trouble at all. We'll see,
said the blindmen.