How to adjust values to a new range

[amgen]

error posting

[Demon]

not to beat this up too much........

A horse is never too dead on the web.

... if you only need 135 output values, and you want to scale pot for 0 to 100%..... just use the top 8 bit from a/d and this trend line function that excel gave.

I can't believe I was playing with excel all that time and never thought of using the chart feature.

[Demon]

My ADC is only 10 bits, not 16.

So I just divide 10bits by 4 to reduce from 1023 down to 255, then slap it through your formula.

I haven't done any math yet (just thinking, while I work on my encoder logic), but this probably equates to what Ioannis is suggesting.

[amgen]

deleted because I realized the formula excel created was not correct...... me bad

[amgen]

ok, so the a/d has setting to shift bits so you can take the high byte only as the MSB, same as /4 ...... then the formula is (53 X reading)/100 + 100................ for ....0 to 255=100 to 235