On 09.11.13 12:14, andy pugh wrote: > On 9 November 2013 11:54, Erik Christiansen <dva...@internode.on.net> wrote: > > > Fortunately the temperature in a reflow oven needn't be regulated to > > within one degree, AIUI, because the A/D converter on an AVR (Arduino) > > or any other 8 bit MCU that I've come across is only 8 bits, minus > > offset and gain errors, unless you take the trouble to correct for them. > > The Arduino Analogue inputs are 10 bits.
Rats, you're right. I've mentally derated them twice. When you look at the AVR datasheets¹, the 10 bits becomes about 8 bits after offset, linearity, and gain errors are deducted. So even "as is", they'd be fine for the application. And with offset and gain corrections, either analogue or in firmware, I'd just about give credence to 10 bits if you took a bunch of measurements and averaged them. Maybe I shouldn't rely on memory late at night. Erik ¹ Unfortunately, it's some time since I last did. -- Don't believe everything you hear, or anything you say. ------------------------------------------------------------------------------ November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
