Re: Choosing Thermistor based on table - Marlin

Hi NoobMan, thanks! Nope, I don't have the equipment, but the tables are also good since they are measured by the reseller.

I re-read your reply about three times, but I am totally getting lost in the math. For things like mechanics, distances, sizes, volumes etc I am very good, but when it comes to 'low side' 'lullup' V*Rt ?? adc comparators I am completely losing track of what you are saying. Maybe it is because I am an art student trying to to math things.. And obviously we can't have it both ways ;) I can play you a song on the guitar, think of beautiful solutions for a logical problem, design you a chair or even a home, but more on a conceptual level...

Wish I was better at math.

The end of your reply makes sense though, the whole thing is that I really don't know how those numbers are made.

In my Marlin firmware it says this:

#define OVERSAMPLENR 16

I imagine this is the multiplier for the values in the left column, because:

const short temptable_1[][2] PROGMEM = {
{       23*OVERSAMPLENR ,       300     },
{       25*OVERSAMPLENR ,       295     },
{       27*OVERSAMPLENR ,       290     },
{       28*OVERSAMPLENR ,       285     },
{       31*OVERSAMPLENR ,       280     },
{       33*OVERSAMPLENR ,       275     },
{       35*OVERSAMPLENR ,       270     },
{       38*OVERSAMPLENR ,       265     },
{       41*OVERSAMPLENR ,       260     },
{       44*OVERSAMPLENR ,       255     },
{       48*OVERSAMPLENR ,       250     },

And so on.
But still, I am clueless and *afraid* to really make that step of creating my table. I really don't want to destroy anything.