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not a so simple design ...
Hi, Steve
As a 0-100 scale is expected, ... RCTime function could do it.
Buuuut, the problem is light scale ... it's a logarithmic scale !!!
Sooo.... the input scale must be 0 - 10 000 !!! ( which is the A/D to use, Then ???? )
I think a design around a CA3089 ( or with log response: FM IF systems w/signal stenght indicator make good sonometers ...) could do it easily.
here, a modular 3 1/2 digit std voltmeter could be enough ... as the CA3161/3162 are ... out of my purse !!!
Alain
Last edited by Acetronics2; - 12th December 2006 at 08:37.
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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log scale? Could be. Use a VCA (SSM2164 & pals), set a fix voltage at the input, place the LDR at the voltage control... now it's close to be LOG scaled
OR Lookup tables OR some maths Or maybe there's some Log LDR?... I don't know and we don't have many parameter of this project so... HeeeeHaaa let's shed some tons of different ways
Last edited by mister_e; - 12th December 2006 at 15:02.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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