smoothing pot input

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googling arund found smoothing algorithm. seems simple, follow how work.
code: [select]

// declared globally
float smoothadc;

// inside loop() or other repeating function
smoothadc = 0.9 * smoothadc + 0.1 * analogread(0);


make sense anyone?

no, makes no sense written. sure nothing omitted? code uses uninitialized variable, can never ever work. 


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