Is there a more efficient way?

[mister_e]

the use of LOOKUP, READ will be easier and faster... some home work to do but ... just an idea

[Acetronics2]

Hi, Mark edwards

Considering the thermistor's value tolerance ( generally +/- 20%, 10% in the best cases ) , plus it's precision, linearity, and repeatability ...

on that a small range , a simple y = ax + b linéarisation will give a widely credible result !!!

Alain

[Melanie]

I disagree. Banks of IF statements are real ugly and there are more elegant ways of doing the same thing, but those heaps of IF statements invariably outperform the more elegant solutions.

There is room for improvement, not in performance as in speed per se, but in resolution. You could almost interpolate steps of about a quarter of a degree (or better)... look...

if AD0 >= 446 then RA = 67
if AD0 >= 450 then RA = 68

You've got about four clicks or more...

if AD0 >= 535 then RA = 82
if AD0 >= 544 then RA = 83

between adjacent degrees... you have enough data to increase your resolution to beyond 1F. No, not with banks of IF statements this time, you need to be a little more creative with the math. If you can't figure it, come back and I'll show you how.

[Acetronics2]

Hi, Mel

I Agree for the ( basic ...) maths.

As no sensor calibration is evoked ... the result could be, i.e.

70°F +/- 10°F ... ( remember the thermistor nominal value tolerance !!! )

what is the sense of the 1/4°F here ...

Ah, Yesssss, I see ... a smart looking gadget !!!

Not so easy, the precise measurements .... don't you think???

Alain

[Melanie]

As long as it looks good and appears to function...

More than half the stuff you see for sale is total rubbish... however the secret of success is being fastest to market with your particular piece of land-fill...

[mister_e]

And now i agree

Many people think that because it's electronic it's more accurate ... well sometime !!!

[NavMicroSystems]

...Many people think that because it's electronic it's more accurate ...

...and the more decimals there are on the display the better it is...